You might want to check the volume today. There have been several days recently when the volume was over the 30 day average. BBT stated recently that they were buying back stock. I'm not sure this is the reason, but volume definitely moves stock prices and it might be a determined move on management's part to move the stock price up as it is getting closer to their year end.
The buyback by SEC rules is handled through a third party firm and can't occur during the first 30 minutes of the trading day or at the end. The program does support the stock in a stable market but other factors move it up (like the interest in banks since the BAC/Fleet merger).