Vistra is trading 4.06% down at $140.19 on August 18, 2026, as rising 30-year Treasury yields near 5.33% pressure rate-sensitive utility and power infrastructure stocks.

  • The Nasdaq and S&P 500 are also lower as broader market weakness intensifies.
  • No clear new company-specific announcement or downgrade explains the intraday decline; recent earnings guidance was reaffirmed.