There are 3 areas the market has been chopping around in since November 10th - 3960, 3980, and 4k. Any one of them can be a resistance point where the sellers come in. Above 4k on a daily close, and 4100 would likely be next. Probable paths are shown. I'm still thinking a sell down to 3770 into December makes sense right now but 3900 will be a support zone. It could also just chop around until Wednesday - there's an enormous amount of data out on that day and also FOMC minutes at 2pm Wednesday. Will update if things get clearer. Good luck!