Premarket movers Mag 7 names are all lower (Apple -0.1%, Alphabet -0.7%, Amazon -1.3%, Meta -1%, Microsoft -1.1%, Nvidia -1.3%, Tesla -1.2%) Capricor Therapeutics (CAPR) rises 4% after Piper Sandler upgraded the biotech company to overweight, optimistic about the prospects for deramiocel, a treatment for Duchenne muscular dystrophy Charter Communications (CHTR) inches 1% lower after the cable operator said CFO Jessica Fischer will step down in mid October to relocate for another professional opportunity. Duolingo (DUOL) is up 6% after Evercore ISI upgraded the language-learning software company to outperform, noting investor opportunity following severe weakness in the stock, which is down more than 70% off a peak hit in mid-2025. Fervo Energy (FRVO) jumps 13% on a Wall Street Journal report that the geothermal company has signed a deal to sell power to Alphabet’s Google. GoPro (GPRO) soars 76%, with the stock set to extend gains after rallying more than 46% Monday. Kroger (KR) slips 1% after Citi analyst Paul Lejuez cut his price target on the grocer to a Street-low $57 from $61, and adds a downside 30-day catalyst watch on the stock ahead of Kroger’s Sept. 11 earnings report. Medtronic (MDT) gains 4% after the medical device maker boosted its organic revenue forecast for the full year. Micron Technology (MU) dips about 2% after the Taipei-based Liberty Times reported that Micron will deliver its highest incentive pay plan to its Taiwan-based employees in response to a potential strike by its labor union. NIO ADRs (NIO) slip 1% after the carmaker reported vehicle deliveries for August that were largely flat from the previous month. Robinhood Markets (HOOD) rises 2% after Morgan Stanley raised its recommendation on the exchange to overweight on growth from prediction markets.