Reported OpenAI IPO Delay Hits AI Stocks, Kioxia Plunges 12%

OpenAI, the developer of ChatGPT, is widely seen as a key barometer of funding momentum and valuations in the AI industry. A delay to its IPO could weaken investors’ near-term growth expectations for the AI supply chain and weigh on related chip and memory stocks. Japanese NAND flash memory maker Kioxia has consequently become a focus of selling pressure.

As of July 20, 2026, reports that OpenAI was considering postponing its initial public offering until 2027 had triggered selling in AI-related stocks, sending Kioxia shares down 12% in a single day. Kioxia had previously said it was considering a stock split and evaluating a U.S. issuance of American depositary receipts, or ADRs, but those plans failed to offset concerns over a possible change to OpenAI’s listing timetable.