Option-Adjusted Spread (OAS): (1) The spread over an issuer's spot rate curve, developed as a measure of the yield spread that can be used to convert dollar differences between theoretical value and market prices. (2) The cost of the implied call embedded in an MBS, defined as additional basis-yield spread. When added to the base yield spread of an MBS without an operative call produces the option-adjusted spread.

 

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Option-Adjusted Spread (OAS): (1) The spread over an issuer's spot rate curve, developed as a measure of the yield spread that can be used to convert dollar differences between theoretical value and market prices. (2) Th . . . View Full Definition

Spread (Or Straddle): The purchase of a futures contract of one delivery month against the sale of another futures delivery month of the same commodity: the purchase of one delivery month of one commodity against . . . View Full Definition

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Spread Income: (1) The gap between bid and ask prices of a stock or other security. (2) The simultaneous purchase and sale of separate futures or options contracts for the same commodity for delivery in di . . . View Full Definition