The market took a break as politicians kept squabbling over the fiscal cliff Wednesday, but more stocks rose and joined the growing ranks of leaders. The S&P 500, coming off back-to-back gains of nearly 1.2% each, fell 0.8%. The NYSE composite cooled 0.4%. Volume on the Big Board declined 1, a sign that institutional selling wasn't intense. The Nasdaq lost 0.3% after rising 1.3% and 1.5% in the prior two sessions. Oracle (ORCL), which posted