﻿<?xml version="1.0" encoding="UTF-8"?>
<Portfolio>
  <Name>DRS - BLOOMBERG ROLL SELECT INDEX FUTURE</Name>
  <Categories>
    <PortfolioCategory>
      <Name>Year 2016</Name>
      <Symbols>
        <PortfolioSymbol>
          <Name>DRSH16</Name>
          <Description>BLOOMBERG ROLL SELECT INDEX FUTURE MAR 2016</Description>
          <Decimals>2</Decimals>
          <PipSize>2</PipSize>
          <PipFraction>2</PipFraction>
          <TickSize>0.1</TickSize>
        </PortfolioSymbol>
        <PortfolioSymbol>
          <Name>DRSM16</Name>
          <Description>BLOOMBERG ROLL SELECT INDEX FUTURE JUN 2016</Description>
          <Decimals>2</Decimals>
          <PipSize>2</PipSize>
          <PipFraction>2</PipFraction>
          <TickSize>0.1</TickSize>
        </PortfolioSymbol>
        <PortfolioSymbol>
          <Name>DRSU16</Name>
          <Description>BLOOMBERG ROLL SELECT INDEX FUTURE SEP 2016</Description>
          <Decimals>2</Decimals>
          <PipSize>2</PipSize>
          <PipFraction>2</PipFraction>
          <TickSize>0.1</TickSize>
        </PortfolioSymbol>
        <PortfolioSymbol>
          <Name>DRSZ16</Name>
          <Description>BLOOMBERG ROLL SELECT INDEX FUTURE DEC 2016</Description>
          <Decimals>2</Decimals>
          <PipSize>2</PipSize>
          <PipFraction>2</PipFraction>
          <TickSize>0.1</TickSize>
        </PortfolioSymbol>
      </Symbols>
    </PortfolioCategory>
    <PortfolioCategory>
      <Name>Year 2017</Name>
      <Symbols>
        <PortfolioSymbol>
          <Name>DRSH17</Name>
          <Description>BLOOMBERG ROLL SELECT INDEX FUTURE MAR 2017</Description>
          <Decimals>2</Decimals>
          <PipSize>2</PipSize>
          <PipFraction>2</PipFraction>
          <TickSize>0.1</TickSize>
        </PortfolioSymbol>
        <PortfolioSymbol>
          <Name>DRSM17</Name>
          <Description>BLOOMBERG ROLL SELECT INDEX FUTURE JUN 2017</Description>
          <Decimals>2</Decimals>
          <PipSize>2</PipSize>
          <PipFraction>2</PipFraction>
          <TickSize>0.1</TickSize>
        </PortfolioSymbol>
        <PortfolioSymbol>
          <Name>DRSU17</Name>
          <Description>BLOOMBERG ROLL SELECT INDEX FUTURE SEP 2017</Description>
          <Decimals>2</Decimals>
          <PipSize>2</PipSize>
          <PipFraction>2</PipFraction>
          <TickSize>0.1</TickSize>
        </PortfolioSymbol>
        <PortfolioSymbol>
          <Name>DRSZ17</Name>
          <Description>BLOOMBERG ROLL SELECT INDEX FUTURE DEC 2017</Description>
          <Decimals>2</Decimals>
          <PipSize>2</PipSize>
          <PipFraction>2</PipFraction>
          <TickSize>0.1</TickSize>
        </PortfolioSymbol>
      </Symbols>
    </PortfolioCategory>
    <PortfolioCategory>
      <Name>Year 2018</Name>
      <Symbols>
        <PortfolioSymbol>
          <Name>DRSH18</Name>
          <Description>BLOOMBERG ROLL SELECT INDEX FUTURE MAR 2018</Description>
          <Decimals>2</Decimals>
          <PipSize>2</PipSize>
          <PipFraction>2</PipFraction>
          <TickSize>0.1</TickSize>
        </PortfolioSymbol>
        <PortfolioSymbol>
          <Name>DRSM18</Name>
          <Description>BLOOMBERG ROLL SELECT INDEX FUTURE JUN 2018</Description>
          <Decimals>2</Decimals>
          <PipSize>2</PipSize>
          <PipFraction>2</PipFraction>
          <TickSize>0.1</TickSize>
        </PortfolioSymbol>
        <PortfolioSymbol>
          <Name>DRSU18</Name>
          <Description>BLOOMBERG ROLL SELECT INDEX FUTURE SEP 2018</Description>
          <Decimals>2</Decimals>
          <PipSize>2</PipSize>
          <PipFraction>2</PipFraction>
          <TickSize>0.1</TickSize>
        </PortfolioSymbol>
        <PortfolioSymbol>
          <Name>DRSZ18</Name>
          <Description>BLOOMBERG ROLL SELECT INDEX FUTURE DEC 2018</Description>
          <Decimals>2</Decimals>
          <PipSize>2</PipSize>
          <PipFraction>2</PipFraction>
          <TickSize>0.1</TickSize>
        </PortfolioSymbol>
      </Symbols>
    </PortfolioCategory>
    <PortfolioCategory>
      <Name>Year 2019</Name>
      <Symbols>
        <PortfolioSymbol>
          <Name>DRSH19</Name>
          <Description>BLOOMBERG ROLL SELECT INDEX FUTURE MAR 2019</Description>
          <Decimals>2</Decimals>
          <PipSize>2</PipSize>
          <PipFraction>2</PipFraction>
          <TickSize>0.1</TickSize>
        </PortfolioSymbol>
        <PortfolioSymbol>
          <Name>DRSM19</Name>
          <Description>BLOOMBERG ROLL SELECT INDEX FUTURE JUN 2019</Description>
          <Decimals>2</Decimals>
          <PipSize>2</PipSize>
          <PipFraction>2</PipFraction>
          <TickSize>0.1</TickSize>
        </PortfolioSymbol>
        <PortfolioSymbol>
          <Name>DRSU19</Name>
          <Description>BLOOMBERG ROLL SELECT INDEX FUTURE SEP 2019</Description>
          <Decimals>2</Decimals>
          <PipSize>2</PipSize>
          <PipFraction>2</PipFraction>
          <TickSize>0.1</TickSize>
        </PortfolioSymbol>
        <PortfolioSymbol>
          <Name>DRSZ19</Name>
          <Description>BLOOMBERG ROLL SELECT INDEX FUTURE DEC 2019</Description>
          <Decimals>2</Decimals>
          <PipSize>2</PipSize>
          <PipFraction>2</PipFraction>
          <TickSize>0.1</TickSize>
        </PortfolioSymbol>
      </Symbols>
    </PortfolioCategory>
    <PortfolioCategory>
      <Name>Year 2020</Name>
      <Symbols>
        <PortfolioSymbol>
          <Name>DRSH20</Name>
          <Description>BLOOMBERG ROLL SELECT INDEX FUTURE MAR 2020</Description>
          <Decimals>2</Decimals>
          <PipSize>2</PipSize>
          <PipFraction>2</PipFraction>
          <TickSize>0.1</TickSize>
        </PortfolioSymbol>
        <PortfolioSymbol>
          <Name>DRSM20</Name>
          <Description>BLOOMBERG ROLL SELECT INDEX FUTURE JUN 2020</Description>
          <Decimals>2</Decimals>
          <PipSize>2</PipSize>
          <PipFraction>2</PipFraction>
          <TickSize>0.1</TickSize>
        </PortfolioSymbol>
        <PortfolioSymbol>
          <Name>DRSU20</Name>
          <Description>BLOOMBERG ROLL SELECT INDEX FUTURE SEP 2020</Description>
          <Decimals>2</Decimals>
          <PipSize>2</PipSize>
          <PipFraction>2</PipFraction>
          <TickSize>0.1</TickSize>
        </PortfolioSymbol>
        <PortfolioSymbol>
          <Name>DRSZ20</Name>
          <Description>BLOOMBERG ROLL SELECT INDEX FUTURE DEC 2020</Description>
          <Decimals>2</Decimals>
          <PipSize>2</PipSize>
          <PipFraction>2</PipFraction>
          <TickSize>0.1</TickSize>
        </PortfolioSymbol>
      </Symbols>
    </PortfolioCategory>
    <PortfolioCategory>
      <Name>Year 2021</Name>
      <Symbols>
        <PortfolioSymbol>
          <Name>DRSH21</Name>
          <Description>BLOOMBERG ROLL SELECT INDEX FUTURE MAR 2021</Description>
          <Decimals>2</Decimals>
          <PipSize>2</PipSize>
          <PipFraction>2</PipFraction>
          <TickSize>0.1</TickSize>
        </PortfolioSymbol>
        <PortfolioSymbol>
          <Name>DRSM21</Name>
          <Description>BLOOMBERG ROLL SELECT INDEX FUTURE JUN 2021</Description>
          <Decimals>2</Decimals>
          <PipSize>2</PipSize>
          <PipFraction>2</PipFraction>
          <TickSize>0.1</TickSize>
        </PortfolioSymbol>
        <PortfolioSymbol>
          <Name>DRSU21</Name>
          <Description>BLOOMBERG ROLL SELECT INDEX FUTURE SEP 2021</Description>
          <Decimals>2</Decimals>
          <PipSize>2</PipSize>
          <PipFraction>2</PipFraction>
          <TickSize>0.1</TickSize>
        </PortfolioSymbol>
        <PortfolioSymbol>
          <Name>DRSZ21</Name>
          <Description>BLOOMBERG ROLL SELECT INDEX FUTURE DEC 2021</Description>
          <Decimals>2</Decimals>
          <PipSize>2</PipSize>
          <PipFraction>2</PipFraction>
          <TickSize>0.1</TickSize>
        </PortfolioSymbol>
      </Symbols>
    </PortfolioCategory>
    <PortfolioCategory>
      <Name>Year 2022</Name>
      <Symbols>
        <PortfolioSymbol>
          <Name>DRSH22</Name>
          <Description>BLOOMBERG ROLL SELECT INDEX FUTURE MAR 2022</Description>
          <Decimals>2</Decimals>
          <PipSize>2</PipSize>
          <PipFraction>2</PipFraction>
          <TickSize>0.1</TickSize>
        </PortfolioSymbol>
        <PortfolioSymbol>
          <Name>DRSM22</Name>
          <Description>BLOOMBERG ROLL SELECT INDEX FUTURE JUN 2022</Description>
          <Decimals>2</Decimals>
          <PipSize>2</PipSize>
          <PipFraction>2</PipFraction>
          <TickSize>0.1</TickSize>
        </PortfolioSymbol>
        <PortfolioSymbol>
          <Name>DRSU22</Name>
          <Description>BLOOMBERG ROLL SELECT INDEX FUTURE SEP 2022</Description>
          <Decimals>2</Decimals>
          <PipSize>2</PipSize>
          <PipFraction>2</PipFraction>
          <TickSize>0.1</TickSize>
        </PortfolioSymbol>
        <PortfolioSymbol>
          <Name>DRSZ22</Name>
          <Description>BLOOMBERG ROLL SELECT INDEX FUTURE DEC 2022</Description>
          <Decimals>2</Decimals>
          <PipSize>2</PipSize>
          <PipFraction>2</PipFraction>
          <TickSize>0.1</TickSize>
        </PortfolioSymbol>
      </Symbols>
    </PortfolioCategory>
    <PortfolioCategory>
      <Name>Year 2023</Name>
      <Symbols>
        <PortfolioSymbol>
          <Name>DRSH23</Name>
          <Description>BLOOMBERG ROLL SELECT INDEX FUTURE MAR 2023</Description>
          <Decimals>2</Decimals>
          <PipSize>2</PipSize>
          <PipFraction>2</PipFraction>
          <TickSize>0.1</TickSize>
        </PortfolioSymbol>
        <PortfolioSymbol>
          <Name>DRSM23</Name>
          <Description>BLOOMBERG ROLL SELECT INDEX FUTURE JUN 2023</Description>
          <Decimals>2</Decimals>
          <PipSize>2</PipSize>
          <PipFraction>2</PipFraction>
          <TickSize>0.1</TickSize>
        </PortfolioSymbol>
        <PortfolioSymbol>
          <Name>DRSU23</Name>
          <Description>BLOOMBERG ROLL SELECT INDEX FUTURE SEP 2023</Description>
          <Decimals>2</Decimals>
          <PipSize>2</PipSize>
          <PipFraction>2</PipFraction>
          <TickSize>0.1</TickSize>
        </PortfolioSymbol>
        <PortfolioSymbol>
          <Name>DRSZ23</Name>
          <Description>BLOOMBERG ROLL SELECT INDEX FUTURE DEC 2023</Description>
          <Decimals>2</Decimals>
          <PipSize>2</PipSize>
          <PipFraction>2</PipFraction>
          <TickSize>0.1</TickSize>
        </PortfolioSymbol>
      </Symbols>
    </PortfolioCategory>
    <PortfolioCategory>
      <Name>Year 2024</Name>
      <Symbols>
        <PortfolioSymbol>
          <Name>DRSH24</Name>
          <Description>BLOOMBERG ROLL SELECT INDEX FUTURE MAR 2024</Description>
          <Decimals>2</Decimals>
          <PipSize>2</PipSize>
          <PipFraction>2</PipFraction>
          <TickSize>0.1</TickSize>
        </PortfolioSymbol>
        <PortfolioSymbol>
          <Name>DRSM24</Name>
          <Description>BLOOMBERG ROLL SELECT INDEX FUTURE JUN 2024</Description>
          <Decimals>2</Decimals>
          <PipSize>2</PipSize>
          <PipFraction>2</PipFraction>
          <TickSize>0.1</TickSize>
        </PortfolioSymbol>
        <PortfolioSymbol>
          <Name>DRSU24</Name>
          <Description>BLOOMBERG ROLL SELECT INDEX FUTURE SEP 2024</Description>
          <Decimals>2</Decimals>
          <PipSize>2</PipSize>
          <PipFraction>2</PipFraction>
          <TickSize>0.1</TickSize>
        </PortfolioSymbol>
        <PortfolioSymbol>
          <Name>DRSZ24</Name>
          <Description>BLOOMBERG ROLL SELECT INDEX FUTURE DEC 2024</Description>
          <Decimals>2</Decimals>
          <PipSize>2</PipSize>
          <PipFraction>2</PipFraction>
          <TickSize>0.1</TickSize>
        </PortfolioSymbol>
      </Symbols>
    </PortfolioCategory>
    <PortfolioCategory>
      <Name>Year 2025</Name>
      <Symbols>
        <PortfolioSymbol>
          <Name>DRSH25</Name>
          <Description>BLOOMBERG ROLL SELECT INDEX FUTURE MAR 2025</Description>
          <Decimals>2</Decimals>
          <PipSize>2</PipSize>
          <PipFraction>2</PipFraction>
          <TickSize>0.1</TickSize>
        </PortfolioSymbol>
        <PortfolioSymbol>
          <Name>DRSM25</Name>
          <Description>BLOOMBERG ROLL SELECT INDEX FUTURE JUN 2025</Description>
          <Decimals>2</Decimals>
          <PipSize>2</PipSize>
          <PipFraction>2</PipFraction>
          <TickSize>0.1</TickSize>
        </PortfolioSymbol>
        <PortfolioSymbol>
          <Name>DRSU25</Name>
          <Description>BLOOMBERG ROLL SELECT INDEX FUTURE SEP 2025</Description>
          <Decimals>2</Decimals>
          <PipSize>2</PipSize>
          <PipFraction>2</PipFraction>
          <TickSize>0.1</TickSize>
        </PortfolioSymbol>
        <PortfolioSymbol>
          <Name>DRSZ25</Name>
          <Description>BLOOMBERG ROLL SELECT INDEX FUTURE DEC 2025</Description>
          <Decimals>2</Decimals>
          <PipSize>2</PipSize>
          <PipFraction>2</PipFraction>
          <TickSize>0.1</TickSize>
        </PortfolioSymbol>
      </Symbols>
    </PortfolioCategory>
    <PortfolioCategory>
      <Name>Year 2026</Name>
      <Symbols>
        <PortfolioSymbol>
          <Name>DRSH26</Name>
          <Description>BLOOMBERG ROLL SELECT INDEX FUTURE MAR 2026</Description>
          <Decimals>2</Decimals>
          <PipSize>2</PipSize>
          <PipFraction>2</PipFraction>
          <TickSize>0.1</TickSize>
        </PortfolioSymbol>
        <PortfolioSymbol>
          <Name>DRSM26</Name>
          <Description>BLOOMBERG ROLL SELECT INDEX FUTURE JUN 2026</Description>
          <Decimals>2</Decimals>
          <PipSize>2</PipSize>
          <PipFraction>2</PipFraction>
          <TickSize>0.1</TickSize>
        </PortfolioSymbol>
        <PortfolioSymbol>
          <Name>DRSU26</Name>
          <Description>BLOOMBERG ROLL SELECT INDEX FUTURE SEP 2026</Description>
          <Decimals>2</Decimals>
          <PipSize>2</PipSize>
          <PipFraction>2</PipFraction>
          <TickSize>0.1</TickSize>
        </PortfolioSymbol>
        <PortfolioSymbol>
          <Name>DRSZ26</Name>
          <Description>BLOOMBERG ROLL SELECT INDEX FUTURE DEC 2026</Description>
          <Decimals>2</Decimals>
          <PipSize>2</PipSize>
          <PipFraction>2</PipFraction>
          <TickSize>0.1</TickSize>
        </PortfolioSymbol>
      </Symbols>
    </PortfolioCategory>
    <PortfolioCategory>
      <Name>Year 2027</Name>
      <Symbols>
        <PortfolioSymbol>
          <Name>DRSH27</Name>
          <Description>BLOOMBERG ROLL SELECT INDEX FUTURE MAR 2027</Description>
          <Decimals>2</Decimals>
          <PipSize>2</PipSize>
          <PipFraction>2</PipFraction>
          <TickSize>0.1</TickSize>
        </PortfolioSymbol>
        <PortfolioSymbol>
          <Name>DRSM27</Name>
          <Description>BLOOMBERG ROLL SELECT INDEX FUTURE JUN 2027</Description>
          <Decimals>2</Decimals>
          <PipSize>2</PipSize>
          <PipFraction>2</PipFraction>
          <TickSize>0.1</TickSize>
        </PortfolioSymbol>
        <PortfolioSymbol>
          <Name>DRSU27</Name>
          <Description>BLOOMBERG ROLL SELECT INDEX FUTURE SEP 2027</Description>
          <Decimals>2</Decimals>
          <PipSize>2</PipSize>
          <PipFraction>2</PipFraction>
          <TickSize>0.1</TickSize>
        </PortfolioSymbol>
        <PortfolioSymbol>
          <Name>DRSZ27</Name>
          <Description>BLOOMBERG ROLL SELECT INDEX FUTURE DEC 2027</Description>
          <Decimals>2</Decimals>
          <PipSize>2</PipSize>
          <PipFraction>2</PipFraction>
          <TickSize>0.1</TickSize>
        </PortfolioSymbol>
      </Symbols>
    </PortfolioCategory>
    <PortfolioCategory>
      <Name>Year 2028</Name>
      <Symbols>
        <PortfolioSymbol>
          <Name>DRSH28</Name>
          <Description>BLOOMBERG ROLL SELECT INDEX FUTURE MAR 2028</Description>
          <Decimals>2</Decimals>
          <PipSize>2</PipSize>
          <PipFraction>2</PipFraction>
          <TickSize>0.1</TickSize>
        </PortfolioSymbol>
        <PortfolioSymbol>
          <Name>DRSM28</Name>
          <Description>BLOOMBERG ROLL SELECT INDEX FUTURE JUN 2028</Description>
          <Decimals>2</Decimals>
          <PipSize>2</PipSize>
          <PipFraction>2</PipFraction>
          <TickSize>0.1</TickSize>
        </PortfolioSymbol>
        <PortfolioSymbol>
          <Name>DRSU28</Name>
          <Description>BLOOMBERG ROLL SELECT INDEX FUTURE SEP 2028</Description>
          <Decimals>2</Decimals>
          <PipSize>2</PipSize>
          <PipFraction>2</PipFraction>
          <TickSize>0.1</TickSize>
        </PortfolioSymbol>
        <PortfolioSymbol>
          <Name>DRSZ28</Name>
          <Description>BLOOMBERG ROLL SELECT INDEX FUTURE DEC 2028</Description>
          <Decimals>2</Decimals>
          <PipSize>2</PipSize>
          <PipFraction>2</PipFraction>
          <TickSize>0.1</TickSize>
        </PortfolioSymbol>
      </Symbols>
    </PortfolioCategory>
    <PortfolioCategory>
      <Name>Year 2029</Name>
      <Symbols>
        <PortfolioSymbol>
          <Name>DRSH29</Name>
          <Description>BLOOMBERG ROLL SELECT INDEX FUTURE MAR 2029</Description>
          <Decimals>2</Decimals>
          <PipSize>2</PipSize>
          <PipFraction>2</PipFraction>
          <TickSize>0.1</TickSize>
        </PortfolioSymbol>
        <PortfolioSymbol>
          <Name>DRSM29</Name>
          <Description>BLOOMBERG ROLL SELECT INDEX FUTURE JUN 2029</Description>
          <Decimals>2</Decimals>
          <PipSize>2</PipSize>
          <PipFraction>2</PipFraction>
          <TickSize>0.1</TickSize>
        </PortfolioSymbol>
        <PortfolioSymbol>
          <Name>DRSU29</Name>
          <Description>BLOOMBERG ROLL SELECT INDEX FUTURE SEP 2029</Description>
          <Decimals>2</Decimals>
          <PipSize>2</PipSize>
          <PipFraction>2</PipFraction>
          <TickSize>0.1</TickSize>
        </PortfolioSymbol>
        <PortfolioSymbol>
          <Name>DRSZ29</Name>
          <Description>BLOOMBERG ROLL SELECT INDEX FUTURE DEC 2029</Description>
          <Decimals>2</Decimals>
          <PipSize>2</PipSize>
          <PipFraction>2</PipFraction>
          <TickSize>0.1</TickSize>
        </PortfolioSymbol>
      </Symbols>
    </PortfolioCategory>
    <PortfolioCategory>
      <Name>Year 2030</Name>
      <Symbols>
        <PortfolioSymbol>
          <Name>DRSH30</Name>
          <Description>BLOOMBERG ROLL SELECT INDEX FUTURE MAR 2030</Description>
          <Decimals>2</Decimals>
          <PipSize>2</PipSize>
          <PipFraction>2</PipFraction>
          <TickSize>0.1</TickSize>
        </PortfolioSymbol>
        <PortfolioSymbol>
          <Name>DRSM30</Name>
          <Description>BLOOMBERG ROLL SELECT INDEX FUTURE JUN 2030</Description>
          <Decimals>2</Decimals>
          <PipSize>2</PipSize>
          <PipFraction>2</PipFraction>
          <TickSize>0.1</TickSize>
        </PortfolioSymbol>
        <PortfolioSymbol>
          <Name>DRSU30</Name>
          <Description>BLOOMBERG ROLL SELECT INDEX FUTURE SEP 2030</Description>
          <Decimals>2</Decimals>
          <PipSize>2</PipSize>
          <PipFraction>2</PipFraction>
          <TickSize>0.1</TickSize>
        </PortfolioSymbol>
        <PortfolioSymbol>
          <Name>DRSZ30</Name>
          <Description>BLOOMBERG ROLL SELECT INDEX FUTURE DEC 2030</Description>
          <Decimals>2</Decimals>
          <PipSize>2</PipSize>
          <PipFraction>2</PipFraction>
          <TickSize>0.1</TickSize>
        </PortfolioSymbol>
      </Symbols>
    </PortfolioCategory>
    <PortfolioCategory>
      <Name>Year 2031</Name>
      <Symbols>
        <PortfolioSymbol>
          <Name>DRSH31</Name>
          <Description>BLOOMBERG ROLL SELECT INDEX FUTURE MAR 2031</Description>
          <Decimals>2</Decimals>
          <PipSize>2</PipSize>
          <PipFraction>2</PipFraction>
          <TickSize>0.1</TickSize>
        </PortfolioSymbol>
        <PortfolioSymbol>
          <Name>DRSM31</Name>
          <Description>BLOOMBERG ROLL SELECT INDEX FUTURE JUN 2031</Description>
          <Decimals>2</Decimals>
          <PipSize>2</PipSize>
          <PipFraction>2</PipFraction>
          <TickSize>0.1</TickSize>
        </PortfolioSymbol>
        <PortfolioSymbol>
          <Name>DRSU31</Name>
          <Description>BLOOMBERG ROLL SELECT INDEX FUTURE SEP 2031</Description>
          <Decimals>2</Decimals>
          <PipSize>2</PipSize>
          <PipFraction>2</PipFraction>
          <TickSize>0.1</TickSize>
        </PortfolioSymbol>
        <PortfolioSymbol>
          <Name>DRSZ31</Name>
          <Description>BLOOMBERG ROLL SELECT INDEX FUTURE DEC 2031</Description>
          <Decimals>2</Decimals>
          <PipSize>2</PipSize>
          <PipFraction>2</PipFraction>
          <TickSize>0.1</TickSize>
        </PortfolioSymbol>
      </Symbols>
    </PortfolioCategory>
    <PortfolioCategory>
      <Name>Year 2032</Name>
      <Symbols>
        <PortfolioSymbol>
          <Name>DRSH32</Name>
          <Description>BLOOMBERG ROLL SELECT INDEX FUTURE MAR 2032</Description>
          <Decimals>2</Decimals>
          <PipSize>2</PipSize>
          <PipFraction>2</PipFraction>
          <TickSize>0.1</TickSize>
        </PortfolioSymbol>
        <PortfolioSymbol>
          <Name>DRSM32</Name>
          <Description>BLOOMBERG ROLL SELECT INDEX FUTURE JUN 2032</Description>
          <Decimals>2</Decimals>
          <PipSize>2</PipSize>
          <PipFraction>2</PipFraction>
          <TickSize>0.1</TickSize>
        </PortfolioSymbol>
        <PortfolioSymbol>
          <Name>DRSU32</Name>
          <Description>BLOOMBERG ROLL SELECT INDEX FUTURE SEP 2032</Description>
          <Decimals>2</Decimals>
          <PipSize>2</PipSize>
          <PipFraction>2</PipFraction>
          <TickSize>0.1</TickSize>
        </PortfolioSymbol>
        <PortfolioSymbol>
          <Name>DRSZ32</Name>
          <Description>BLOOMBERG ROLL SELECT INDEX FUTURE DEC 2032</Description>
          <Decimals>2</Decimals>
          <PipSize>2</PipSize>
          <PipFraction>2</PipFraction>
          <TickSize>0.1</TickSize>
        </PortfolioSymbol>
      </Symbols>
    </PortfolioCategory>
    <PortfolioCategory>
      <Name>Year 2033</Name>
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        <PortfolioSymbol>
          <Name>DRSH33</Name>
          <Description>BLOOMBERG ROLL SELECT INDEX FUTURE MAR 2033</Description>
          <Decimals>2</Decimals>
          <PipSize>2</PipSize>
          <PipFraction>2</PipFraction>
          <TickSize>0.1</TickSize>
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        <PortfolioSymbol>
          <Name>DRSM33</Name>
          <Description>BLOOMBERG ROLL SELECT INDEX FUTURE JUN 2033</Description>
          <Decimals>2</Decimals>
          <PipSize>2</PipSize>
          <PipFraction>2</PipFraction>
          <TickSize>0.1</TickSize>
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        <PortfolioSymbol>
          <Name>DRSU33</Name>
          <Description>BLOOMBERG ROLL SELECT INDEX FUTURE SEP 2033</Description>
          <Decimals>2</Decimals>
          <PipSize>2</PipSize>
          <PipFraction>2</PipFraction>
          <TickSize>0.1</TickSize>
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        <PortfolioSymbol>
          <Name>DRSZ33</Name>
          <Description>BLOOMBERG ROLL SELECT INDEX FUTURE DEC 2033</Description>
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          <PipSize>2</PipSize>
          <PipFraction>2</PipFraction>
          <TickSize>0.1</TickSize>
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    </PortfolioCategory>
    <PortfolioCategory>
      <Name>Year 2034</Name>
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        <PortfolioSymbol>
          <Name>DRSH34</Name>
          <Description>BLOOMBERG ROLL SELECT INDEX FUTURE MAR 2034</Description>
          <Decimals>2</Decimals>
          <PipSize>2</PipSize>
          <PipFraction>2</PipFraction>
          <TickSize>0.1</TickSize>
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        <PortfolioSymbol>
          <Name>DRSM34</Name>
          <Description>BLOOMBERG ROLL SELECT INDEX FUTURE JUN 2034</Description>
          <Decimals>2</Decimals>
          <PipSize>2</PipSize>
          <PipFraction>2</PipFraction>
          <TickSize>0.1</TickSize>
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        <PortfolioSymbol>
          <Name>DRSU34</Name>
          <Description>BLOOMBERG ROLL SELECT INDEX FUTURE SEP 2034</Description>
          <Decimals>2</Decimals>
          <PipSize>2</PipSize>
          <PipFraction>2</PipFraction>
          <TickSize>0.1</TickSize>
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        <PortfolioSymbol>
          <Name>DRSZ34</Name>
          <Description>BLOOMBERG ROLL SELECT INDEX FUTURE DEC 2034</Description>
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          <PipSize>2</PipSize>
          <PipFraction>2</PipFraction>
          <TickSize>0.1</TickSize>
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    </PortfolioCategory>
    <PortfolioCategory>
      <Name>Year 2035</Name>
      <Symbols>
        <PortfolioSymbol>
          <Name>DRSH35</Name>
          <Description>BLOOMBERG ROLL SELECT INDEX FUTURE MAR 2035</Description>
          <Decimals>2</Decimals>
          <PipSize>2</PipSize>
          <PipFraction>2</PipFraction>
          <TickSize>0.1</TickSize>
        </PortfolioSymbol>
        <PortfolioSymbol>
          <Name>DRSM35</Name>
          <Description>BLOOMBERG ROLL SELECT INDEX FUTURE JUN 2035</Description>
          <Decimals>2</Decimals>
          <PipSize>2</PipSize>
          <PipFraction>2</PipFraction>
          <TickSize>0.1</TickSize>
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        <PortfolioSymbol>
          <Name>DRSU35</Name>
          <Description>BLOOMBERG ROLL SELECT INDEX FUTURE SEP 2035</Description>
          <Decimals>2</Decimals>
          <PipSize>2</PipSize>
          <PipFraction>2</PipFraction>
          <TickSize>0.1</TickSize>
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        <PortfolioSymbol>
          <Name>DRSZ35</Name>
          <Description>BLOOMBERG ROLL SELECT INDEX FUTURE DEC 2035</Description>
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          <PipSize>2</PipSize>
          <PipFraction>2</PipFraction>
          <TickSize>0.1</TickSize>
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    </PortfolioCategory>
    <PortfolioCategory>
      <Name>Year 2036</Name>
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        <PortfolioSymbol>
          <Name>DRSH36</Name>
          <Description>BLOOMBERG ROLL SELECT INDEX FUTURE MAR 2036</Description>
          <Decimals>2</Decimals>
          <PipSize>2</PipSize>
          <PipFraction>2</PipFraction>
          <TickSize>0.1</TickSize>
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        <PortfolioSymbol>
          <Name>DRSM36</Name>
          <Description>BLOOMBERG ROLL SELECT INDEX FUTURE JUN 2036</Description>
          <Decimals>2</Decimals>
          <PipSize>2</PipSize>
          <PipFraction>2</PipFraction>
          <TickSize>0.1</TickSize>
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        <PortfolioSymbol>
          <Name>DRSU36</Name>
          <Description>BLOOMBERG ROLL SELECT INDEX FUTURE SEP 2036</Description>
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          <PipSize>2</PipSize>
          <PipFraction>2</PipFraction>
          <TickSize>0.1</TickSize>
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        <PortfolioSymbol>
          <Name>DRSZ36</Name>
          <Description>BLOOMBERG ROLL SELECT INDEX FUTURE DEC 2036</Description>
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          <PipSize>2</PipSize>
          <PipFraction>2</PipFraction>
          <TickSize>0.1</TickSize>
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    </PortfolioCategory>
    <PortfolioCategory>
      <Name>Year 2037</Name>
      <Symbols>
        <PortfolioSymbol>
          <Name>DRSH37</Name>
          <Description>BLOOMBERG ROLL SELECT INDEX FUTURE MAR 2037</Description>
          <Decimals>2</Decimals>
          <PipSize>2</PipSize>
          <PipFraction>2</PipFraction>
          <TickSize>0.1</TickSize>
        </PortfolioSymbol>
        <PortfolioSymbol>
          <Name>DRSM37</Name>
          <Description>BLOOMBERG ROLL SELECT INDEX FUTURE JUN 2037</Description>
          <Decimals>2</Decimals>
          <PipSize>2</PipSize>
          <PipFraction>2</PipFraction>
          <TickSize>0.1</TickSize>
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        <PortfolioSymbol>
          <Name>DRSU37</Name>
          <Description>BLOOMBERG ROLL SELECT INDEX FUTURE SEP 2037</Description>
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          <PipSize>2</PipSize>
          <PipFraction>2</PipFraction>
          <TickSize>0.1</TickSize>
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        <PortfolioSymbol>
          <Name>DRSZ37</Name>
          <Description>BLOOMBERG ROLL SELECT INDEX FUTURE DEC 2037</Description>
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          <PipSize>2</PipSize>
          <PipFraction>2</PipFraction>
          <TickSize>0.1</TickSize>
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    </PortfolioCategory>
    <PortfolioCategory>
      <Name>Year 2038</Name>
      <Symbols>
        <PortfolioSymbol>
          <Name>DRSH38</Name>
          <Description>BLOOMBERG ROLL SELECT INDEX FUTURE MAR 2038</Description>
          <Decimals>2</Decimals>
          <PipSize>2</PipSize>
          <PipFraction>2</PipFraction>
          <TickSize>0.1</TickSize>
        </PortfolioSymbol>
        <PortfolioSymbol>
          <Name>DRSM38</Name>
          <Description>BLOOMBERG ROLL SELECT INDEX FUTURE JUN 2038</Description>
          <Decimals>2</Decimals>
          <PipSize>2</PipSize>
          <PipFraction>2</PipFraction>
          <TickSize>0.1</TickSize>
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        <PortfolioSymbol>
          <Name>DRSU38</Name>
          <Description>BLOOMBERG ROLL SELECT INDEX FUTURE SEP 2038</Description>
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          <PipSize>2</PipSize>
          <PipFraction>2</PipFraction>
          <TickSize>0.1</TickSize>
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        <PortfolioSymbol>
          <Name>DRSZ38</Name>
          <Description>BLOOMBERG ROLL SELECT INDEX FUTURE DEC 2038</Description>
          <Decimals>2</Decimals>
          <PipSize>2</PipSize>
          <PipFraction>2</PipFraction>
          <TickSize>0.1</TickSize>
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    </PortfolioCategory>
    <PortfolioCategory>
      <Name>Year 2039</Name>
      <Symbols>
        <PortfolioSymbol>
          <Name>DRSH39</Name>
          <Description>BLOOMBERG ROLL SELECT INDEX FUTURE MAR 2039</Description>
          <Decimals>2</Decimals>
          <PipSize>2</PipSize>
          <PipFraction>2</PipFraction>
          <TickSize>0.1</TickSize>
        </PortfolioSymbol>
        <PortfolioSymbol>
          <Name>DRSM39</Name>
          <Description>BLOOMBERG ROLL SELECT INDEX FUTURE JUN 2039</Description>
          <Decimals>2</Decimals>
          <PipSize>2</PipSize>
          <PipFraction>2</PipFraction>
          <TickSize>0.1</TickSize>
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        <PortfolioSymbol>
          <Name>DRSU39</Name>
          <Description>BLOOMBERG ROLL SELECT INDEX FUTURE SEP 2039</Description>
          <Decimals>2</Decimals>
          <PipSize>2</PipSize>
          <PipFraction>2</PipFraction>
          <TickSize>0.1</TickSize>
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        <PortfolioSymbol>
          <Name>DRSZ39</Name>
          <Description>BLOOMBERG ROLL SELECT INDEX FUTURE DEC 2039</Description>
          <Decimals>2</Decimals>
          <PipSize>2</PipSize>
          <PipFraction>2</PipFraction>
          <TickSize>0.1</TickSize>
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    </PortfolioCategory>
    <PortfolioCategory>
      <Name>Year 2040</Name>
      <Symbols>
        <PortfolioSymbol>
          <Name>DRSH40</Name>
          <Description>BLOOMBERG ROLL SELECT INDEX FUTURE MAR 2040</Description>
          <Decimals>2</Decimals>
          <PipSize>2</PipSize>
          <PipFraction>2</PipFraction>
          <TickSize>0.1</TickSize>
        </PortfolioSymbol>
        <PortfolioSymbol>
          <Name>DRSM40</Name>
          <Description>BLOOMBERG ROLL SELECT INDEX FUTURE JUN 2040</Description>
          <Decimals>2</Decimals>
          <PipSize>2</PipSize>
          <PipFraction>2</PipFraction>
          <TickSize>0.1</TickSize>
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        <PortfolioSymbol>
          <Name>DRSU40</Name>
          <Description>BLOOMBERG ROLL SELECT INDEX FUTURE SEP 2040</Description>
          <Decimals>2</Decimals>
          <PipSize>2</PipSize>
          <PipFraction>2</PipFraction>
          <TickSize>0.1</TickSize>
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        <PortfolioSymbol>
          <Name>DRSZ40</Name>
          <Description>BLOOMBERG ROLL SELECT INDEX FUTURE DEC 2040</Description>
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          <PipFraction>2</PipFraction>
          <TickSize>0.1</TickSize>
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    </PortfolioCategory>
    <PortfolioCategory>
      <Name>Year 2041</Name>
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        <PortfolioSymbol>
          <Name>DRSH41</Name>
          <Description>BLOOMBERG ROLL SELECT INDEX FUTURE MAR 2041</Description>
          <Decimals>2</Decimals>
          <PipSize>2</PipSize>
          <PipFraction>2</PipFraction>
          <TickSize>0.1</TickSize>
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        <PortfolioSymbol>
          <Name>DRSM41</Name>
          <Description>BLOOMBERG ROLL SELECT INDEX FUTURE JUN 2041</Description>
          <Decimals>2</Decimals>
          <PipSize>2</PipSize>
          <PipFraction>2</PipFraction>
          <TickSize>0.1</TickSize>
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        <PortfolioSymbol>
          <Name>DRSU41</Name>
          <Description>BLOOMBERG ROLL SELECT INDEX FUTURE SEP 2041</Description>
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          <PipSize>2</PipSize>
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          <TickSize>0.1</TickSize>
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        <PortfolioSymbol>
          <Name>DRSZ41</Name>
          <Description>BLOOMBERG ROLL SELECT INDEX FUTURE DEC 2041</Description>
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          <PipSize>2</PipSize>
          <PipFraction>2</PipFraction>
          <TickSize>0.1</TickSize>
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    </PortfolioCategory>
    <PortfolioCategory>
      <Name>Year 2042</Name>
      <Symbols>
        <PortfolioSymbol>
          <Name>DRSH42</Name>
          <Description>BLOOMBERG ROLL SELECT INDEX FUTURE MAR 2042</Description>
          <Decimals>2</Decimals>
          <PipSize>2</PipSize>
          <PipFraction>2</PipFraction>
          <TickSize>0.1</TickSize>
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        <PortfolioSymbol>
          <Name>DRSM42</Name>
          <Description>BLOOMBERG ROLL SELECT INDEX FUTURE JUN 2042</Description>
          <Decimals>2</Decimals>
          <PipSize>2</PipSize>
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          <TickSize>0.1</TickSize>
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        <PortfolioSymbol>
          <Name>DRSU42</Name>
          <Description>BLOOMBERG ROLL SELECT INDEX FUTURE SEP 2042</Description>
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        <PortfolioSymbol>
          <Name>DRSZ42</Name>
          <Description>BLOOMBERG ROLL SELECT INDEX FUTURE DEC 2042</Description>
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    <PortfolioCategory>
      <Name>Year 2043</Name>
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          <Name>DRSH43</Name>
          <Description>BLOOMBERG ROLL SELECT INDEX FUTURE MAR 2043</Description>
          <Decimals>2</Decimals>
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          <TickSize>0.1</TickSize>
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        <PortfolioSymbol>
          <Name>DRSM43</Name>
          <Description>BLOOMBERG ROLL SELECT INDEX FUTURE JUN 2043</Description>
          <Decimals>2</Decimals>
          <PipSize>2</PipSize>
          <PipFraction>2</PipFraction>
          <TickSize>0.1</TickSize>
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        <PortfolioSymbol>
          <Name>DRSU43</Name>
          <Description>BLOOMBERG ROLL SELECT INDEX FUTURE SEP 2043</Description>
          <Decimals>2</Decimals>
          <PipSize>2</PipSize>
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          <TickSize>0.1</TickSize>
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        <PortfolioSymbol>
          <Name>DRSZ43</Name>
          <Description>BLOOMBERG ROLL SELECT INDEX FUTURE DEC 2043</Description>
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    <PortfolioCategory>
      <Name>Year 2044</Name>
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          <Name>DRSH44</Name>
          <Description>BLOOMBERG ROLL SELECT INDEX FUTURE MAR 2044</Description>
          <Decimals>2</Decimals>
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        <PortfolioSymbol>
          <Name>DRSM44</Name>
          <Description>BLOOMBERG ROLL SELECT INDEX FUTURE JUN 2044</Description>
          <Decimals>2</Decimals>
          <PipSize>2</PipSize>
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        <PortfolioSymbol>
          <Name>DRSU44</Name>
          <Description>BLOOMBERG ROLL SELECT INDEX FUTURE SEP 2044</Description>
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          <Description>BLOOMBERG ROLL SELECT INDEX FUTURE DEC 2044</Description>
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    <PortfolioCategory>
      <Name>Year 2045</Name>
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          <Name>DRSH45</Name>
          <Description>BLOOMBERG ROLL SELECT INDEX FUTURE MAR 2045</Description>
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        <PortfolioSymbol>
          <Name>DRSM45</Name>
          <Description>BLOOMBERG ROLL SELECT INDEX FUTURE JUN 2045</Description>
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          <PipSize>2</PipSize>
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        <PortfolioSymbol>
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    <PortfolioCategory>
      <Name>Year 2046</Name>
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    <PortfolioCategory>
      <Name>Year 2047</Name>
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        <PortfolioSymbol>
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    <PortfolioCategory>
      <Name>Year 2049</Name>
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    <PortfolioCategory>
      <Name>Year 2050</Name>
      <Symbols>
        <PortfolioSymbol>
          <Name>DRSH50</Name>
          <Description>BLOOMBERG ROLL SELECT INDEX FUTURE MAR 2050</Description>
          <Decimals>2</Decimals>
          <PipSize>2</PipSize>
          <PipFraction>2</PipFraction>
          <TickSize>0.1</TickSize>
        </PortfolioSymbol>
        <PortfolioSymbol>
          <Name>DRSM50</Name>
          <Description>BLOOMBERG ROLL SELECT INDEX FUTURE JUN 2050</Description>
          <Decimals>2</Decimals>
          <PipSize>2</PipSize>
          <PipFraction>2</PipFraction>
          <TickSize>0.1</TickSize>
        </PortfolioSymbol>
        <PortfolioSymbol>
          <Name>DRSU50</Name>
          <Description>BLOOMBERG ROLL SELECT INDEX FUTURE SEP 2050</Description>
          <Decimals>2</Decimals>
          <PipSize>2</PipSize>
          <PipFraction>2</PipFraction>
          <TickSize>0.1</TickSize>
        </PortfolioSymbol>
        <PortfolioSymbol>
          <Name>DRSZ50</Name>
          <Description>BLOOMBERG ROLL SELECT INDEX FUTURE DEC 2050</Description>
          <Decimals>2</Decimals>
          <PipSize>2</PipSize>
          <PipFraction>2</PipFraction>
          <TickSize>0.1</TickSize>
        </PortfolioSymbol>
      </Symbols>
    </PortfolioCategory>
  </Categories>
</Portfolio>