From Zero Hedge:

When Citi’s note exposing DB’s undercapitalization came out, it had precisely zero impact on the price of DB stock. Why? Because as we said above, capitalization – and solvency – tends to be a largely worthless, pro-forma concept. However, when Bloomberg reported today that select funds have withdrawn “some excess cash and positions held at the lender” the stock immediately plunged: the reason is that this had everything to do with not only DB’s suddenly crashing liquidity, but the pernicious feedback loop, where once a source of liquidity leaves, the departure tends to spook other such sources, leading to an outward bound liquidity cascade. Again: just ask Lehman (and AIG) for the details.