Dodging The September Slump: Inside The 2026 IPO Rebound

Christine Short 395 Followers Follow Summary 2026 is pacing toward the strongest IPO performance since the 2021 boom, logging 331 new filings and 280 completed offerings YTD, already exceeding full Q1–Q3 levels from 2025. Only 10 companies have withdrawn their IPO applications so far in 2026, a drastic drop from the 157 capitulation withdrawals seen during the 2022 rate shock. Anthropic’s rumored timeline shift into October is a tactical move to bypass September’s historical seasonality, inflation prints, and Fed rate decision, setting up a potential green light for mega-cap peers like OpenAI to follow before year-end. Getty Images There's no debating that 2026 has been a stellar year thus far for IPO activity, with 331 new filings YTD (as of September 8). Following two years in the deep freeze and a tepid, watching-and-waiting recovery, Wall Street's primary issuance desk is This article was written by Christine Short 395 Followers Follow Wall Street Horizon provides institutional traders and investors with the most accurate and comprehensive forward-looking event data including earnings calendars, dividend dates, option expiration dates, splits, investor conferences and more. Covering 9,500 companies worldwide, we offer more than 40 corporate event types via a range of delivery options. By keeping clients apprised of critical market-moving events and event revisions, our data empowers financial professionals to take advantage of or avoid the ensuing volatility.