Large Funds are momentum players typically so they tend to buy on strength and sell on weakness. As a result 20 and 40 day highs and lows tend to be their entry and exit points. They are basically the accelerators of the trend, so when we have a situation like this with an extended move, if we get pullbacks to those levels, we often see them exit at these levels. Just like anything else, nothing is 100% but in general this is how they roll.
