NEW YORK (MarketWatch) — A late-stage rebound in U.S. stocks was reversed and indexes ended Wednesday’s choppy session lower, after ECB said that it is lifting a waiver on using Greek debt as collateral. The main benchmarks spent most of the session in the red, as a plunge in oil prices and less-than-stellar economic reports turned investors cautious. The Dow Jones Industrial Average erased a 110-point gain and finished marginally higher, up 6.62 points at 17,673.02. The S&P 500 SPX, -0.42% closed 8.54 points, or 0.4%, lower at 2,041.49. The Nasdaq Composite COMP, -0.23% ended the day down 11 points, or 0.2%, at 4,716.70.