Market Share Statistics - April 2012

The NASDAQ Stock Market NASDAQ OMX BX NASDAQ OMX PSX
  Matched Market Share Average Daily Share Volume Matched Market Share Average Daily Share Volume Matched Market Share Average Daily Share Volume
U.S. Equities 18.38% 1.2 Billion 2.92% 190 Million 1.24% 81 Million
Tape A 14.12% 526 Million 2.84% 106 Million 0.79% 29 Million
Tape B 19.45% 212 Million 2.90% 32 Million 2.31% 25 Million
Tape C 27.00% 460 Million 3.10% 53 Million 1.56% 27 Million
U.S. ETFs 20.03% 203 Million 3.10% 31 Million 2.60% 26 Million

 

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Data represent share volume of NASDAQ-listed, NYSE-listed or U.S. equity securities (including ETFs) that are executed on the NASDAQ, BX and PSX books as a percentage of consolidated market volume. Data are single counted.

*Trades Reported to the FINRA/NASDAQ TRF represent internalized volume and other trade reporting to the FINRA/NASDAQ Trade Reporting FacilityTM, a facility of FINRA that is operated by NASDAQ.