Lately, with the volatility I'm sure there are some big winners out there. My biggest is not really so big. Only 641% When I do well in a week I like to take a little extra risk on exp. Normally I trade expiration regardless. I've been trading Bidu exclusively( a little GS) for a few months and have a good feel for her. On thurs Aug 4(or there abouts) she rallied a tad and bought some puts ( about $3 or 4 OTM) around close. She gapped down the next morning. Bought @.17 sold @ 1.26. I've never seen options move so fast. Someone sold their puts for 5.20 a few milla seconds before me. They went from 5.20 to .80 in a blink of an eye. I was happy with the 641% but I was extremely disappointed I was too slow to capture more. I use TDA, maybe thats my problem.