Obamanomics Obelisk Consensus Algorithm Objective Probability Obligation Obligatory Reinsurance Obligor Obsolescence Risk Obsolete Inventory Occupancy Rate Occupational Labor Mobility Occupational Safety And Health Act 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) Off-the-Run Treasuries Offensive Competitive Strategy Offer Offer in Compromise Offering Offering Circular Offering Memorandum Offering Price Office of Foreign Asset Control (OFAC) Office of the Comptroller of the Currency (OCC) Office of the Superintendent of Financial Institutions (OSFI) Office of Thrift Supervision (OTS) Official Settlement Account Official Strike Offline Debit Card Offset Offset Mortgage Offsetting Transaction Offshore Offshore Banking Unit (OBU) Offshore Mutual Fund Offshore Portfolio Investment Strategy (OPIS) Offtake Agreement OHLC Chart 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-Age, Survivors, and Disability Insurance (OASDI) Program Old Economy Old Lady Oligopoly Oligopsony What an Ombudsman Does, Types, Pros & Cons Omega Omnibus Account Oman Rial (OMR) On Account On-Balance Volume (OBV) On-Chain Governance On-the-Run Treasury On-the-Run Treasury Yield Curve On-Us Item One Bank Holding Company One Belt One Road (OBOR) One-Cancels-the-Other Order (OCO) One-Child Policy One Night Stand Investment One Percent Rule One-Stop Shop One-Tailed Test One-Third Rule One-Time Charge One-Time Item One-Touch Option OneCoin Onerous Contract Online Banking Online Shoplifting Online-to-Offline (O2O) Commerce Definition and Trends Ontario Securities Commission (OSC) Ontario Teachers' Pension Plan Board (OTPPB) Opaque Pricing Opco Operating Company/Property Company Deal (OPCO or PROPCO) OPEC Basket Open Open Architecture Open Banking Open Cover Open-End Credit Open-End Fund Open-End Lease Open-End Management Company Open-End Mortgage Open Ended Investment Company (OEIC) Open House Open Interest Open Kimono Open Listing Open Loop Card Open Market Open Market Operations Open-Market Rate Open-Market Transaction Open Mouth Operations Open Offer Open Order Open Outcry Open Position Open Source Open Trade Equity (OTE) Opening Bell Opening Cross Opening Imbalance Only Order (OIO) Opening Price Opening Range Operating Activities Operating Cash Flow (OCF) Operating Cash Flow Demand (OCFD) Operating Cash Flow Margin Operating Cash Flow Ratio Operating Cost Operating Earnings Operating Expense Operating Expense Ratio Operating Income Operating Income Before Depreciation and Amortization (OIBDA) Operating Lease Operating Leverage Operating Loss (OL) Operating Margin Operating Profit Operating Ratio (OPEX) Operating Revenue Operation Twist Operational Efficiency Operational Risk Operational Target Operations Management Opportunity Cost Oprah Effect Optimal Capital Structure Optimal Currency Area Optimization Optimized Portfolio As Listed Securities (OPALS) Optimum Currency Area (OCA) Theory Option Adjustable-Rate Mortgage (Option ARM) Option-Adjusted Spread (OAS) Option Agreement Option Chain Option Class Option Cycle Option Disclosure Document Option Margin Option Pool Option Premium Option Pricing Theory Option Series Optionable Stock Options Options Backdating Options Clearing Corporation (OCC) Options Contract Options Industry Council (OIC) Options on Futures Options Price Reporting Authority (OPRA) 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 Order Protection Rule Orderly Market Ordinary and Necessary Expense (O&NE) Ordinary Annuity Ordinary Dividends Ordinary Income Ordinary Loss Ordinary Shares of Stock Organic Growth: What It Is, and Why It Matters to Investors Organic Reserve WordStrment Organic Sales Organisation of Eastern Caribbean States (OECS) Organisation for Economic Co-operation and Development (OECD) Organization of Arab Petroleum Exporting Countries (OAPEC) Organization of the Petroleum Exporting Countries (OPEC) Organizational Behavior (OB) Organizational Chart Organizational Economics Organizational Structure Organized Labor Original Cost Original Equipment Manufacturer (OEM) Original Face Original Issue Discount (OID) Origination Origination Fee Origination Points: Meaning, Examples in Mortgages Orphan Block: What it is, How it Works, FAQ Orphan Drug Credit 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 Post-Employment Benefits (OPEB) Other Post-Retirement Benefits Other Real Estate Owned (OREO) Out-of-Pocket Expenses Out-of-Pocket Limit Out of The Money (OTM) Outcome Bias Outlay Cost Outperform Outplacement Output Gap Outright Forward Outright Futures Position Outright Option Outside Days Outside Director Outside Reversal Outside Sales Outsourcing Outstanding Check Outward Arbitrage Outward Direct Investment (ODI) Over-55 Home Sale Exemption Over and Short Over-Hedging Over-Limit Fee Over-Line Over-Selling Over-the-Counter (OTC) Over-the-Counter Bulletin Board (OTCBB) Over-the-Counter Exchange of India (OTCEI) Over-the-Counter Market Over the Top (OTT) Overall Liquidity Ratio: What It Is, How It Works Overall Turnover Overallotment: Definition, Purpose, and Example Overbought Overcapitalization Overcast Overcollateralization (OC) Overdraft Overdraft Protection Overextension Overfitting Overfunded Pension Plan Overhang Overhead Overhead Rate Overhead Ratio Overheated Economy Overlapping Debt Overlay Overleveraged Overnight Position Overnight Index Swap Overnight Rate Overnight Trading Overreaction Overseas Private Investment Corporation (OPIC) Overshooting Oversold Oversubscribed: Definition, Example, Costs & Benefits Oversubscription Privilege Oversupply Overtrading Overvalued Overweight Overwriting Own-Occupation Policy Owner Earnings Run Rate Owner Financing Owner-Occupant Owners' Equivalent Rent (OER) Oxford Saïd Business School (SBS)