The Complete Semiconductor Playbook — AI Supercycle 2026
The AI trade is no longer one ticker. It’s a full stack. Here’s every layer:
💾 MEMORY
$MU · $WDC · $STX · $SNDK · $AMAT · $LRCX
→ HBM4 = the new oil. Not a commodity anymore. Strategic infrastructure.
🔌 CONTROLLERS
$RMBS · $SIMO · $ATOM · $MCHP · $ADI · $TXN
→ The traffic cops of every AI system. Overlooked. Undervalued. Critical.
📦 PACKAGING / TESTING
$AMKR · $FORM · $CAMT · $ONTO · $COHU · $ACMR
→ CoWoS. HBM stacking. Chiplets. This is where chips become systems.
🧠 NEXT-GEN MEMORY
$MRAM · $GSIT · $NVEC · $NLST · $CEVA
→ Beyond DRAM. Early-stage. Asymmetric upside when the cycle arrives.
🌐 OPTICAL / INTERCONNECT
$LITE · $AAOI · $COHR · $CIEN · $MRVL · $GLW · $MTSI · $TSEM · $POET · $LWLG · $FN
→ The hottest sub-sector in semis right now. 800G → 1.6T. CPO is the next arms race.