SK Hynix shares rally 13% after US tech firms signal strong AI spending plans

Shares of SK Hynix jumped to a record high on Monday, lifted by foreign buying after major U.S. tech firms signalled stronger AI data‑center spending. SK Hynix rose about 12.5% (intraday up ~13%), outperforming Samsung Electronics and the broader market, as investors priced in sustained memory demand and higher chip prices. Bank of Korea commentary echoed company forecasts that the current chip boom may last longer than previous cycles. The article cites combined AI outlays from large U.S. tech companies set to exceed $700 billion this year (up from ~ $600 billion), with Microsoft, Meta and Amazon raising capital expenditure plans — a bullish catalyst for semiconductor names and the tech sector.