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Why do you think a price of 78 bucks for SPY is a plummet? The 52 week low is 74.34, and with all the volatility we've been seeing, 78 isn't crazy at all. Thats like a 2 day move in this market. I'm not making any claim about whether vol is too high or too low right now, I'm just saying that...

Theoretically decimals gave customers a better price, and decimals have certainly lead to shrinking of market width. This is not good for day traders, but it certainly helps liquidity and the function of markets, so you can't lump decimals in here.

To actually defend Obama, his economic team is way too smart to listen to this monkey on CNBC right now. Summer and Geitner are waaaaay to smart to do something like this.

I don't understand why people don't get that they're going to pay this tax, and its more significant than they realize. Instantly the markets for stocks will widen out. Right now lets say AAPL is trading at 80, well if i have to pay a .25% tax, then my market for AAPL has to be 40 cents...

That article was written by Erik Meijer, who I believe is involved with the F# project at Microsoft. Many of the issues that he talked about concerning dynamically typed languages seemed to be addressed by F#. I would argue that a C#/F# combo will become the language of choice. From what I've...

"Why build your own? We've already built our own to replace Actant. Here is a little snipet:" Why? Support mainly. Customizability(is that a word?) more importantly. Any off the shelf product is going to be limited in how much of it can be customized. No matter what the vendor tells you...

We currently trade equity options at the CBOE here in Chicago. We're currently using AQTOR, but not entirely thrilled with it. Much like nitro, we've been mulling building our own system, but with limited technology resources, starting from scratch isn't really an option. It would take far too...

Does anyone out there use AQTOR or Orc Trader or Edge Specialists? We're currently using AQTOR, but thinking of possibly switching to one of the other two, and I'm curious what other people think of the products, particularly for equity options. I have plenty of opinions about AQTOR, but I'll...