Symbol Name Puts Calls RealTime P/C Avg P/C
PH Parker Hannifin Corp 3,671 70 52.44 1.58
ARUN Aruba Networks Inc 9,775 199 49.12 1.49
CASY Caseys General Stores Inc 3,570 106 33.68 0.97
MDC M D C Holdings Inc 3,209 107 29.99 5.48
CX Cemex SaB De Cv 4,334 163 26.59 1.33
ME Mariner Energy Inc 2,648 107 24.75 4.60
MHP McGraw Hill Companies Inc 5,171 239 21.64 2.51
FLEX Flextronics International Ltd 9,425 487 19.35 0.40
NSC Norfolk Southern Corp 7,179 484 14.83 0.98
DB Deutsche Bank Aktiengesellschaft 3,504 281 12.47 1.29

*Scanning all single-stocks subject to 2500 contracts minimum call or put volume