OBV : See On Balance Volume. OCO : See One Cancels the Other. OECD : See Organization for Economic Cooperation and Development. Off Balance Sheet : Products such as Interest Rate Swaps and Forward Rate Agreement... Off-Shore : The operations of a financial institution which although physically loc... Offer : The price at which a seller is willing to sell. The best offer is the lowes... Offered Market : Temporary situation where offers exceed bid. Offset : The closing-out or liquidation of a futures position. Offsetting transaction : A trade with which serves to cancel or offset some or all ... Old Lady : Old lady of Threadneedle Street, a term for the Bank of England. OMIC : See Open Market Investment Committee. OMPC : See Open Market Policy Conference. OMR : ISO 4217 currency code, Currency used in Oman, called Rials. On Balance Volume : Abbreviated OBV. One of the first technical indicators that att... One Cancels the Other : Abbreviated OCO. A combination of two orders in which the e... Open Interest : The total number of outstanding option or futures contracts that ha... Open Market Committee : See Federal Open Market Committee. Open Market Investment Committee : Abbreviated OMIC. Committee established in 1923 ... Open Market Operations : Central Bank operations in the markets to influence exchan... Open Market Policy Conference : Abbreviated OMPC. Committee established in 1930 to ... Open Order : Buy or sell order that remains in force until executed or cancelled by... Open Position : The difference between assets and liabilities in a particular curre... Optimal options : Options that refer to the most favorable rate of the underlying c... Option : A contract conferring the right but not the obligation to buy (CALL) or to... Option Class : All options of the same type - calls or puts - listed on the same un... Option currency spread : A long currency option and an offsetting short currency op... Option Series : All options of the same class having the same exercise/strike price... Option writers : Option sellers. Options : An agreement that allows the holder to have the option to buy/sell a spec... Order : A customer´s instructions to buy or sell currencies. Organization for Economic Cooperation and Development : Abbreviated OECD. An internati... Original Margin : See Initial Margin. Oscillators : Quantitative methods designed to provide signals regarding overbought... OTC : See Over the Counter. OTM : See Out-of-the-money. Out-of-the-Money : A PUT option is Out-of-the-money if the exercise/strike price is... Out-of-the-money CALL : A CALL whose present currency price is lower than the strik... Out-of-the-money PUT : A PUT whose present currency price is higher than the strike... Outright Deal : A forward deal that is not part of a swap operation. Over Bought or Over Sold : See long and short. Over the Counter : Abbreviated OTC. The term used to describe futures and options n... Overnight : A deal from today until the next business day. Overnight Limit : Net long or short position in one or more currencies that a deale... Overnight Position : Trader´s long or short position in a currency at the end... Overnight position limit : A position kept overnight by traders.