The Dow and the S&P 500 briefly turned negative on Tuesday, weighed by a sell-off in financial shares following news of stock offerings by major banks seeking to raise capital, including JPMorgan .

The Nasdaq trimmed gains to trade near break-even. The KBW Bank index <.BKX> shed 2.3 percent.

The broader market came up against critical resistance a day after the S&P 500 hit a key technical milestone, finishing above its 200-day moving average for the first time since December 2007.

The Dow Jones industrial average <.DJI> was up 6.19 points, or 0.07 percent, at 8,727.63. The Standard & Poor's 500 Index <.SPX> was down 0.29 points, or 0.03 percent, at 942.58. The Nasdaq Composite Index <.IXIC> was up 3.41 points, or 0.19 percent, at 1,832.09.

(Reporting by Ellis Mnyandu; Editing by James Dalgleish)