Palo Alto Networks Inc PANW Acquisition of Koi Establishes FirstofItsKind Agentic Endpoint Security Category Is Cogent Bio COGT stock exposed to downside movement Overhead Buying 20260427 VNOM Viper Energy posts narrow Q4 2025 EPS beat shares dip 038 percent on tepid investor sentiment The Trade TTD Stock Institutional Buying Advances 20260427 Exponent EXPO Stock Is It Testing Key Levels Steady Decline 20260427