O
Ownership
OASOption Adjusted Spread
OCCOptions Clearing Corporation
OCO One Cancels the Other
OCSOvernight Comparison System
ODI Overseas Direct Investment
ODR Overseas Depository Receipt
OF Oppenheimer Funds
OFDIOutward Foreign Direct Investment
OFDIOverseas Foreign Direct Investment
OFDI Originating Financial Depository Institution
OI Option Investment
OID Original Issue Discount
OIF Oklahoma Investment Forum
OIOOpportunities In Options
OLB On Line Broker
OMFOther Mutual Funds
OMO Open Market Operations
OMX Option Market Index
OOM Out Of Market
OPICOpening Price Index Calculation
OPRAOptions Price Reporting Authority
OPRA Options Reporting Authority
OPS Other Permanent Shareholders
OS Open Street
OSEOsaka Securities Exchange
OSE Oslo Stock Exchange
OSFOsaka Stock Futures 50
OSO Outperform Stock Options
OSS Other Stable Shareholders
OSTIOpen Standard Trading Interface
OSX Philadelphia Stock Exchange Oil Service Sector
OT Orphan Trader
OTB Open To Buy
OTC Optical Telephone Corporation
OTCBBOver The Counter Bulletin Board
OTCEIOver The Counter Exchange Of India
OTCX Over The Counter exchange
OXFOxford Properties Group
OXG Oxford Properties Group
OYMOlympus Pacific Minerals
OYP O & Y Properties Corporation