The Dow turned positive on Friday, helped by a run-up in Bank of America Corp , while the S&P 500 and Nasdaq trimmed losses as investors snapped up shares of biotechnology and healthcare companies.

The Dow Jones industrial average <.DJI> edged up 8.16 points, or 0.09 percent, at 8,779.08. The Standard & Poor's 500 Index <.SPX> was off 1.66 points, or 0.18 percent, to 943.23. The Nasdaq Composite Index <.IXIC> gave up 16.24 points, or 0.87 percent, at 1,846.13.

(Reporting by Leah Schnurr; editing by Jeffrey Benkoe)