Five9: I'm Buying The AI Growth Reacceleration

Five9, Inc. receives a high-risk Buy rating due to discounted valuation, improving cash flow, and accelerating AI-driven subscription revenue growth. FIVN's Q1 2026 revenue beat expectations at $305M (+9% Y/Y), with AI revenue up 68% and now 13% of subscription revenue. Profitability improved: adjusted gross margin 64% (+200 bps Y/Y), adjusted EBITDA $74M (24% margin), and free cash flow $49M (16% margin).