Rubrik (RBRK) Stock Before the Bell on December 8, 2025: AI Security Breakout, Earnings Shock, and What Traders Should Watch
Rubrik, Inc. (NYSE: RBRK) heads into the U.S. stock market open on Monday, December 8, 2025, riding one of its sharpest rallies since listing. After a blowout fiscal Q3 2026 report and a flurry of AI‑related product and marketing announcements,