[BRIEFING.COM] The S&P 500 (+0.13%) is in second place among the major averages, little changed over the prior half hour.
Elsewhere, S&P 500 constituents Celanese (CE 132.36, +4.63, +3.62%), FedEx (FDX 266.61, +7.82, +3.02%), and Generac (GNRC 150.90, +4.66, +3.19%) dot the top of the standings despite a dearth of corporate news.
Meanwhile, New York-based biotech firm Regeneron Pharma (REGN 1025.44, -66.54, -6.09%) piles on the losses, now down north of -10% over the last two sessions.