One-Cancels-the-Other Order (OCO)
What is a 'One-Cancels-the-Other Order - OCO' A one-cancels-the-other order (OCO) is a pair of orders stipulating that if one order is...
Offshore Portfolio Investment Strategy (OPIS)
What is 'Offshore Portfolio Investment Strategy - OPIS' A tax shelter product designed to create large, seemingly real losses to be used...
Omnibus Account
What is an Omnibus Account
An Omnibus account is a single account that is used to hold securities for multiple clients. The account is maintained...
Oil Field
DefinitionAn "oil field" or "oilfield" is a region with an abundance of oil wells extracting petroleum from below ground. Because the oil reservoirs typically...
Oil Services Industry ETF
What is 'Oil Services Industry ETF' A sector exchange-traded fund (ETF) that invests in companies engaged in providing services such as drilling...
Old Lady
What is 'Old Lady' An eighteenth century nickname for the Bank of England. The full name is the Old Lady of Threadneedle...
Oil Stabilization Fund (Iran)
What is 'Oil Stabilization Fund (Iran)' A government-controlled sovereign wealth fund managed for the government of Iran. The funds deposited with the...
Old-Age And Survivors Insurance Trust Fund
What is 'Old-Age and Survivors Insurance (OASI) Trust Fund' One of the two trust funds managed by the Social Security Administration, the...
Office Of Thrift Supervision (OTS)
What is the Office of Thrift Supervision (OTS)?
The Office of Thrift Supervision (OTS) is a federal regulator of savings and loan associations, savings banks,...
One-Cancel-All Order (OCA)
What is 'One-Cancel-All Order (OCA)'
A One-Cancel-All (OCA) order is a type of options order that gives the trader the ability to place multiple options...