Family Office · CIK 0001536411
Stanley Druckenmiller
Duquesne
Stanley Druckenmiller runs Duquesne, a family office overseeing $4.5M in disclosed equity holdings (SEC CIK 0001536411). The latest 13F filing (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 210.5% since 2016Q1. OpenStocks tracks 40 consecutive 13F filings for this manager — every position change, new entry, and exit is logged below.
Portfolio
$4.49M
Positions
58
Quarter
2025Q4
Filings tracked
40
Capital flow per quarter
BuysSellsNet
Latest · 2025Q4
-$225K
Lifetime buys
$1.70B
Lifetime sells
$2.34B
Quarter activity
What changed in 2025Q1 — net new, added, trimmed, exited.
New positions12 names
- DOCUDOCUSIGN INC+1,074,655$87K
- CCCCCC INTELLIGENT SOLUTIONS HL+5,595,039$51K
- EQTEQT CORP+859,345$46K
- CZRCAESARS ENTERTAINMENT INC NE+1,548,420$39K
- TWLOTWILIO INC+362,155$35K
- COFCAPITAL ONE FINL CORP+197,670$35K
- ROKUROKU INC+493,600$35K
- BBIOBRIDGEBIO PHARMA INC+438,050$15K
- EXECHESAPEAKE ENERGY CORP+97,700$11K
- APPAPPLOVIN CORP+40,200$11K
- ARANTERO RESOURCES CORP+258,400$10K
- PIIMPINJ INC+108,475$10K
Added to14 names
- TEVATEVA PHARMACEUTICAL INDS LTD+5,882,350$90K
- TSMTAIWAN SEMICONDUCTOR MFG LTD+491,265$82K
- G3643JFLUTTER ENTMT PLC+359,375$80K
- INSMINSMED INC+775,580$59K
- LLYLILLY ELI & CO+32,640$27K
- YPFYPF SOCIEDAD ANONIMA+387,674$14K
- PCTPURECYCLE TECHNOLOGIES INC+1,772,342$12K
- N62509NEWAMSTERDAM PHARMA COMPANY+512,825$10K
- FCXFREEPORT-MCMORAN INC+259,200$10K
- BCSBARCLAYS PLC+630,450$10K
- CPNGCOUPANG INC+399,985$9K
- VRNAVERONA PHARMA PLC+114,500$7K
- + 2 more…
Trimmed17 names
- G7997RSEAGATE TECHNOLOGY HLDNGS PL−1,344,599$114K
- UALUNITED AIRLS HLDGS INC−675,120$47K
- PMPHILIP MORRIS INTL INC−246,987$39K
- COHRCOHERENT CORP−598,860$39K
- AMZNAMAZON COM INC−191,635$36K
- WWDWOODWARD INC−128,000$23K
- NTRANATERA INC−164,520$23K
- DALDELTA AIR LINES INC DEL−472,605$21K
- ASNDASCENDIS PHARMA A/S−106,320$17K
- KMIKINDER MORGAN INC DEL−571,185$16K
- BNBROOKFIELD CORP−294,300$15K
- 85205LSPRINGWORKS THERAPEUTICS INC−243,765$11K
- + 5 more…
Exited37 names
- SKAASKECHERS U S A INC−1,074,840$72K
- SLMSLM CORP−2,520,275$70K
- USX1UNITED STATES STL CORP NEW−1,610,040$55K
- WBDWARNER BROS DISCOVERY INC−4,657,650$49K
- VSTVISTRA CORP−283,355$39K
- MUMICRON TECHNOLOGY INC−408,885$34K
- KRESPDR SER TR−554,138$33K
- BWXTBWX TECHNOLOGIES INC−299,171$33K
- GEVGE VERNOVA LLC−99,750$33K
- G6700GNVENT ELECTRIC PLC−451,065$31K
- DFSEURDISCOVER FINL SVCS−146,970$25K
- WDCWESTERN DIGITAL CORP.−417,160$25K
- + 25 more…
Recent transactions
Last 20 moves
TRIM
AEVA TECHNOLOGIES INC
−14,452
~$0.01 · 2025Q4
2026-02-17
SOLD
DICKS SPORTING GOODS INC
−132,425
~$0.22 · 2025Q4
2026-02-17
NEW
BLOOM ENERGY CORP
+740,545
~$0.09 · 2025Q4
2026-02-17
ADD
CHIPOTLE MEXICAN GRILL INC
+158,725
~$0.04 · 2025Q4
2026-02-17
SOLD
SEAGATE TECHNOLOGY HLDNGS PL
−85,900
~$0.24 · 2025Q4
2026-02-17
SOLD
CAPITAL ONE FINL CORP
−43,920
~$0.21 · 2025Q4
2026-02-17
SOLD
CARPENTER TECHNOLOGY CORP
−220,035
~$0.25 · 2025Q4
2026-02-17
TRIM
CLEVELAND-CLIFFS INC NEW
−969,380
~$0.01 · 2025Q4
2026-02-17
ADD
COGENT BIOSCIENCES INC
+1,154,890
~$0.04 · 2025Q4
2026-02-17
