Friday's partial trading delivered a final boost before holiday hangover-selling kicked in. As of yesterday there was and is plenty of room for profit taking in the Russell 2000; look to Fib retracements for pullback opportunities. One thing I had missed was the profit take warning in this index; the Russell 2000 has tagged the 14.3% and 12.3% push above its 200-day MA which is in the 10% zone of historic price action dating back to 1987 (see table at the end of this post).
Other indices haven't yet extended themselves so far. Profit taking, while expected, isn't as likely to be as extensive as for the Russell 2000.
The S&P has Fib retracements to look to as well.
The NASDAQ likely hasn't driven far enough beyond resistance to encourage significant profit taking, but it can't be excluded if sellers do make an appearance in other indices.
For today, look for additional profit taking in the Russell 2000 and other indices to follow.
Here's that table on historic price action: