Daily Market Briefing

2026-07-31 · Money Checkup market briefing

# Energy and Biotech Diverge Sharply in Friday Rally; Semiconductors Weaken

Broad markets edged higher on Friday, with the Nasdaq Composite climbing 1.00%, the S&P 500 gaining 0.70%, and the Dow Jones rising 0.53%—but the day's story was less about synchronized strength and much more about a dramatic rotation away from semiconductors and into energy. The Russell 2000 small-cap index bucked the trend, falling 0.50%, signaling that growth-sensitive names are cooling while traditional value plays surge.

The energy complex dominated the day's gainers. Integrated oil companies surged an average of 20.7% as a group, with Chevron, ConocoPhillips, and Valero leading the pack. Oil and gas field machinery stocks weren't far behind, posting a 9.2% gain. This wasn't a narrow rally—the automotive retail and gas station sector added 11.8%, while paper stocks (benefiting from broader strength in commodities and cyclicals) climbed 13.9%. Paper names like International Paper and Rayonier Advanced Materials were among the session's winners. These moves suggest investors are rotating into "old economy" plays, betting on higher commodity demand or prices.

The flip side was brutal for semiconductor stocks. The entire group dropped 19.3% on average, with heavyweights like Nvidia, Broadcom, and Micron Technology all in the red. That weakness dragged the Nasdaq down despite its modest overall gain—a reminder that tech concentration still matters. Beyond chips, biotech and life-sciences names took a severe beating. Karyopharm Therapeutics (KPTI) crashed 72.6%, BioAge Labs (BIOA) fell 63.6%, and Myriad Genetics (MYGN) plunged 46.7%, suggesting trouble specific to that sector or perhaps profit-taking after a stronger run earlier in the year. Notably, Replimune Group (REPL) bucked the biotech weakness with a stunning 107.0% gain, making it the session's top mover.

On the filing front, several large-cap companies submitted their annual reports this week. Microsoft (MSFT) filed its FY2026 10-K on July 29 with a Health Score of 54.2, while Darden Restaurants (DRI) came in at 56.2. Worthington Steel (WS) posted the healthiest score of the group at 72.9, and Immersion Corp (IMMR) reached 80.7—strong reads from an operational standpoint. On the flip side, five companies remain flagged with going-concern audit notes, indicating substantial doubt about their ability to continue operations: Prospect Capital (PSEC), Entrada Therapeutics (TRDA), FS KKR Capital (FSK), New Mountain Finance (NMFC), and Bain Capital Specialty Finance (BCSF). These are situations worth monitoring closely if you hold exposure to the financial or biotech space.

Investors seeking to track which sectors are holding up best—and which are facing real structural challenges—may find Money Checkup's screener and Health Score rankings useful for sorting through the divergence. Today's action underscores how critical sector positioning has become in this market.