By comparison, traditional options trading of stocks accounts for 20% of the market cap of the S&P 500 at the Chicago Board Options Exchange (CBOE), EDG said. “When you think of all the other [S&P 500]-like products including [exchange-traded funds], SP Minis, etc., you can see that bitcoin options have multifold growth ahead of it,” EDG’s quant developer, Marcin Maksymiuk, told CoinDesk.