New York, May 9 (BridgeNews) - U.S. stocks pulled back amid weakness in the chip and networking sectors after Cisco Systems (CSCO) said visibility is "extremely challenging." Still, traders said losses in the market were fairly muted and that stocks are still consolidating after recent strength. The Nasdaq closed down 41 points, or 1.88%, at 2157. The Dow was down 16 points to 10,866 and the S&P 500 was down 6 points to 1257.