What are spy options 1256 contracts and how do they differ from other types of options contracts?

Spy options 1256 contracts are options contracts based on the SPDR SP 500 ETF Trust (SPY) that fall under Section 1256 of the Internal Revenue Code. These contracts differ from other types of options contracts in that they are subject to different tax treatment, with potential benefits such as a lower tax rate on gains and the ability to carry losses back to previous years.