U.S. stocks closed virtually unchanged Wednesday, giving up strong early gains even as investors weighed reports about the Chinese flu outbreak.

The Dow Jones Industrial Average closed about 9 points, less than 0.1%, higher, at about 29,187, while the S&P 500 was up a point, less than 0.1%, at about 3,322. The Nasdaq closed up 13 points, or 0.1%, at about 9,384.

The Dow was dragged down by shares of Boeing which on Tuesday confirmed the 737 Max would not return to service until mid-year. Netflix, Inc. was one of tech's biggest losers, slumping nearly 4% after reporting quarterly earnings Tuesday.

Source : MarketWatch