Hedge fund, long-only 13F filer
Altimeter Capital Management
US long stock positions, not assets under management
Form 13F-HR, filed 14 August 2026
Altimeter Capital Management has stopped filing, or filed late: its most recent 13F in our EDGAR ingest was filed 14 August 2026, covering the quarter ended 30 June 2026 — 1 reporting quarter behind the newest filing among managers we track. Everything below is that last filing, not a current portfolio.
How has Altimeter Capital Management's portfolio moved against the S&P 500?
Altimeter Capital Management's latest 13F filing covers the quarter ended 30 June 2026 and was filed 14 August 2026 (45 days after quarter end): 20 disclosed US-listed positions — 9.8B USD in long stock. Ten new buys, one add, one trim and three exits against the prior quarter. Holdings are up to 45 days old by the time they clear EDGAR.
Since Sept 2025Altimeter Capital Management +30%S&P 500 from Dec 2025 +9%
The line rebuilds Altimeter Capital Management's disclosed 13F holdings at each filing and holds them to the next, tracked against the S&P 500 where daily price history overlaps. Long US equity only — an illustrative read, not an audited return.
Since Sept 2024Altimeter Capital Management +46%S&P 500 from Dec 2025 +9%
The line rebuilds Altimeter Capital Management's disclosed 13F holdings at each filing and holds them to the next, tracked against the S&P 500 where daily price history overlaps. Long US equity only — an illustrative read, not an audited return.
- Long stock value
- 9.8B USD
- Positions
- 20
- Top holding
- NVDA, 19.2%
- Top sector
- Technology 66%
- New buys, Q2 2026
- 10
- Exits, Q2 2026
- 3
Values as reported, as of Q2 2026
Top holdings — quarter ended 30 June 2026
20 US-listed positions were disclosed for the quarter ended 30 June 2026; the 15 largest by reported value are below.
Source: SEC EDGAR Form 13F-HR, as filed.
| Position | Value | Weight | Shares | Last quarter |
|---|---|---|---|---|
| NVDANVIDIA CORPORATION | 1.9B USD | 19.2% | 9.4M | Held |
| CEREBRAS SYSTEMS INC | 1.6B USD | 16.2% | 7.2M | New buy |
| METAMETA PLATFORMS INC | 763.3M USD | 7.8% | 1.4M | Trimmed |
| TSMTAIWAN SEMICONDUCTOR MFG LTD | 682.6M USD | 6.9% | 1.4M | Held |
| CRWVCOREWEAVE INC | 604.6M USD | 6.2% | 6.1M | Added |
| ARMARM HOLDINGS PLC | 582.2M USD | 5.9% | 1.6M | Held |
| AMZNAMAZON COM INC | 578.1M USD | 5.9% | 2.4M | Held |
| UBERUBER TECHNOLOGIES INC | 532.0M USD | 5.4% | 7.4M | Held |
| SNOWSNOWFLAKE INC | 490.2M USD | 5.0% | 1.9M | Held |
| MSFTMICROSOFT CORP | 473.0M USD | 4.8% | 1.3M | Held |
| QCOMQUALCOMM INC | 347.9M USD | 3.5% | 1.9M | New buy |
| SPCXSPACE EXPLORATION TECHN CORP | 303.5M USD | 3.1% | 1.8M | New buy |
| MUMICRON TECHNOLOGY INC | 241.8M USD | 2.5% | 209.5K | New buy |
| AMATAPPLIED MATLS INC | 189.4M USD | 1.9% | 261.9K | New buy |
| KLACKLA CORP | 174.5M USD | 1.8% | 578.2K | New buy |
Quarterly changes — quarter ended 30 June 2026
15 changes vs the prior quarter's filing, as of 30 June 2026: 10 new, 1 added, 1 trimmed and 3 sold out.
What changed against the previous quarter's filing: new positions first, then adds, trims and exits, each sorted by position size.
New buys 10Adds 1Trims 1Exits 3
| Position | Change | Shares moved | Value after |
|---|---|---|---|
| CEREBRAS SYSTEMS INC | New buy | +7.2M | 1.6B USD |
| QCOMQUALCOMM INC | New buy | +1.9M | 347.9M USD |
| SPCXSPACE EXPLORATION TECHN CORP | New buy | +1.8M | 303.5M USD |
| MUMICRON TECHNOLOGY INC | New buy | +209.5K | 241.8M USD |
| AMATAPPLIED MATLS INC | New buy | +261.9K | 189.4M USD |
| KLACKLA CORP | New buy | +578.2K | 174.5M USD |
| LRCXLAM RESEARCH CORP | New buy | +394.1K | 170.8M USD |
| GOOGLALPHABET INC | New buy | +175.2K | 62.6M USD |
| SNPSSYNOPSYS INC | New buy | +140.3K | 62.6M USD |
| GRABWGRAB HOLDINGS LIMITED | New buy | +3.5M | 151K USD |
| CRWVCOREWEAVE INC | Added | +1.6M | 604.6M USD |
| METAMETA PLATFORMS INC | Trimmed | −598.4K | 763.3M USD |
| AXONAXON ENTERPRISE INC | Sold out | −149.0K | was 63.3M USD |
| AVGOBROADCOM INC | Sold out | −67.1K | was 20.8M USD |
| GRAB HOLDINGS LIMITED | Sold out | −3.5M | was 263K USD |
Rows sharing a company name are separate securities of the same issuer — different share classes or option positions, as filed.
Sector allocation
Technology carries the largest share of disclosed value, at 66%.
Weights are by reported value of the quarter-end holdings; sectors from the reference list, unclassified where none matched.
| Sector | Weight | Holdings |
|---|---|---|
| Technology | 66% | AMAT, ARM, CRWV, GOOGL, KLAC, LRCX, MSFT, MU, NVDA, QCOM, SNOW, SNPS, TSM, UBER |
| Other / unclassified | 16% | GRABW |
| Communication Services | 8% | META |
| Consumer Cyclical | 6% | AMZN |
| Industrials | 3% | SPCX |
| Financial Services | 1% | HOOD |
Altimeter Capital Management: frequently asked questions
What is Altimeter Capital Management's biggest holding?
As of the quarter ended 30 June 2026, the largest disclosed position was NVDA (NVIDIA CORPORATION), about 19.2% of the disclosed US-listed portfolio by reported value.
What did Brad Gerstner's Altimeter Capital Management buy in Q2 2026?
10 new positions were disclosed for the quarter ended 30 June 2026; the largest were CEREBRAS SYSTEMS INC, QCOM, SPCX. Adds and trims are listed in the quarterly-changes table on this page.
How concentrated is the portfolio?
Fairly concentrated. The top five positions are 56% of disclosed value and the top ten are 83%.
When is Altimeter Capital Management's next 13F due?
13F filings for the quarter ended 30 September 2026 are due by 16 November 2026 — managers have 45 days after each calendar quarter ends. Whether Altimeter Capital Management files is up to the manager; we show whatever EDGAR receives.
Does this show the whole portfolio?
No. Form 13F covers US-listed long equity and some options only — no short bets, bonds, cash, private businesses, non-US holdings or timing inside the quarter. Amended filings replace originals; this page always shows the latest canonical version.
Read the form itself on SEC EDGAR or see our plain-words guide to 13F filings — Altimeter Capital Management may have already changed these positions since 30 June 2026.
References
- SEC EDGAR Form 13F-HR, quarterly, up to 45 days delayed. Filings are public records. Ticker mapping via SEC public files and OpenFIGI.
- Finazon prior-day close, indicative (IEX-derived, not the official close), some closes dollar-rounded at the source