Y Symbols Y Symbols Y Alleghany Corp 3 2 1 0.001 YD Symbols YDKN Yadkin Valley Financial Corp 3 2 1 0.001 YE Symbols YELP Yelp Inc 3 2 1 0.001 YG Symbols YGE Yingli Green Energy Holding Company 3 2 1 0.001 YP Symbols YPF Ypf Sociedad Anonima 3 2 1 0.001 YR Symbols YRD Yirendai Ltd. 3 2 1 0.001 YU Symbols YUM Yum! Brands 3 2 1 0.001 YUME Yume Inc 3 2 1 0.001 YZ Symbols YZC Yanzhou Coal Mining Company 3 2 1 0.001