13F Portfolios

Altimeter Capital Management, LP 13F: Portfolio & Holdings

In its most recent SEC Form 13F-HR filing (as of Q1 2026), Altimeter Capital Management, LP (SEC CIK 0001541617) reported 13 positions with a combined market value of $5.7 billion. The Menlo Park-based hedge fund maintains a highly concentrated portfolio with a Technology sector tilt, which represents 70.5% of its exposure.

Its largest holdings are Nvidia Corporation Com (NVDA) at 28.6%, Meta Platforms INC (META) at 19.6%, and Uber Technologies INC (UBER) at 10.1%.

The largest exit was Coupang INC (CPNG) . See the fund’s full Q1 2026 buys, sells, and portfolio changes →

Based on published SEC 13F filings, Altimeter's closest peer funds by portfolio overlap are Voyager Global Management LP (77.6%), M & L Capital Management Ltd (65.7%), and Joho Capital LLC (62.7%).

13F AUM
$5.7B
Equity Positions
13
Top-10 Concentration
98.5%
Largest Sector · 70.5%
Technology
Longest-Held Position · 33 qtrs
META
Median Holding Period
4 Qtrs

What are Altimeter’s largest 13F holdings as of Q1 2026?

Largest 13F positions disclosed by Altimeter, ranked by portfolio weight. Full multi-quarter history and the broader institutional holder base for each ticker linked per row.

Top 10 disclosed equity positions for Altimeter in Q1 2026 — ranked by portfolio weight; share count and market value sourced from SEC Form 13F-HR filings.
# Issuer Ticker Sector Weight Position Value Detail
1 NVIDIA CORPORATION COM NVDA Technology 28.6% $1.6B Position History All Holders
2 META PLATFORMS INC META Communication Services 19.6% $1.1B Position History All Holders
3 UBER TECHNOLOGIES INC UBER Technology 10.1% $573.4M Position History All Holders
4 TAIWAN SEMIC-ADR TSM Technology 8.1% $461.5M Position History All Holders
5 MICROSOFT MSFT Technology 7.7% $438.1M Position History All Holders
6 AMAZON.COM AMZN Consumer Cyclical 7.6% $435.2M Position History All Holders
7 COREWEAVE INC CRWV Technology 6.1% $348.5M Position History All Holders
8 SNOWFLAKE INC SNOW Technology 5.1% $290.5M Position History All Holders
9 ARM HOLDINGS PLC NEW ARM Technology 4.6% $259.5M Position History All Holders
10 AXON ENTERPRISE INC NEW AXON Industrials 1.1% $63.3M Position History All Holders

View Altimeter's Q1 2026 portfolio changes and trading report →

Latest

Portfolio composition

Sectors, concentrations, and a tap-through treemap of every position in the fund's latest 13F.

Allocation by stock13 positions · click any tile for institutional holders
Allocation by sector6 sectors · same palette as the stock tiles

Holding period analytics

Distribution of holding periods for all 137 stocks the fund has ever held (up to selected quarter):

Which Funds Hold a Similar Portfolio to Altimeter?

Ranked by percentage of the peer fund's 13F equity portfolio that overlaps with Altimeter's positions in Q1 2026.

Funds with the most portfolio overlap with Altimeter in Q1 2026 — Ranked by overlap percentage
# Fund Shared Positions Overlap %
1 Voyager Global Management LP 5 77.6%
2 M & L Capital Management Ltd 4 65.7%
3 Joho Capital LLC 3 62.7%
4 Pershing Square Capital Management, L.P. 4 59.5%
5 Newlands Management Operations LLC 4 58.5%
6 BlueSpruce Investments, LP 4 56.5%
7 Altarock Partners LP 2 55.0%
8 Crake Asset Management LLP 5 53.7%
9 Harvard Management CO INC 6 52.8%
10 Theleme Partners LLP 4 47.9%

How Has Altimeter's AUM Changed Over Time?

Quarterly 13F-reported AUM for Altimeter, derived from aggregate reported position market values disclosed to the U.S. SEC.

Methodology & FAQ

How We Track Altimeter Holdings

Our data is systematically aggregated directly from quarterly Form 13F-HR disclosures submitted to the U.S. Securities and Exchange Commission (SEC).

  • Who Must File (Reporting Threshold): This dataset includes filings from U.S. institutional investment managers, hedge funds, mutual funds, university endowments, and family offices managing at least $100 million in Section 13(f) securities (including equities, options, convertibles, ETFs, and warrants).
  • What is Included (Data Scope): By regulation, 13F filings include long positions in U.S. exchange-listed stocks, ETFs, shares of closed-end investment companies, and convertible debt, as defined in the SEC's official Section 13(f) securities list . For listed options (calls/puts) the reported value is based on the notional value.
  • Portfolio Weight Explained (Metric Definition): “Portfolio Weight” shows how much of a fund's total reported 13F portfolio value (excluding listed options) is allocated to a specific position on the reporting date.
  • How to Use This Data (Interpretation): Quarter-over-quarter changes in shares and portfolio weight reflect a combination of active trading and market price movements. These are descriptive metrics of fund allocation, not explicit buy or sell signals.
What does Altimeter's 13F filing disclose about their portfolio?

A Form 13F-HR filed by Altimeter with the U.S. SEC discloses all long positions in Section 13(f) securities — U.S.-listed equities, ETFs, closed-end funds, and listed put/call options — held at quarter-end with a market value of at least $200,000 or 10,000 or more shares. Pactolio aggregates these filings to surface the manager’s reported portfolio weights, share counts, and quarter-over-quarter portfolio changes in a structured format. The filing represents a point-in-time snapshot of disclosed long-side exposure, not a real-time or complete view of the fund’s total book.

How do you measure conviction in Altimeter's portfolio allocations?

Conviction is measured by portfolio weight — the percentage of Altimeter’s total reported 13F market value allocated to a given position — rather than by absolute share count or dollar value alone. A position representing a disproportionately large share of the fund’s disclosed book signals high-conviction allocation, regardless of whether it ranks among the fund’s largest absolute holdings.

What is excluded from Altimeter's 13F — short positions, swaps, and derivatives?

SEC Form 13F requires disclosure of long positions only. Specifically excluded are: short interest, total return swaps, credit default swaps, and all OTC derivatives — none of which appear in 13F filings regardless of position size. Listed put and call options must be disclosed but are excluded from portfolio weight calculations on this platform so that reported weights reflect direct equity exposure and remain comparable across filers. This means Altimeter’s 13F represents the reported long book, which may differ materially from its net economic exposure.

When is Altimeter's 13F data available, and how large is the reporting lag?

Investment managers must submit Form 13F within 45 calendar days of each quarter-end (the T+45 deadline). Pactolio ingests filings directly from SEC EDGAR as they are published — managers who file early appear in our system before the deadline, while late filers are captured on their actual filing date. The quarter label shown at the top of this page reflects the most recently processed 13F cycle for Altimeter. The inherent reporting lag means the data always reflects positions as of the prior quarter-end, not current holdings.

Who must file a Form 13F with the SEC, and does Altimeter qualify?

Under SEC Rule 13f-1, any investment manager — including hedge funds, family offices, registered investment advisers, pension funds, and university endowments — that exercises investment discretion over $100 million or more in Section 13(f) securities at any point during a calendar year must file Form 13F for that year. Altimeter meets this threshold, which is why its holdings are publicly disclosed and accessible on this platform. The $100 million threshold is evaluated on a rolling basis, meaning new filers can enter and existing filers can exit the disclosure regime as AUM crosses that boundary.