With the Federal Reserve meeting this week, stocks could be volatile, and technical analysts say the S&P 500 looks increasingly set for a retest — and possible break — of its June low. Stock charts have seen a lot of damage recently, and some technical strategists are becoming more pessimistic in the near term. In the past week, the S&P 500 declined 4.8%, closing at 3,873, in its worst weekly performance since June.













