13f-changes
Granular segment

AI foundry

Leading-edge foundry exposure is a direct way to express demand for AI silicon without owning only the chip designers. The economics depend on node leadership, advanced packaging, capex intensity, and customer allocation.

Current reported exposure$165M
Tagged bought / added$0
Tagged sold / reduced$62M
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
  • Advanced-node manufacturing
  • Advanced packaging
  • Large fab equipment ecosystems
  • Geopolitical diversification of fabs
What to watch
  • AI chip wafer starts
  • Packaging lead times
  • Capex discipline
  • Customer mix across Nvidia, AMD, Apple, and custom ASIC programs
Stanley Druckenmiller

Duquesne Family Office LLC

Stanley Druckenmiller · Q4 2025 filed 2026-02-17

3.7% of reported 13F $165M

Leading-edge semiconductor foundry exposure.

TickerNameValueInstrument
TSM TAIWAN SEMICONDUCTOR-SP ADR $165M SH
TickerActionValue
TSM Trimmed -$62M