Public SaaS companies down 50% in 6 months, terminal value repriced
The SaaStr.ai Index tracking 25 leading B2B software companies hit a 50.5% decline from October 2025 to April 2026. This is not a correction. The market has structurally re-rated software as an asset class, now trading below S&P 500 multiples for the first time ever. Two forces: AI capex displacing traditional software budgets, and substitution fear that agents will replace seat-based revenue models.