NRG Energy is trading 4.11% up at $127.40, following its August 17 close of $122.37; no fresh August 18 company-specific announcement, earnings release, or analyst action clearly explains the pre-market gain.
- The latest identifiable corporate catalyst remains the August 4 earnings update, which reaffirmed 2026 guidance.
- The update highlighted a Texas data-center power project but is too dated to establish direct causation.