Municipals Inv Grade United States CUMB Virtus Cumberland Municipal Bond ETF 4 2 2 0.001 MMIN IQ MacKay Shields Municipal Insured ETF 4 2 2 0.001 MUB iShares National Muni Bond ETF 4 2 2 0.001 PRB VanEck Vectors Pre-Refunded Municipal Index ETF 4 2 2 0.001 PZA Invesco National AMT-Free Municipal Bond ETF 4 2 2 0.001 TFI SPDR Nuveen Barclays Municipal Bond ETF 4 2 2 0.001 VTEB Vanguard Tax-Exempt Bond ETF 4 2 2 0.001