Fastly is trading 4.64% higher at $23.09 on October 21, 2026, with no clearly verified company-specific announcement explaining the move. - One report links the rise to Investor Day targets and AI security products, but the event was held on September 22 and does not establish a fresh session catalyst. - The Nasdaq is up 0.46%, below the stated threshold for a strong same-direction market explanation. - Trading volume was not available in the provided context or sources.