Lackluster stocks are trading back in the positive, with healthcare pacing gainers and energy lagging, and with many traders looking to see if the Dow can clear some resistance. At midday, the DJIA +0.2% to 10,705; S&P 500 +0.1% to 1,147; Nasdaq +0.3% to 2,315. Crude -0.1%. Natural gas -3.5%. Gold -0.3%.