13f-changes
Granular segment

Semicap materials

Semicap materials and equipment suppliers sell the tools, process-control systems, chemicals, and materials required to manufacture semiconductors.

Current reported exposure$71M
Tagged bought / added$71M
Tagged sold / reduced$0
Tracked funds1

This segment sits inside the physical and semiconductor supply chain that supports AI training and inference. The important question is not only whether AI demand grows, but where scarcity shows up: chips, memory, networking, power, sites, or specialized services.

For 13F analysis, the tag is meant to separate the specific bottleneck a company is exposed to from the broad AI label. That helps distinguish a direct accelerator supplier from a power-equipment company, a data center landlord, or a miner with a power portfolio that could be repurposed for HPC.

What it covers
  • Lithography, etch, deposition, and inspection tools
  • Materials, chemicals, and gases
  • Process control and metrology
  • Advanced packaging equipment
What to watch
  • Wafer fab equipment spending
  • Memory versus logic capex
  • China restrictions and demand pull-ins
  • Advanced packaging bottlenecks
Stanley Druckenmiller

Duquesne Family Office LLC

Stanley Druckenmiller · Q4 2025 filed 2026-02-17

1.6% of reported 13F $71M

Semiconductor equipment, materials, and process-control suppliers.

TickerNameValueInstrument
ENTG ENTEGRIS INC $71M SH
TickerActionValue
ENTG New +$71M