Put/Call Ratio — May 21, 2013

Each report is available in HTML format only. Put/Call Ratio data is available for up to two (2) years. Archived data can be found in the Historical Volume Query.

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Exchange Equity Index Debt Exchange Total
  Volume P/C Ratio Market Share Volume P/C Ratio Market Share Volume P/C Ratio Market Share Volume Market Share
AMEX
Calls 1,070,806     2,624     0        
Puts 963,696     2,982     0        
Total 2,034,502 0.90 15.00% 5,606 1.14 0.30% 0 0.00 0.00% 2,040,108 13.24%
ARCA
Calls 1,062,024     2,095     0        
Puts 680,555     6,196     0        
Total 1,742,579 0.64 12.85% 8,291 2.96 0.45% 0 0.00 0.00% 1,750,870 11.36%
BATS
Calls 370,228     0     0        
Puts 254,290     0     0        
Total 624,518 0.69 4.60% 0 0.00 0.00% 0 0.00 0.00% 624,518 4.05%
BOX
Calls 240,890     88     0        
Puts 160,363     128     0        
Total 401,253 0.67 2.96% 216 1.45 0.01% 0 0.00 0.00% 401,469 2.61%
C2
Calls 110,478     0     0        
Puts 218,519     0     0        
Total 328,997 1.98 2.43% 0 0.00 0.00% 0 0.00 0.00% 328,997 2.13%
CBOE
Calls 1,252,933     919,508     0        
Puts 1,096,376     902,798     0        
Total 2,349,309 0.88 17.32% 1,822,306 0.98 98.82% 0 0.00 0.00% 4,171,615 27.07%
ISE
Calls 1,303,326     1,201     0        
Puts 981,725     3,070     0        
Total 2,285,051 0.75 16.84% 4,271 2.56 0.23% 0 0.00 0.00% 2,289,322 14.86%
MIAX
Calls 30,998     0     0        
Puts 28,126     0     0        
Total 59,124 0.91 0.44% 0 0.00 0.00% 0 0.00 0.00% 59,124 0.38%
NOBO
Calls 67,515     0     0        
Puts 60,412     0     0        
Total 127,927 0.89 0.94% 0 0.00 0.00% 0 0.00 0.00% 127,927 0.83%
NSDQ
Calls 715,461     879     0        
Puts 504,111     780     0        
Total 1,219,572 0.70 8.99% 1,659 0.89 0.09% 0 0.00 0.00% 1,221,231 7.93%
PHLX
Calls 1,530,965     897     0        
Puts 861,818     904     0        
Total 2,392,783 0.56 17.64% 1,801 1.01 0.10% 0 0.00 0.00% 2,394,584 15.54%
OCC Totals
Calls 7,755,624     927,292     0     8,682,916  
Puts 5,809,991     916,858     0     6,726,849  
Total 13,565,615 0.75 100.00% 1,844,150 0.99 100.00% 0 0.00 0.00% 15,409,765 100.00%