FactSet Research Systems is trading 4.61% up at $289.99 after an unclear, potentially flow-driven after-hours move with no confirmed fundamental catalyst.

  • It rose 0.10% to $277.22 during the September 15, 2026 regular session; no major company-specific announcement or earnings release was identified.
  • Next scheduled quarterly results are September 30, 2026; Investor Day is scheduled for November 10, 2026.
  • Broader markets were weaker, so global sentiment does not clearly explain the outperformance.