Stock Market Update

[BRIEFING.COM] There has been a bit of an about-face in the underlying market action today. Recall that yesterday's trade featured the outperformance of the mega-cap stocks and the underperformance of the "rest of the market." That dynamic was evident in the Vanguard Mega-Cap Growth ETF (MGK 83.54, -0.50, -0.60%) finishing up 2.0% and the equal-weighted S&P 500 finishing flat.

Today, the MGK is down 0.6%, and the equal-weighted S&P 500 is up 0.2%. The latter isn't a big move in an absolute sense, but it is reflective of the ongoing rotation that has been a hallmark of the enduring bull market.

Breadth figures show advancers with a 7-to-6 lead over decliners at the NYSE. At the Nasdaq, decliners lead advancers by a 13-to-8 margin.