NYSE had a test run in preparation on Twitter's IPO on Saturday; what have we learned about highly anticipated IPO's? One would assume that NASDAQ could have managed the incredible volume of the Facebook IPO, after all they are more or less totally automated and trades are done electronically. NASDAQ too had ran test runs for the Facebook IPO, an IPO so anticipated like Facebook couldn't have been underestimated, its not possible. Of course we will have to wait and see how NYSE will handle the Twitter IPO, but I have to wonder what else was done besides test runs, how has the NYSE prepared for the worst case scenario?