A pretty miserable day for the major indexes failed to trigger sell signals among IBD 50 stocks. Only four stocks on the elite list of growth names managed gains, and those gains were small as the Dow Jones industrials, the S&P 500 and the Nasdaq all lost more than 1%. Volume was above average across the board. For the week, the IBD 50 for the week rose 0.3% vs. a 1.4% decline for the S&P 500.