Can the market go lower? Of course it can. But from a risk reward standpoint, I find it difficult to sell short at these levels. PNC, STT, VSEC ; nonetheless, were all down big yesterday.
Summary: Stay on the sidelines. If you must trade, trade small and to the short side.
Market: In Correction
Sectors (short): Finance related, insurance
Stock (short): AAPL, MA, BLK