I have been using Zecco.. as I usually like selling naked puts/calls.. they worked fine for as long as my equity requirements were 50K.. but now.. they raised it to 250K.. they cited that the market volatility is the reason for this tightening. restrictions.! i am moving to tradeking.. atleast 100K there. for calls and 25K for puts. . i hope they have not increased can you guys tell me who else offers naked puts/calls writing for the least amount of equity.