**Rising Treasury yields near 19-year highs, resumed Fed rate hikes, and AI spending concerns have slowed the broader 2026 IPO market, producing multiple Q3 postponements despite a record year-to-date haul led by SpaceX.** As of early October 2026, smaller deals continue to price—such as recent biotech and SPAC offerings—while the visible pipeline features Anthropic targeting a mid-November listing at up to a $2 trillion valuation. OpenAI has shifted to 2027. Market-implied odds reflect this bifurcation: strong consensus for select mega-cap AI and infrastructure names that can clear elevated rate hurdles, tempered by uncertainty around valuation thresholds, post-IPO performance, and macroeconomic volatility ahead of the midterms and year-end. Traders monitor upcoming economic releases and any shifts in 10-year yields for signals on whether additional candidates can accelerate before December 31.