Quote from Cache Landing:
SPX options are cash settled and therefore DO get 60/40 treatment. SPY don't get the beneficial treatment though. That is another consideration for trading them. I used to prefer them because I could usually get much better fills, but after comparing all the differences (including tax treatment) I've started leaning heavily toward SPX. I agree with OC in that SPY/XSP make failry good hedges if used properly.
Quote from Cache Landing:
SPX options are cash settled and therefore DO get 60/40 treatment. SPY don't get the beneficial treatment though. That is another consideration for trading them. I used to prefer them because I could usually get much better fills, but after comparing all the differences (including tax treatment) I've started leaning heavily toward SPX. I agree with OC in that SPY/XSP make failry good hedges if used properly.
Quote from Arb Under Par:
When comparing the SPY to the SPX, don't forget that there is a dividend built into the price of the SPY's. It's not exactly 1/10th the value of the SPX.
Mo, I don't think that you get 60/40 tax treatment trading options on the SPX cash index. I could be wrong, but I think it's only for options on the futs.
Cheers!
Quote from ktm:
Being cash settled has nothing to do with 60/40 treatment. The 2000 Commodity Futures Modernization Act provided 60/40 treatment for certain commodity regulated products, regardless of time held. Section 1256 of the IRS code further delineates those products which are eligible. While broad based indexes are included, I believe that only those broad based indexes regulated as futures (and options on the same) are eligible - therefore SP but not SPX. SPX is regulated as a security.

Quote from ktm:
Being cash settled has nothing to do with 60/40 treatment. The 2000 Commodity Futures Modernization Act provided 60/40 treatment for certain commodity regulated products, regardless of time held. Section 1256 of the IRS code further delineates those products which are eligible. While broad based indexes are included, I believe that only those broad based indexes regulated as futures (and options on the same) are eligible - therefore SP but not SPX. SPX is regulated as a security.