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Positions 13F divulguées par les principaux gestionnaires institutionnels, curatées à la main et croisées avec la taxonomie de bulles QuantAbundancia. Mis à jour à chaque nouveau dépôt.
Warren Buffett
Buffett & Munger's holding company. The most-watched 13F on Wall Street — concentrated, slow-rotating, with cash reserves above $300B as of 2025. Equity book is dominated by AAPL, BAC, AXP, KO, and a long energy leg (CVX + OXY).
Bill Ackman
Concentrated activist book — typically 8-12 positions, long-biased, run with a hedged-call options overlay. Portfolio is famously disclosed in real time on Twitter.
Michael Burry
"The Big Short" Burry's personal book. Q3 2025 13F-HR (filed 2025-11-03) shows a sharp anti-AI macro bet: long PUTS on PLTR ($912M notional, 5M contracts) and NVDA ($187M, 1M contracts) make up 80% of the $1.38B disclosed. Long calls on PFE ($153M) + HAL ($62M) round out the bullish leg. The long-share sleeve is small ($68M total): MOH, LULU, SLM, and a Bruker 6.375% preferred — Burry rotates aggressively quarter to quarter.
Cathie Wood
High-conviction disruptive-innovation manager. Consolidated 13F across the ARKK family — concentrated in TSLA, COIN, ROKU, RBLX, HOOD, PLTR. Daily-disclosed at the ETF level; the 13F here is the rolled-up institutional view.
Chase Coleman
Tiger-cub style growth-tech long book. Public-equity portion of a much larger private/public hybrid platform. Concentrated in mega-cap tech (META, MSFT, GOOGL) plus a global growth tail (SE, SPOT).
David Einhorn
Long/short value manager. Best known for big short calls (Lehman 2008, GMO 2015) but the long book is a concentrated value portfolio — GRBK has been the largest position for years; recent quarters added BRKB and select healthcare/casino names.
Jensen Huang
NVIDIA's corporate strategic-investment book — every position ties to its AI-compute supply chain or downstream demand. Concentrated (5 holdings, $13.1B disclosed) with each name underlying a publicly-announced partnership: Intel (custom x86 CPUs via NVLink, Sept 2025 deal), CoreWeave (GPU cloud renter, pre-IPO stake), Synopsys (EDA tool partnership), Nokia (Q4 2025 5G/AI JV), Nebius (European compute capacity).
Nancy Pelosi (US House)
Aggregated equity exposure of US Representative Nancy Pelosi (D-CA), inferred from her continuous STOCK Act Periodic Transaction Reports (PTRs) and consolidated by Autopilot + Quiver Quantitative. Famously concentrated in tech mega-caps via long-dated call options (NVDA / AVGO / GOOGL LEAPs); aggregators count call options as their underlying shares so the weights here include both direct holdings and option-equivalent exposure. Snapshot dated 2026-05-02 — Pelosi trades frequently, so this goes stale fast.
Larry Fink
World's largest asset manager. Q4 2025 13F-HR discloses $5.92T across 4,513 unique issuers — every BLK-managed product with US-equity discretion (iShares ETFs, index mutual funds, active funds, SMAs). Top holdings closely mirror S&P 500 weights because passive index AUM dominates the book; this is not a stock-pick portfolio. Top 12 named single tickers sum to 33.5%; iShares Trust cross-holdings add another 2.6% ($156B across many self-held ETF classes); the remaining ~63.9% is the long tail of 4,500+ issuers.
Guy Spier
Guy Spier's Buffett-style value-investing partnership, run from Zurich since 1997. Author of "The Education of a Value Investor"; famous for the $650K charity lunch with Buffett (alongside Mohnish Pabrai, 2008). Textbook concentrated value book — 7 positions in Q4 2025, anchored by both Berkshire classes (~48.6% combined) and a tight basket of capital-light compounders (Mastercard, AmEx, Moody's, Ferrari, Daily Journal).
Leopold Aschenbrenner
Leopold Aschenbrenner's AI-supercycle hedge fund (Situational Awareness LP, San Francisco), launched late 2024 after the founder left OpenAI's Superalignment team. Aschenbrenner (25) wrote the canonical AGI-imminence essay "Situational Awareness: The Decade Ahead"; the book is the financial expression of that thesis — a concentrated long-and-options portfolio on AI infrastructure bottlenecks. Reported backers include Patrick Collison, Daniel Gross, and Nat Friedman. Latest 13F-HR (Q4 2025, $5.52B, 29 lines): zero Mag-7 longs; heavy AI-power (Bloom Energy + EQT + Kilroy Realty + Liberty + ProPetro + Solaris Energy Infra + Power Solutions + Babcock), all nine listed BTC miners pivoting to HPC datacenters (APLD/BTDR/BITF/CIFR/CLSK/CORZ/HUT/IREN/RIOT), CoreWeave long+call as the compute leg, Intel call as the foundry leg, Lumentum + Coherent for optical, SanDisk for memory, Tower for trailing-edge foundry, WhiteFiber for HPC infra, and one INFY put as the Indian-IT labor-automation hedge. Activist tier: filed Schedule 13D on Core Scientific (CORZ) 2025-08-19 at 5.8% (17.7M shares), amended 2025-10-14 to 9.4% (28.8M shares) — went from undisclosed to nearly a tenth of the company in eight weeks, reserving the right to influence the direction of the BTC-miner-to-GPU-datacenter conversion. Files 13F quarterly since Q4 2024.
Real EDGAR-sourced filings refresh weekly via collectors/sec_13f.py (Sundays 05:13 UTC). Funds tagged editorial are bootstrap approximations from press coverage and get superseded by precise EDGAR data on the next collector run.
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