"Starboard Value wants to shake up TripAdvisor. The activist now owns more than 9% of the company and reportedly plans to nominate a majority slate of TripAdvisor board." Activist involvement, especially from a high-profile firm like Starboard seeking majority control, typically signals aggressive moves to unlock shareholder value (spin-offs, sale, or operational overhaul), driving the stock price up. LONG on the catalyst of activist intervention. The activist campaign could fail or become drawn out without immediate results.