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Triple Witching Day

The third Friday in the months of March, June, September, and December when U.S stock options, index options, and futures…

Trinomial Model

An option pricing model which is similar to a binomial model, but with three possible branches at each node instead…

Triple Witching Hour

The last hour before the market closing in which options and futures on stock indexes expire on the same day.…

KOKI

An acronym for knock-out, knock-in; a combination of barrier events (in relation to a barrier option, specifically, a double barrier...

Long Index Call

A long call option on an index where a trader can profit from a rise in the price of the…

Long Diagonal Put Spread

A diagonal put spread that involves the selling of a given amount (one or more) of near-month out-of-the-money put options and…

Risk-Free Rate

The rate of interest which can be earned without bearing any risks. The rates on Treasury bills and Treasury bonds…

Roll Up and Out

An option-related strategy that is based on the replacement of a position by closing out one option with a near-month…

Reportable Positions

The number of open contracts at which a market supervisory authority (like the CFTC in the US) specifies when an…

Put Calendar Spread

An option trading strategy which involves selling a near-month put and buying a far-month put, with the strike prices across...