Tenable is trading up 4.14% at $40.59, alongside a stronger technology-market backdrop; no direct catalyst for the move is confirmed. - No clear company-specific announcement on October 21 explains the move. - The supplied market context has the Nasdaq up 0.59%; reports cite strong SpaceX and Super Micro results as lifting technology shares. - Tenable’s investor-relations page lists its next quarterly results for October 28.