From OCC data, here’s a look at March 2014 marketshare figures.?

March 2014 Total Options Marketshare

AMEX- 10.76%
BATS- 4.11%
BOX- 2.81%
CBOE- 27.79%
C2- 1.46%
GEM- 2.63%
ISE- 11.82%
MIAX- 2.74%
NOBO- 0.95%
NSDQ- 9.66%
NYSE Arca- 11.12%
OMX PHLX- 14.15%

March 2013 Total Options Marketshare

AMEX- 13.37%
BATS- 3.76%
BOX- 2.06%
CBOE- 25.93%
C2- 1.86%
ISE- 15.19%
MIAX- 0.18%
NOBO- 0.86%
NSDQ- 8.13%
NYSE Arca- 10.81%
OMX PHLX- 17.86%

March 2014 Equity Options Marketshare

AMEX- 11.68%
BATS- 4.54%
BOX- 3.10%
CBOE- 20.53%
C2- 1.60%
GEM- 2.91%
ISE- 13.05%
MIAX- 3.03%
NOBO- 1.05%
NSDQ- 10.67%
NYSE Arca- 12.20%
OMX PHLX- 15.63%

March 2013 Equity Options Marketshare

AMEX- 14.89%
BATS- 4.20%
BOX- 2.30%
CBOE- 17.83%
C2- 2.07%
ISE- 16.67%
MIAX- 0.20%
NOBO- 0.96%
NSDQ- 9.07%
NYSE Arca- 11.99%
OMX PHLX- 19.83%?