S Short    W Contest winner
OMINTO INC (Jul 17) S
OMNICARE INC (Sep 12)
OMNICARE INC (Jan 12) S
Omnicom (Dec 08) S
ON ASSIGNMENT INC (Nov 14)
ON DECK CAPITAL INC (Mar 16)
ON SEMICONDUCTOR CORP (Jul 17)
ON SEMICONDUCTOR CORP (Jan 14)
ONCOSEC MEDICAL INC (Jul 17)
ONCOTHYREON INC (Jul 11)
One Main (Nov 16)
ONEX CORP (Feb 18)
Onthehouse (Feb 16)
ONVIA INC (Jan 14)
ONVIA INC (Jul 13)
OOMA INC (Sep 16)
OPEN RANGE ENERGY CORP (Oct 11)
OPEN TEXT CORP (Oct 12)
OPENTABLE INC (Oct 09) S
OPENTV CORP CLASS A (Feb 09)
Opera Software (Nov 16)
Ophthotech Corp (Jun 15)
Opko (Mar 13) S
OPKO HEALTH INC (Feb 12) S
Opnext (Apr 08)
OPPENHEIMER HOLDINGS INC (Mar 15)
OPPENHEIMER HOLDINGS INC (Dec 13)
OPT-SCIENCES CORP (Sep 15)
OPTI Inc. (Sep 08)
OPTIMAL PAYMENTS (Sep 12)
ORACLE CORP (Apr 17)
ORACLE CORP (Jun 14)
ORACLE CORP (Apr 12)
ORACLE CORP (Feb 09)
ORBCOMM INC (Nov 12)
ORBITAL ATK INC (Jul 16)
ORBITAL ATK INC -PRO FORMA (Apr 15)
ORBITAL SCIENCES CORP (Aug 12)
ORBITZ WORLDWIDE INC (Dec 14)
ORBOTECH LTD (Mar 13)
ORCHARD SUPPLY HARDWARE STOR (Feb 13) S
ORCHID CELLMARK INC (Sep 11)
ORCHIDS PAPER PRODUCTS (Feb 17) S
ORGANIGRAM HOLDINGS INC (OGI.) (Jun 16)
ORGANOVO HOLDINGS INC (Mar 14) S
ORIENTAL FINANCIAL GROUP INC (May 10)