MTE Why American? I trade options on FTSE futures-mostly credit spreads. As exercise can not happen till last day I get enough opportunity to roll it forward or close at a more favourable price. I mostly trade put credit spreads. I would like to understand your viewpoint. Thanks
It was not an opinion. The OP asked what style are futures options on the e-minis (S&P 500, Russell, Nasdaq). Was I correct in my assumption, polee2000?
Sorry I misunderstand but any way I would request your comments about american or european. -which is better. Thanks
You cannot say that one is better than the other, each has its pros and cons. For cash-settled indices it is definitely better to have European as you do not have a risk of early exercise and thus no risk of suddenly finding yourself in an unhedged unlimited risk position.
CME E-mini S&P 500 End Of Month future options use European-style exercise rules. The other CME E-mini future options are American style.
the reason i asked was that i couldn't find any information on CME.com with the IB's API what is the best way to compute Delta (rough approximation is fine) i usally hold my naked position into expiration