Losses for health care companies and banks left stocks lower, although a late push for technology and industrial companies helped the market avoid a steeper decline, the AP reports. The Dow Jones industrial average managed a tiny gain, thanks to a rise in Boeing, erasing an earlier loss of 393 points. AIG slumped 5.3% and prescription drug distributor Cardinal Health plunged 21.4%. Tesla fell 5.5% after reporting a big loss. Investors were puzzled when CEO Elon Musk mocked questions from analysts during the company's conference call. The S&P 500 index slid 5 points, or 0.2%, to 2,629. The Dow edged up 5 points to 23,930. The Nasdaq fell 12 points, or 0.2%, to 7,088. (More stock market stories.)