The Dictionary of Financial Terms

      O

Objective (Mutual Funds)
Odd lot
Offer
Official statement
Offset
Omnibus account
Open contracts
Open Interest
Open order
Open-end fund
Opening, the
Opening price
Opening Purchase
Opening Sale
Open-Outcry
Operating cycle
Operationally efficient market
Opinion shopping
Opportunity costs
Optimal portfolio
Optimization approach to indexing
Option
Option premium
Option price
Option seller
Option writer
Option-adjusted spread (OAS)
Options contract
Options contract multiple
Options on physicals
Original margin
Other Current Assets
Other Long Term Liabilities
Other Sources
Out Of The Money
Overbought\Oversold Indicator
Overfunded pension plan
Overlay strategy
Overnight repo
Overreaction hypothesis
Over-the-counter market (OTC)