Quote from spanish89:
But so apart from the plunge protection team and ecb what else does everyone think is keeping the market from being allowed to crash??
Keep in mind we've been in a bull market the last few years (and an extremely strong one at times). When a bull market switches to an actual bear market it tends to take a lot of time for the psychology to fully shift. For the last few years buying pullbacks and buying into weakness generally has worked very well whereas selling into weakness has been the wrong move.
Until those patterns stop working, traders/investors will keep doing the same stuff. For now there just aren't enough people bearish enough to be willing to sell aggressively as prices decrease.
Also more HFT firms might simply just favor long strategies in the current bull market because they've backtested the best. They might be the dominant players until real big sellers actually start feeling the need to act more aggressively.