The 13% stock market rally since early February has been led by a blistering 20% rally in the financial sector during that time as evidenced by the XLF:
The push this month to new highs has led the overall stock market's rise to new highs since the last, epic bear market (arguably) came to its conclusion in early March.
What I find interesting is that Bank of America, Wells Fargo and JP Morgan make up nearly a third of this popular ETF and the broader NYSE Financial Index has not performed nearly as well. In fact, while XLF pushed to new highs, its more diversified cousin failed to surmount its high of last October.
This means that the breadth of the rally is faltering as fewer stocks are pushing the indexes higher at this point. This key divergence between two indexes of the same sector suggests the current rally may be getting long in the tooth.