
SK Hynix’s HBM4, Nikkei 225, Kospi, Nifty 50
Atlantide Phototravel | Corbis Documentary | Getty Images Shares of SK Hynix jumped Friday after announcing that it had finished developing HBM4, the latest generation of high-bandwidth memory seen as vital for artificial-intelligence applications. Its shares rose over 7% to hit the highest since 2000 as of 9.40 p.m. ET Wednesday. Elsewhere in Asia, markets…