The correct word should be "halted" not "suspended." It was temporary and required. The halt actually STOPPED Twitter's stock price from climbing. It shot up 11% in 5 min. Halt. And it ended the day in the red. That's a good thing, unless you're holding stock in Twitter. But it is important to note that there was a halt, because that halt was caused by fuckery attempts to blast up the price knowing that a dump was coming... Insiders who knew @Jack was leaving, which would likley cause some selling, which eventually did happen right after the halt lifted.