• Obamanomics
• Obelisk Consensus Algorithm
• Objective Probability
• Obligation
• Obligatory Reinsurance
• Obligor
• Obsolescence Risk
• Obsolete Inventory
• Occupancy Rate
• Occupational Labor Mobility
• Occupational Safety And Health Act
• Occupy Wall Street (OWS)
• Occurrence Policy
• Ocean Bills of Lading
• October Effect
• Odd Lot
• Odd Lot Theory
• Odious Debt
• OEX
• Off-Balance Sheet (OBS)
• Off-Balance Sheet Financing (OBSF)
• Off-Chain Transactions (Cryptocurrency)
• Offensive Competitive Strategy
• Offer
• Offer in Compromise
• Offering
• Offering Circular
• Offering Memorandum
• Offering Price
• OHLC
• OHLC Chart
• OHLCV
• Oil ETF
• Oil Field
• Oil Initially In Place (OIIP)
• Oil Pollution Act of 1990
• Oil Price to Natural Gas Ratio
• Oil Refinery
• Oil Reserves
• Oil Sands
• Okun's Law
• Old Economy
• Old Lady
• Old-Age, Survivors, and Disability Insurance (OASDI) Program
• Oligopoly
• Oligopsony
• Oman Rial (OMR)
• Omani Rial OMR
• Omega
• Omnibus Account
• On Account
• On-Balance Volume (OBV)
• On-Chain Governance
• One Bank Holding Company
• One Belt One Road (OBOR)
• One Cancels Other OCO
• One Night Stand Investment
• One Percent Rule
• One Time Framing OTF
• One-Cancels-the-Other Order (OCO)
• Opaque Pricing
• Opco
• OPEC Basket
• Open
• Open Architecture
• Open Auction In-Range OAIR
• Open Auction Out-of-Range (OAOOR)
• Open Banking
• Open Cover
• Open Drive OD
• Oracle of Omaha
• Oral Contract
• Orange Book
• Order
• Order Audit Trail System (OATS)
• Order Book
• Order Driven Market
• Order Imbalance
• Order Management Systems (OMS)
• Order Paper
• Oscillator
• Oscillator of a Moving Average (OsMA)
• Oslo Stock Exchange (OSL) .OL
• OTC Markets Group Inc.
• OTC Options
• OTC Pink
• OTCQB (The Venture Market): Definition in Stocks and Benefits
• OTCQX
• Other Comprehensive Basis of Accounting (OCBOA)
• Other Current Assets (OCA)
• Other Current Liabilities
• Other Long-Term Liabilities
• Other Peoples Money OPM
• Out Of The Money (OTM)
• Outcome Bias
• Outlay Cost
• Out-of-Pocket Expenses
• Out-of-Pocket Limit
• Outperform
• Outplacement
• Output Gap
• Outright Forward
• Outright Futures Position
• Over and Short
• Over The Counter OTC
• Over the Top (OTT)
• Over-55 Home Sale Exemption
• Overall Liquidity Ratio
• Overall Turnover
• Overallotment: Definition, Purpose, and Example
• Overbought
• Overcapitalization
• Overcast
• Owner Earnings Run Rate
• Owner Financing
• Owner-Occupant
• Owners' Equivalent Rent (OER)
• Own-Occupation Policy
• Oxford Saïd Business School (SBS)