Stock Market Update

[BRIEFING.COM] The S&P 500 (+0.05%) holds a narrow gain, little changed over the last half hour.

Briefly, S&P 500 constituents Enphase Energy (ENPH 48.09, +2.46, +5.39%), Advanced Micro Devices (AMD 116.95, +4.49, +3.99%), and Chipotle Mexican Grill (CMG 52.28, +1.63, +3.22%) pepper the top of the standings. ENPH rises as a Goldman note suggested proposed IRA changes were less damaging than feared, preserving clean energy incentives that support ENPH's growth, AMD announced a new $6 bln share buyback this morning, while CMG gains despite a dearth of corporate news.

Meanwhile, IQVIA (IQV 143.44, -7.24, -4.80%) is one of today's worst performers, under pressure despite a seemingly positive analyst fireside chat, where the CFO emphasized the company's strong performance and differentiated TAS business. However, the focus on TAS may have signaled softness in the core R&DS segment, raising investor concerns about broader market weakness. With no new catalysts or guidance updates, the commentary may have been interpreted as cautious, prompting the negative reaction.