The results are good but the expectations for the bank meeting the return on equity target have been priced into the stock. Deutsche Bank has not yet addressed the issue of its new strategic step. They're relying too much on revenue streams that are highly volatile, for example fixed income.

The shares have done a lot in a very short time. Share gains of 30 percent in two months, plus raw materials costs still rising, could mean some investors will look to take profit in the near- term.

It's probably end-of-the week profit taking.

Investors see there's still some room for a hike in rates. Rising rates is bad for stocks in the short term.

When people hear the word explosion they sell on a reflex.