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    Options real-time data providers

    I am currently using cboe's Free Delayed Option Quotes. Does anyone know a good (reliable and reasonably priced) real-time stock and index options data provider? Thanks in advance.... :)
  2. B

    Options pricing model

    Which of the following option pricing model are most commonly used in trading US stock and index options? 1) Black-Scholes for American options (continuous dividends) 2) Cox-Ross-Rubinstein Binomial pricing algorithm 3) Barone-Adesi-Whaley / Quadratic approximation (continuous dividends)...
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