NVIDIA has filed with the U.S. Securities and Exchange Commission for a seven-tranche note offering; issuance size not disclosed.

美光科技(MU.O)股價在盤前交易中上漲7.5%；至少有兩家券商上調目標價。

Tungsten hexafluoride (WF6), a key deposition gas for memory and advanced logic chips, has seen sharp price gains as some overseas capacity exited and downstream memory-chip expansion widened the supply gap. An analyst expects 5N-grade WF6 to average roughly 1,760 yuan/kg in June, up about 236% YoY, and cites sustained memory demand as the core support. A Shanghai specialty-gas producer reported a surge in helium demand; factories are running two shifts yet remain undersupplied, and buyers report prices moving daily with risk of immediate unavailability.