Family Office · CIK 0001536411

Stanley Druckenmiller

Duquesne

Stanley Druckenmiller runs Duquesne, a family office overseeing $4.22B in disclosed equity holdings (SEC CIK 0001536411). The latest portfolio (2025Q4) discloses 58 positions across 9 sectors, with the largest positions in NTRA, XLF and INSM. On a mark-to-market basis the tracked portfolio has returned 57.4% over the past year. OpenStocks tracks 40 consecutive quarterly snapshots for this manager — every position change, new entry, and exit is logged below.

Track Stanley's filings View holdings

Portfolio

$4.22B

Positions

Quarter

2025Q4

Filings tracked

1Y+57.4%Since filing+185.4%Full performance →

Quarter

2025Q4 2025Q3 2025Q2 2025Q1 2024Q4 2024Q3 2024Q2 2024Q1 2023Q4 2023Q3 2023Q2 2023Q1

Biggest winner since filing

COHRCOHERENT CORP

+438.0%

+$1.01B

Biggest loser since filing

CPNGCOUPANG INC

-29.7%

−$99.7M

Investment strategy

Stanley Druckenmiller is a mid-size fund. Disclosed equity book is between $1B and $10B.

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