Crowdstrike is trading 3.4% higher at €217.35, moving alongside strong risk-on sentiment on September 17, 2026. - The S&P 500 is up 0.93% and Nasdaq Composite 1.41%. - The move follows the Federal Reserve’s September 16 rate decision and easing inflation concerns. - No new company-specific catalyst clearly explains the move; recent AI-security enthusiasm and partnership news remain supportive background factors.