| Alpha ATS (ALPHA) | 
														
								| American Stock Exchange (NYSE AMEX) | 
														
								| Arca (NYSE) | 
														
								| ArcaEdge | 
														
								| BATS | 
														
								| NASDAQ OMX BX (BEX) | 
														
								| BONDESK | 
														
								| BondDesk | 
														
								| Boston Options Exchange (BOX) | 
														
								| BATS BYX | 
														
								| Chicago Board Options Exchange (CBOE) | 
														
								| CBOE C2 | 
														
								| CBOT (Floor-Based) | 
														
								| Montreal Exchange | 
														
								| CBOE Futures Exchange (CFE) | 
														
								| Chi-X | 
														
								| Chicago Stock Exchange (CHX) | 
														
								| CME (Floor-Based) | 
														
								| Direct Edge | 
														
								| Direct Edge Dark Pool | 
														
								| EDGEA | 
														
								| Bats EDGX Options Exchange | 
														
								| GEMINI | 
														
								| IBCFD | 
														
								| ICEUS | 
														
								| IEX | 
														
								| ISE Options Exchange | 
														
								| ISE Stock Exchange | 
														
								| INET (Island) | 
														
								| ISE Mercury | 
														
								| Mexican Derivatives Exchange | 
														
								| Mexican Stock Exchange | 
														
								| MIAX Options Exchange | 
														
								| MuniCenter | 
														
								| NASDAQ | 
														
								| NASDAQ OMX BX Options Exchange | 
														
								| NASDAQOM | 
														
								| Knight Securities | 
														
								| New York Board of Trade | 
														
								| New York Mercantile Exchange (NYMEX) | 
														
								| New York Stock Exchange (NYSE) | 
														
								| NYSE Liffe | 
														
								| OMEGA ECN | 
														
								| MIAX PEARL | 
														
								| Philadelphia Stock Exchange (PHLX) | 
														
								| Pink OTC Markets | 
														
								| Pacific Exchange (PSE) | 
														
								| NASDAQ OMX PSX (PSX) | 
														
								| PURE | 
														
								| Tradeweb | 
														
								| Tradeweb for US Government Securities | 
														
								| Toronto Stock Exchange | 
														
								| ValuBond | 
														
								| ValuBond for US Government Securities | 
														
								| Knight BondPoint for Munis | 
														
								| TSX Venture | 
													
							
								| Europe | 
						
						
														
								| Euronext NL Stocks (AEB) | 
														
								| BATS Europe (BATECH) | 
														
								| BATS Europe (BATEDE) | 
														
								| BATS Europe (BATEEN) | 
														
								| Bats Europe (BATEES) | 
														
								| BATS Europe (BATEUK) | 
														
								| Euronext Brussels (Belfox) | 
														
								| Bolsa de Madrid | 
														
								| BVL | 
														
								| Borsa Italiana (BVME) | 
														
								| CHI-X Europe Ltd Swiss | 
														
								| CHI-X Europe LTD Clearstream | 
														
								| CHI-X Europe LTD Clearnet (CHIXEN) | 
														
								| CHI-X Europe Ltd Clearnet (CHIXES) | 
														
								| CHI-X Europe Ltd Crest (CHIXUK) | 
														
								| Swiss Exchange (SWX) | 
														
								| Euronext Bonds | 
														
								| Euronext NL Derivatives (FTA) | 
														
								| Frankfurt Stock Exchange (FWB) | 
														
								| XETRA (IBIS) | 
														
								| Intercontinental Exchange (ICEEU) | 
														
								| Borsa Italiana (IDEM) | 
														
								| Intercontinental Exchange (ICE/IPE) | 
														
								| London Stock Exchange (LSE) | 
														
								| Euronext France (MATIF) | 
														
								| Spanish Futures & Options Exchange (MEFF) | 
														
								| Euronext France (MONEP) | 
														
								| Stockholm Derivatives Exchange | 
														
								| OMXNO | 
														
								| Euronext France (SBF) | 
														
								| Swedish Stock Exchange | 
														
								| Stuttgart Stock Exchange (SWB) | 
														
								| Tradegate Exchange (TRADEGATE) | 
														
								| Turquoise CH (TRQXCH) | 
														
								| Turquoise DE (TRQXDE) | 
														
								| Turquoise | 
														
								| VIRT-X (VIRTX) | 
														
								| Vienna Stock Exchange (VSE) | 
													
							
								| Asia/Pacific |