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Just. Wow.

I'm particularly bored today. http://postimage.org/image/1raz6dtk4/

Looks like there were 8 fills at 23.59 within that second for a total of 2700 shares. You should be fine. http://postimage.org/image/11l9fu7pg/

http://papers.ssrn.com/sol3/papers.cfm?abstract_id=1156620

You're selling vol without realizing your selling vol. If you want to short vol, why not hedge with the deltas and manage your risk. The way you propse, you're one gamma spike away from blowing up.

0.00000000000000000000000000000000

How big of an account are you talking? If it's worthwhile, talk to Newedge, Penson, MFG - any of the big houses - and you'll get margin and global access.

RTS charges $2800/mo fee + exchange fees for their platform.

Yes, market maker, mostly equity options from what I understand.

Talking to www.rtsgroup.net - not sure how their services are yet.

Market making firms like SIG are almost exclusively engineering/math majors.

DRW, Optiver, CTC, Wolverine, Infinium, Capstone, Peak 6, SIG...

Congress and Mr. Levin should be educated on what exactly a market maker does.

Actually, you're right. BIDU and YOKU are both single-listed DRs. http://www.adrbnymellon.com/single_listed_dr.jsp

Volume on all the TOCOM commodities are heavily weighted in the backs. Regulation/tax/margin issue my guess.

One gamma spike and you're dead. Good luck.

Through which broker are you getting access to TOCOM?

They were IPOs and they are ADRs.

Not sure how many of these are still active but they're ADR issues in the last 12 months. Agricultural Bank of China ACGBY Alibaba.com ALBIY Ambow AMBO AutoNavi AMAP BCD Semiconductor Manufacturing BCDS Bitauto BITA Bona Film Group BONA Camelot...