[BRIEFING.COM] The S&P 500 (+0.40%) is up about 23 points on Monday afternoon, little changed over the last half hour.
Elsewhere, S&P 500 constituents Carnival (CCL 21.91, +1.00, +4.78%), Albemarle (ALB 97.70, +4.19, +4.48%), and Amentum Holdings (AMTM 30.63, +0.98, +3.31%) pepper the top of the standings. CCL and ALB move higher despite a dearth of corporate news, while AMTM gains after being awarded a $490 mln contract from the U.S. Navy.
Meanwhile, Missouri-based managed care firm Centene (CNC 61.47, -2.75, -4.28%) falls to the bottom of the average as recent volatility continues following last week's earnings.