The last time the Dow underperformed the S&P 500 by this great a margin was 2009

By Mark DeCambre

The stock market is enjoying a solid week so far, but investors might not know it by gauging the performance of the Dow Jones Industrial Average, which by a few measures is registering its widest divergence with its U.S. peers over a two-day stretch in years.

As of Tuesday’s close, the Dow DJIA was up 0.4% over the past two sessions, an otherwise respectable early start to a week, if not for the outsize performance of the S&P 500 index SPX up 1.8% week to date, and the Nasdaq Composite Index COMP , which is enjoying a two-day return of 2.5%, according to FactSet data.

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