The AI Investment Map: From Tokens to Megawatts

Damnang · Damnang’s Substack · September 01, 2026 at 16:31 · ⏱ 30 min read  | Read on Substack ↗
Summary
AI infrastructure constraints stack rather than rotate: HBM and advanced packaging still gate accelerator shipments, while power and grid now gate when new capacity can be turned on. The article argues that physical scarcity alone is not an investment thesis—only where supplier response is slow, qualified suppliers are few, substitution is hard, and contracts allow repricing do shortages become durable earnings power.
  • Hyperscaler capex is on track to exceed $700B in 2026, with Amazon guiding to roughly $220B, Alphabet to $195-205B, and Meta to $130-145B.
  • GE Vernova's gas equipment backlog and slot reservations reached 116GW against annual output targets of roughly 20GW in 2026, 24GW in 2028, and 30GW in 2030.
  • SK hynix holds a 56.4% share of HBM revenue in 1Q26; 2027 HBM bit shipments are projected to grow 50-60% and still fall short of demand.
  • CoWoS supply-demand gap is expected to narrow from roughly 20% to about 10% by end-2026, but 2027 demand could still leave a 10-20% shortfall.
  • The optical bottleneck is upstream: 200G EML lead times stretch beyond 2027, three firms hold 80-90% of InP substrate, and AXT signed an InP capacity reservation with Lumentum through 2031 with a $43.5M deposit.
  • NVIDIA invested $2B each in Lumentum and Coherent with multi-year purchase commitments; Lumentum passed $1B quarterly revenue and Coherent posted $2.05B, up 34% YoY.
  • Vertiv reported Q2 2026 revenue of $3.274B, up 24%, with adjusted operating margin at 22.6%.
  • The author's pricing-power screen is supply response time, qualified supplier set, substitution/workarounds, and contract structure; memory, light sources/InP, gas turbines, and transformers score highest.
Read time 30 min
Length 30,801 chars
Category finance
Ideas
Damnang Substack author, Damnang’s Substack
GE Vernova's gas equipment backlog and slot reservations hit 116GW against annual capacity of roughly 20GW, with new heavy-duty turbine orders running about three years to delivery and 2030 slots larg
GE Vernova's gas equipment backlog and slot reservations hit 116GW against annual capacity of roughly 20GW, with new heavy-duty turbine orders running about three years to delivery and 2030 slots largely booked. Risk: Factory throughput caps near-term volume growth, so if turbine capacity expands or interconnection delays normalize, pricing power fades.
Damnang Substack author, Damnang’s Substack
Vertiv reported Q2 2026 revenue of $3.274B, up 24%, with adjusted operating margin of 22.6%; the article frames thermal as an execution story where demand is proven and backlog conversion is the key v
Vertiv reported Q2 2026 revenue of $3.274B, up 24%, with adjusted operating margin of 22.6%; the article frames thermal as an execution story where demand is proven and backlog conversion is the key variable. Risk: Backlog conversion could slow, or competitive capacity could compress incremental margins.
Damnang Substack author, Damnang’s Substack
Lumentum passed $1B in quarterly revenue, pump laser shipments rose more than 80% YoY, EML lead times extend beyond 2027, and NVIDIA made a $2B investment with multi-year purchase commitments.
Lumentum passed $1B in quarterly revenue, pump laser shipments rose more than 80% YoY, EML lead times extend beyond 2027, and NVIDIA made a $2B investment with multi-year purchase commitments. Risk: CPO adoption could reduce pluggable transceiver and optical component dollar content; the article warns bandwidth growth is not the same as optical revenue growth.
Damnang Substack author, Damnang’s Substack
Coherent posted fiscal Q4 2026 revenue of $2.05B, up 34% YoY, and was named alongside Lumentum as a recipient of NVIDIA's $2B strategic optical investment and purchase commitments.
Coherent posted fiscal Q4 2026 revenue of $2.05B, up 34% YoY, and was named alongside Lumentum as a recipient of NVIDIA's $2B strategic optical investment and purchase commitments. Risk: Same CPO architecture risk as Lumentum, and the article notes company dispersion within the optical upcycle is wide.
Damnang Substack author, Damnang’s Substack
SK hynix disclosed a 56.4% share of HBM revenue in Q1 2026, and the article expects 2027 HBM bit shipments to grow 50-60% yet still fall short of demand, giving suppliers the stronger hand in annual c
SK hynix disclosed a 56.4% share of HBM revenue in Q1 2026, and the article expects 2027 HBM bit shipments to grow 50-60% yet still fall short of demand, giving suppliers the stronger hand in annual contract negotiations. Risk: Buyers can reduce HBM capacity per accelerator or reallocate system budgets, partially offsetting price-driven dollar content growth.
Damnang Substack author, Damnang’s Substack
TSMC's CoWoS capacity is expanding toward roughly 120-140K wafers per month, narrowing the supply-demand gap from about 20% to 10%, but 2027 demand could still double and leave a 10-20% shortfall; TSM
TSMC's CoWoS capacity is expanding toward roughly 120-140K wafers per month, narrowing the supply-demand gap from about 20% to 10%, but 2027 demand could still double and leave a 10-20% shortfall; TSMC remains the key packaging bottleneck. Risk: As packaging catches up, the bottleneck moves upstream to materials like ABF substrate, reducing TSMC's scarcity pricing even as volume grows.
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