"Investors' nerves are wearing thin as gridlock continues in the fiscal cliff negotiations"
I wouldn't expect much to change if a deal is made. Its already built into the current positions. If it isn't made, who knows how bad it could be, especially now with the president adding a new deadly issue with a January deadline.
January could be a very ugly month for the stock market.
Premarkets: Investors on edge over the fiscal cliff - Dec. 20, 2012