Deposits

As much as $2.5 trillion, or nearly half of bank deposit growth since the crisis, may be attributable to the central bank's quantitative easing. If investors start drawing down on their accounts to buy back assets from the Fed, the trend could dampen liquidity at certain banks, add upward pressure on deposit prices and reshape M&A.

Citi is holding its first investor day since the financial crisis, plugging credit cards and its Mexican business; Morgan Stanley's market cap tops Goldman's for the first time.

Now that the Federal Reserve has raised short-term rates four times in the past 18 months, all eyes are on deposit costs as banks seek to keep pricing low and fatten margins. But that effort is complicated by the fact that banks must prepare for the unwinding of the Fed's balance sheet and consumers' rapid adoption of mobile deposits.

The FDIC is watching banks that use wholesale funds to support CRE lending. The warning comes as brokered deposit levels at community banks are at their highest level in nearly six years.

Net interest margins are on the rise and banks have the green light to return more capital to shareholders, but commercial lending and consumer credit quality remain trouble spots.