We now have a better idea than ever before about what is driving stock price momentum.

The disposition effect plays a very important role in explaining this stock momentum.

There's nothing special about a stock price six months or a year ago. Investors want to make sure that the current price is high relative to what they paid for it.

We found that it is a type of psychological bias on the part of many investors that seems to drive momentum. Investors tend to hold on to their losing stocks too long and sell their winners too quickly. This triggers momentum.

She doesn't even know how lethal she is hitting the 3 and driving. But, sometimes she's a sophomore and it gets into her head a little bit.

We knew who the individual was. We knew the type of vehicle he was driving. He went by the location where we were standing, where he had previously dumped all the trash.