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Thanks for the heads-up. ISE also has rules against non-memebers engaging in market-making (i.e. a lot of two-sided day trading). My guess is that the more electronic our exchanges become the less of this type of rules we'll see. These rules are very hard to enforce and only egregious...

Thanks for the reminder, Gene. Do you know if the european exchanges have the same restriction? As I remember the ISE rules, they require every trade to originate through a "human element", which, it seems to me, pressing the "ok" button would satisfy. the way the electronic trades come in on...

yes, i hope i can come up with better analytics than the garden variety. good inexpensive data and execution API is what i am shopping for.

Thanks for reply. I'd like to get transactions, i.e real-time trades (size, price & exchange), also in the API, and quotes by exchange. I want to take care of the analytics myself. I'll check out the riskbox though. Vitaly

People, Have you any opinions/comparisons of Internet datafeeds of options real-time data? I need an API with transactions and markets. I also want an API through which I would send trades. Have you any experience with that? I know one can get it all at serious $$$/month -- I work for a...