Options on Futures are significantly different than options on equities. The segment of Closing the Gap - Futures Edition” from January 29, 2016, “Options on Futures” explained these intricacies. The primary difference is how the various Option Greeks impact options on Futures versus those on stocks and ETFs. So what are the differences?
The multiplier for Greeks for options on equities is 100 (unless the underlying is undergoing something like a split) because each option is for 100 shares of stock. As an example, an at-the-money call would have a Delta of 0.50 and multiplying this by 100 would provide the share equivalence of 50. There is no standard multiplier for Futures options. Different contracts have different sizes. All Soybean contracts have the same multiplier but there is a different one for Soybean Oil.
Even in similar vehicles such as the S&P 500 ETF (SPY) and the E-Mini S&P 500 futures (/ES) there is a difference. A 1 point move in the /ES is worth $50. Since the value of 1 point in /ES is $50, selling a 16 Delta put in /ES is equivalent to being long 8 Deltas (0.16 x $50). Selling the same 16 Delta put in SPY would result in being long 16 Deltas. A table displayed the differences between SPY and /ES for the just mentioned Delta along with Gamma, Theta and Vega. A different table highlighted the difference in the resulting 8 Deltas in the /ES versus the 16 for the SPY. Another set of tables did the same for US Treasury Bond Futures (/ZB) and TLT (Bond ETF). The difference was 16 versus 160 there and any resulting changes reflect this initial disparity too.
Watch this segment of Options Jive with Tom Sosnoff and Tony Battista for the valuable takeaways and a better understanding of how the option Greeks impact Futures option and equity options differently because of the different multipliers.
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