Ally Financial Inc.’s stock was up nearly 10% during the trading session on Friday — its best one-day rise in nearly a year — after the bank’s earnings beat Wall Street estimates and the bank agreed to sell its point-of-sale financing business to Synchrony Financial. Ally Financial ALLY, +9.63% said its fourth-quarter net income fell to $49 million, or 16 cents a share, from $251 million, or 83 cents a share, in the year-ago quarter. Fourth-quarter adjusted profit dropped to 45 cents a share from $1.08 a ...