Bank of America (NYSE:BAC) (NYSE:BAC) the biggest percentage loser among Dow Industrial stocks as one influential analyst said it was time to sell. And that’s certainly what investors were doing today, sending shares down more than 5 percent. Calyon Securities banking analyst Mike Mayo said the banks’ first quarter results this week were quote, likely as good as it gets, end quote. So he downgraded his view from “under perform” to “sell” with an $8 price target. BAC closed at $8.36 per share tonight.