Stock Market Update

[BRIEFING.COM] The S&P 500 (-0.3%), Nasdaq Composite (-0.9%), and DJIA (+1.2%) sit a touch off of session highs at midday. 

The health care sector (+1.1%) is among the top-performing S&P 500 sectors today, moving into positive territory for the week after what has been a rough start to December. 

The sector's largest component, Eli Lilly (LLY 1016.62, +22.98, +2.31%), is trading higher after reporting positive topline results from its Phase 3 TRIUMPH-4 trial of retatrutide, which delivered unprecedented weight-loss efficacy.

Elsewhere in the sector, managed care names such as Centene (CNC 40.84, +2.17, +5.61%), Humana (HUM 268.12, +11.46, +4.47%), and Molina Healthcare (MOH 167.06, +6.54, +4.08%) trade sharply higher.