Stocks staged a negative reversal Friday, a day after doing the exact opposite. The Nasdaq settled for a 0.2% gain after being up 1.1% early. The S&P 500 pocketed 0.5% of its early 0.9% pop. The IBD 50 ended flat. Volume ran higher across the board. Friday was an expirations day, which tends to lift volume. Friday’s bearish chart action contradicted Thursday’s bullish pattern. On Thursday, the indexes opened down and then wiped out the losses.