More often than not, an indicator changes direction before the price. These phenomena are commonly referred to as bullish/bearish divergences, and have usually been very good predictors of impending price moves.
Yesterday, a number of breadth indicators registered slightly more bullish readings relative to last week. This is despite the market making a new low relative to last week, which is a bullish divergence. Yesterday could have been the bottom or we could see more divergences lasting a few more days.
At any rate, this means that less stocks are participating in the decline, which one would expect to see before an upward reversal in the index.