Sometimes you hear about a "post options-expiration hangover". If that's what today is, I sure am feeling it. Now you know why I don't like markets that open strong. When they fade, it can turn ugly.
Small caps are taking it on the chin (-1.5%), but nearly all sectors are lower. Energy and commodities are down the most (-2.5%), followed by biotechs (-1.0%). The only sector that is higher are financials.