Patterson-UTI Energy is trading at $11.97, down 10.14%, amid a broad energy-sector sell-off as oil prices fell sharply on hopes for progress in U.S.-Iran talks.

  • Brent crude was reported down 7.1% on November 2; the stock’s decline exceeds the cited sector decline.
  • No clear company-specific announcement explaining the drop surfaced in the search.
  • The latest earnings-call context was constructive, with management citing scarce gas-powered frac equipment and premium pricing; this does not explain the decline.