I just noticed that TRAD, the symbol for tradestation was dropped from my scans as no longer valid. I did a quick google search and found that it was aquired in June! http://www.google.com/finance?cid=665640 I dont see anything posted on the TS support form and I dont see anythng about it here.
Interesting. I wounder how it will impact the customer base. It is a ok platform, but the transaction costs are way too high.