The Russell small caps (RUT) just blasted through key resistance today with gusto (1600), so a good sign for the overall markets.
The RUT has lagged for some time, and still needs to get to the 1750 area to make a new high, but if it had started to seriously sell off then that could be ominous for the broader indices.
The Russell had hit a wall since Feb while the S+P, DJIA and Nasdaq all went on to new highs, which was threatening to create a divergence. The small cap index is viewed as a good gauge of investor's general appetite for risk.