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One thing to watch out for, is that some such API's don't actually encrypt anything. Consider this in conjunction with whatever ISP type you're using -- e.g., it probably won't be a good idea to use such an API on a shared T1 as your neighbors might be able to snoop your password and/or order...

Note that this is part of a liberal think tank's paper, not any US politician's proposal. But if such a clause were to get in (especially if there's no exemption for "professionals"), it could put US traders at a massive disadvantage worldwide, particularly in currencies and globally traded...

One word of warning on historical options data: beware misstated options contract specifications. Even the OCC itself often seems to disseminate incorrect data, especially with respect to strikes.

Why's that? I think they're one of the fairest CC companies (which, to some people, may not be saying much..:D..but still...) -- e.g., they don't charge their customers several % extra for foreign transactions the way most others do.

One other thing to watch out for -- sometimes if one hooks into a trading software API, there are registry entries that may refer to now-moved/-uninstalled software. You know this by the HKEY or whatever type messages but sometimes, cryptically, it just says that it can't find a file or...

That doesn't agree with what I heard; would you mind posting your source for this viewpoint? My impression was that a lot of "more traditional" Republicans opposed this on principle more than anything else.

This is causing me (and others, including Warren Buffet in GS) some short term losses, but if those losses allow us to create a new, nimbler, more efficient, and smaller Wall Street/banking system, than I think it's a good thing. I also think it's better to accept some losses now than to...

What are the terms of your guarantee, Arnie? I might be willing to take you up on that offer.

So the prudent firms (and their clients) that avoided the toxic junk get a new tax, and those who ran other firms into the ground get to keep the millions they received for doing so? The biggest problem with the bailout comes down to the question: who's going to pay for it? Good...

Good point, HooLee. The umbrellas out in sunny weather tell me this probably isn't the US; Americans just don't do that (although I must say it's a good idea for those wanting to limit their exposure to sun -- far safer and more effective than sunscreen!).

I remember an academic paper that concluded that companies that actively fight short sellers have significantly lower long-term returns than those that don't, other things being equal. So I can't see the present bans on shorting as a bullish sign for those companies included in it.

http://www.nasdaqtrader.com/content/technicalSupport/specifications/dataproducts/modelviewspec.pdf Yep, I guess it is only historical. So it remains to be seen what the OP was witnessing, if anything.

That's probably what I saw, then. Thanks.

I may be hallucinating this, but I recall reading an advert on NASDAQ's own site touting a service that allows one to see NASDAQ hidden liquidity if you subscribe to a very specific data service offered only by NASDAQ itself. The service (if it exists at all) doesn't show the INDIVIDUAL orders...

Full feed providers that offer a wide range of markets (good but expensive -- about $500/month for the cheapest): Reuters / Thomson Interactive Data Activ Financial DTN NxCore Spryware QuantHouse Essex Radez Infodyne

If you like VB, then you can always just build off of Sterling's AcriveX API examples. The free Visual Studio Express Edition works with that API. There's also a way to do this with Visual C++, apparently. If you don't like VB, then you can always write a "connector" app for Sterling and...

I've wondered about this, too. Certainly I've known people who've used MatLab effectively, and I know there's been discussion on this board about using R (the descendant of S), but SAS is notably absent.

Soros and Jones made most of their profit in equities? I don't know enough about them to answer this, although it's common knowledge that Soros' most famous trade was a currency trade (which is why he's known as "the man who broke the Bank of England"), and Paul Tudor Jones runs a CTA (that "C"...

Today doesn't seem very different from a lot of other days earlier this year..I'd imagine that most of the traders who would blow up or become discouraged under such circumstances already did so by February.

Mono is very cool, but doesn't ever seem fully compatible (and a full implementation) of Microsoft's latest releases. I hope it keeps getting better, but it may never get there completely, as is the case with Wine. If it works for what you're doing, great. The fact remains that Microsoft...