KEY POINTS
  • The S&P 500 and the small-cap Russell 2000 have diverged about 4 percentage points.
  • Two high-yield exchange traded funds that had been doing well this year are both down more than 1 percent this month.
  • There are some signs the market advance is becoming more selective.

Another day, another down open. There's a different tone to the markets in the last week or so.

It started last Tuesday, when an initial rally faded into a hard sell-off mid-morning. The next five trading sessions generally opened down.