SK Hynix (SKHYV) +17% on debut — The South Korean memory chip giant raised $26.5 billion in the largest foreign IPO in US history, topping Alibaba's $25B record from 2014. The stock hit an intraday high of $176.34, 18.3% above its $149 IPO price, after being oversubscribed 7–8x. The company holds ~57% of the HBM market and is Nvidia's key high-bandwidth memory supplier.

Markets closed green across the board — All three major indexes...