Korea Optical & CPO Value Chain — Only OE Solutions (138080.KQ) Is Truly Close to CPO; Six of Seven Names Are Up +300–900% YTD With Earnings That Haven't Followed
Haesung DS (195870.KS) — Korean Lead-Frame #2 Pivoting to AI Heat-Spreader Second-Source: 1Q26 Margin Shock, DDR5 Utilization, and Why the Re-rating Sits in Multiple Compression, Not Revenue