I've seen breaks in stocks that you could never explain at all--no one could.

It wouldn't be possible to find out why they broke.

I've seen rises the same way.

My God, the rumors of the stock exchange! They beat the devil.

If they're going down in ordinary times some one is unloading, or they're rigging the market.
If they're going up--God knows times must be good or somebody must be buying--that's sure.