Five straight dips without a buyer and suddenly you’re talking about serious money. Why won’t the selling let up? Traders hoping for a midweek respite from what has become the worst five-day lurch in stocks since April were slapped awake in the first hour as the S&P 500 plumbed its biggest one-day drop in four months. Among other things, they saw momentum names swooning 3 percent, a rout in the NYSE advance-decline line and small caps slip below their 200-day moving average. With the S&P 500 down 2 percent at 2:52 p.m. in New York and the Cboe Volatility Index up for a fifth day, the longest streak since January, ... (full story)