Samsung Electro-Mechanics: Why the Stock Doubled in 90 Days

Samsung Electro-Mechanics (009150.KS) doubled in 90 days — KRW 400k to KRW 680k+. This wasn't a generic AI-tailwind rally: FC-BGA entered Nvidia's Vera Rubin ecosystem as first vendor on Groq3 LPU, MLCC pricing cycle turned with Murata/Taiyo Yuden leading hikes, and the Vietnam KRW 1.8T expansion plus Sumitomo glass-substrate JV added a 2027+ growth axis. This is a structural transition: price-taker to price-setter, Samsung-dependence to Big Tech 6-customer mix, MLCC+FC-BGA optionality on glass interposer.