Definition of Parity
For convertibles, level at which a convertible security's market price equals the aggregate value of the underlying common stock; value/worth of the convertible bond considered only as an equity instrument (Conversion ratio times common price). See: Conversion value. For international parity, U.S.$ price of a foreign stock's last sale in an overseas market (Local currency stock price times forex rate times ADR ratio). For listed parity, condition whereby no party has floor priority, and matching thus occurs. For options parity, dollar amount by which an option is in the money. See: Intrinsic value.