For some, the sky is falling, whereas for others, a great company is going cheap. There's a lot of it around lately. Some will say OMG 2 millions shares dumped into the close, but someone else bought those 2 million shares. The market is not a good guide to company valuations.
Seems not so long ago everything was overpriced and it was a gamble buying anything, but now, it's the opposite and there's long term value everywhere.
Perspective is everything with investing, not so much for trading.