AI Infrastructure Stocks Slide as Korea's Biggest IPO of 2026 Craters 32% on Debut

South Korea's biggest initial public offering of 2026, a company tied to data-center buildout, dropped 32% on its first day of trading, according to a ZeroHedge report. The debut landed the same day investors were already selling shares of several US-listed AI infrastructure companies, including CoreWeave, Nebius and IREN, all flagged in Motley Fool coverage as names facing doubts about a slowdown in AI spending. The common thread across these stories is not a single bad earnings report. It's a question investors are now asking across the sector: are hyperscalers and cloud customers going to keep paying for data-center capacity at the pace the market has priced in? CoreWeave coverage specifically points to concerns about the durability of its business model, while Applied Digital commentary frames the stock as potentially undervalued precisely because the selloff may be overdone. What remains unresolved is whether this is a repricing of growth assumptions or the start of a broader retreat from AI-adjacent capital spending. The Korean IPO's one-day move is the sharpest single data point so far, but it's a new listing in a different market and may not generalize to US-listed infrastructure names with longer operating histories.