Portfólios

Berkshire Hathaway

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).

Pershing Square Capital

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.

Scion Asset Management

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.

ARK Investment Management

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.

Tiger Global Management

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).

Greenlight Capital

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.

Citadel Advisors

Ken Griffin

Ken Griffin's multi-strategy hedge fund (founded 1990, HQ Miami). One of the largest and most successful hedge funds in history - multi-strategy book spanning equities, fixed income, commodities, credit, and quantitative trading. The 13F-HR equity portion alone routinely exceeds $500B notional across thousands of long lines; the headline names cluster around mega-cap tech (NVDA, AMZN, MSFT, AAPL, META, GOOGL, TSLA), broad-market ETFs (IVV, DIA) used as market-neutral ballast, the AI-chip stack (AVGO, TSM, MU), and tactical industrials (NSC, ASHTY). Citadel is also the largest single market maker in US equities via Citadel Securities (a separate broker-dealer arm).

NVIDIA Corporation

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

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.

BlackRock, Inc.

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.

Aquamarine Fund

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).

Situational Awareness LP

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. **2026-05-27 SC 13G DISCLOSURE - $NBIS at 5.6%.** Filed a 12,410,060 Class A share stake in Nebius Group, ~$2.59B at filing-date close ($208.37). This is the SINGLE LARGEST position ever disclosed by the fund - bigger than the $2.04B SMH put or the $1.57B NVDA put from the Q1 2026 13F-HR. NBIS is the ex-Yandex N.V. AI-compute infrastructure spinoff, US-listed on NASDAQ since late 2024, operating NVIDIA H100/H200 GPU clusters in Finland and serving AI labs + enterprises via Nebius AI Cloud. Acquired between 2026-03-31 (Q1 13F cutoff) and the 2026-05-27 disclosure. The 13G adds a NEW thematic leg on top of the Q1 book: a direct operational-AI-compute long - owning the running cluster business itself, not just the supply chain feeding it. Q1 2026 13F-HR (period 2026-03-31, filed 2026-05-18) documents the tactical pivot quarter: 42 positions, $13.68B total notional - 2.5× the Q4 2025 book. The portfolio is 62% SHORT via $8.46B in puts hitting the entire chip stack - SMH ($2.04B), NVDA ($1.57B), AMD ($969M), AVGO ($1.01B), ORCL ($1.07B), ASML ($494M), plus straddles on MU and TSM. The long side held the AI-infrastructure-bottleneck thesis: Bloom Energy ($879M anchor + $55M calls), SanDisk tripled to $1.11B aggregate (long+calls), CoreWeave ~$700M, all nine BTC-miners-to-HPC names retained (CORZ $389M, IREN $401M, APLD $320M, RIOT $142M, CLSK $104M, BITF, BTDR, HIVE, CIFR-out). Three new names this quarter: SHAZ, TE, HIVE. Activist tier: CORZ 13D at 9.4%, position held through Q1. Pattern reads as: short the picks-and-shovels priced for AGI buildout, long the infrastructure (power generation, datacenter colo housed in ex-miner shells, NAND/HBM) - and now ALSO long the operational AI compute layer via NBIS - that the market hasn't fully priced.

Donald J. Trump

Donald J. Trump (US President, 47th)

Disclosed trading account of US President Donald J. Trump (47th). Surfaces the holdings reconstruction implied by two OGE Form 278-T Periodic Transaction Reports filed 2026-05-14 → 2026-05-15, covering 3,711 securities transactions executed January 6 → March 30, 2026 with a cumulative reported transaction value of $220M-$750M (OGE discloses bands, not exact dollar amounts). The Q1 buy concentration is overwhelmingly AI-supercycle: semiconductors (NVDA, AVGO, TXN, KLAC, CDNS, SNPS, AMD, MU, AMKR, INTC), data center hardware (DELL, JBL, ORCL), enterprise SaaS down 30-45% YTD as buy-the-dip (ADBE, NOW, WDAY, CRM, FIS), and crypto-linked equities (COIN with 9 buys, MARA, MSTR/Strategy). Three Mag-7 names sold in size on Feb 10 in the $5M-$25M band (MSFT, AMZN, META) while AAPL was net-bought (8 buys vs 1 sell). The account also liquidated $15M of VIG and material slugs of SPY/VOO/IVV in January, indicating a rotation out of broad-market ETF beta into single-name tech. This is the disclosed trading account only - it excludes real estate, the TMTG/DJT stake, branded businesses, and other reportable assets carried on the annual Form 278. Multiple outlets (NBC, CNBC, Euronews) have noted the 3,711-transactions-in-11-weeks cadence does not match the President's historical behavior; the account is widely understood to be discretionary-managed by an outside advisor. The holdings list is sorted here by YTD performance (descending) to mirror the @Speculator_io reconstruction image; OGE 278-T does not publish point-in-time weights so weight_pct is left NULL.

Bridgewater Associates

Ray Dalio (founder)

Ray Dalio's global macro firm, founded in 1975 in Westport, Connecticut, and one of the largest hedge funds in the world. The 13F-HR shows only its US-listed equity book, which leans on broad index exposure and large-cap names rather than concentrated bets.

Renaissance Technologies

Jim Simons (founder)

The quantitative firm Jim Simons founded in 1982, known for the Medallion fund. Its 13F-HR lists thousands of short-horizon positions driven by statistical models, so the holdings change a lot from quarter to quarter.

Duquesne Family Office

Stanley Druckenmiller

Stanley Druckenmiller's family office, which he has run since closing Duquesne Capital to outside money in 2010. A concentrated, macro-driven book that often rotates hard between quarters.

Appaloosa

David Tepper

David Tepper's fund, founded in 1993 and known for large, high-conviction bets on US large caps and on market turning points.

Baupost Group

Seth Klarman

Seth Klarman's value-oriented firm, founded in 1982 in Boston. Klarman is the author of Margin of Safety; the book favours out-of-favour names and holds a lot of cash when bargains are scarce.

Third Point

Dan Loeb

Dan Loeb's event-driven and activist fund, founded in 1995, known for public letters pushing management changes at the companies it owns.

Soros Fund Management

George Soros

The firm George Soros founded in 1970, run as a family office since 2011. Its 13F-HR covers the US-listed equity portion of a much broader macro book.

Coatue Management

Philippe Laffont

Philippe Laffont's technology-focused fund, founded in 1999, one of the largest holders of AI and internet names among hedge funds.

Viking Global Investors

Andreas Halvorsen

Andreas Halvorsen's long/short equity fund, founded in 1999, a fundamental stock picker across sectors.

Lone Pine Capital

Stephen Mandel (founder)

The long/short equity fund Stephen Mandel founded in 1997, with a concentrated book of growth and quality names.

Two Sigma Investments

John Overdeck and David Siegel

The quantitative firm John Overdeck and David Siegel founded in 2001. Like other quants, its 13F-HR is a long, model-driven list that moves quarter to quarter.

Himalaya Capital

Li Lu

Li Lu's value fund, founded in 1997. Charlie Munger was an investor with him for decades; the US book is small and very concentrated.

Carl Icahn

Carl Icahn

The 13F-HR filed personally by activist investor Carl Icahn, covering his US-listed stakes, many of them positions where he pushes for board or strategy changes.

Gates Foundation Trust

The trust that manages the endowment of the Gates Foundation. Its 13F-HR has long been concentrated in a few names, Berkshire Hathaway and Microsoft among them.

Elliott Investment Management

Paul Singer

Paul Singer's firm, founded in 1977, one of the best-known activist investors. The 13F-HR shows only its US-listed equity stakes.

Point72 Asset Management

Steve Cohen

Steve Cohen's multi-manager firm, founded in 2014. Many independent teams trade side by side, so the 13F-HR is broad and changes often.

Millennium Management

Israel Englander

Israel Englander's multi-manager firm, founded in 1989. Hundreds of independent trading teams make its 13F-HR one of the longest filings each quarter.

D. E. Shaw

David E. Shaw (founder)

The firm computer scientist David E. Shaw founded in 1988, mixing quantitative and discretionary strategies across a very broad book.