Seth Klarman runs Baupost Group LLC, a focused book of 23 stocks worth $5.4B as of Q2 2026 (disclosed Aug 13, 2026, a ~44-day 13F lag). This quarter they opened Cme Group Inc and trimmed Restaurant Brands Intern. Their largest long position is Amazon.com Inc at 16% of the equity book.
- Cme Group Inc
- Axalta Coating Systems Ltd
- Pershing Square Inc
- +6 more · largest first
- Amazon.com Inc
- Alphabet Inc-CL C
- Ferguson Enterprises Inc
- +3 more · largest first
- Restaurant Brands Intern
- Union Pacific Corp
- Wesco International Inc
- +6 more · largest first
Never miss a Klarman filing
One email when the next 13F lands, with what changed. Quarterly at most. Unsubscribe anytime.
Concentration
Top-heavy: focused book
Share of the disclosed book in its largest positions. A higher top-5 share means a more concentrated, higher-conviction portfolio.
Direct sector allocation
100% mapped to company sectors
Direct operating-company sectors from our SIC-based security master. ETF/fund and unclassified holdings stay visible separately; this is not ETF look-through exposure.
Biggest moves: latest quarter
Estimated $ traded · quarter-end prices, no cost basis
- ▲+89%$156.4M
- Amazon.com IncAMZN▲+20%$149.0M
- ▲New$136.7M
- ▲+113%$86.6M
- ▲+16%$67.4M
- ▲New$43.6M
- ▼−54%$267.4M
- ▼−23%$96.7M
- ▼−16%$96.2M
- ▼−41%$81.5M
- Liberty Global Ltd-CLBTYK▼−36%$53.4M
- ▼−11%$27.2M
Top holdings
23 companies · Q2 2026
| # | Stock | % of book | Value | Shares | Last move |
|---|---|---|---|---|---|
| 1 | Amazon.com IncAMZN | 16.5% | $892.3M | 3.7M | ▲+20% Added · +625K sh |
| 2 | Elevance Health IncELV | 9.1% | $493.1M | 1.3M | —Held |
| 3 | Restaurant Brands InternQSR | 9.0% | $489.6M | 6.8M | ▼−16% Reduced · −1.3M sh |
| 4 | Alphabet Inc-CL CGOOG | 9.0% | $484.7M | 1.4M | ▲+16% Added · +191K sh |
| 5 | Ferguson Enterprises IncFERG | 6.4% | $344.3M | 1.5M | ▲+0.6% Added · +8K sh |
| 6 | Genuine Parts CoGPC | 6.1% | $332.3M | 2.8M | ▲+89% Added · +1.3M sh |
| 7 | Union Pacific CorpUNP | 6.0% | $322.4M | 1.2M | ▼−23% Reduced · −356K sh |
| 8 | Visa Inc-Class A SharesV | 4.4% | $240.6M | 701K | —Held |
| 9 | Wesco International IncWCC | 4.2% | $229.0M | 663K | ▼−54% Reduced · −774K sh |
| 10 | Aon PLC-Class AAON | 4.2% | $227.9M | 687K | ▼−11% Reduced · −82K sh |
| 11 | Teleflex IncTFX | 3.3% | $178.6M | 1.4M | ▼−12% Reduced · −186K sh |
| 12 | Norwegian Cruise Line HoldinNCLH | 3.0% | $163.2M | 7.7M | ▲+113% Added · +4.1M sh |
| 13 | Molina Healthcare IncMOH | 2.7% | $144.9M | 634K | —Held |
| 14 | Cme Group IncCME | 2.5% | $136.7M | 619K | ▲New +619K sh |
| 15 | Herbalife LtdHLF | 2.2% | $121.8M | 9.3M | —Held |
| 16 | Eagle Materials IncEXP | 2.2% | $119.4M | 531K | ▼−41% Reduced · −362K sh |
| 17 | GDS Holdings Ltd - ADRGDS | 2.1% | $113.2M | 3.8M | ▲+24% Added · +725K sh |
| 18 | Americold Realty Trust IncCOLD | 2.0% | $107.4M | 6.8M | ▼−12% Reduced · −951K sh |
| 19 | Liberty Global Ltd-CLBTYK | 1.7% | $94.0M | 8.5M | ▼−36% Reduced · −4.9M sh |
| 20 | Grupo Aeromexico SAB De CVAERO | 1.6% | $87.8M | 4.9M | —Held |
| 21 | Axalta Coating Systems LtdAXTA | 0.8% | $43.6M | 1.3M | ▲New +1.3M sh |
| 22 | Dnow IncDNOW | 0.7% | $36.2M | 2.8M | ▼−23% Reduced · −837K sh |
| 23 | Pershing Square Inc | 0.2% | $12.9M | 392K | ▲New +392K sh |
| 24 | Vaxcyte IncPCVX | 0.0% | $0 | — | ▼−100% Exited |
| 25 | Tamboran Resources CorpTBN | 0.0% | $0 | — | ▲New New position |
Funds
1 vehicle
Build on this 13F portfolio
The public view is the crawlable proof. The same sourced dataset is available through REST and MCP for agents, research scripts, and back-office tools.
Ask your agent what Seth Klarman owns
This investor page is the Follow view. The Build view lets your agent pull the latest book, quarter-over-quarter moves, overlap with other managers, and the SEC filing behind each line, through REST or MCP.
curl -H "Authorization: Bearer YOUR_API_KEY" \ "https://arkolith.com/api/v1/funds/1061768/holdings"
Use Arkolith to show Seth Klarman's latest 13F book, the biggest position changes this quarter, and the filing each one comes from.
Aggregated from SEC Form 13F filings (institutional long equity positions, reported quarterly, up to 45 days after quarter-end). Holdings are public domain, sourced to SEC EDGAR. The book totals, weighting, concentration and sectors are long equity only; disclosed put/call options are listed separately and excluded from those figures. Price-derived performance is withheld until the price-source policy and freshness gate are green. Every panel is one call to the Arkolith API & MCP server. Portrait via Wikimedia Commons (Maryland GovPics, CC BY 2.0).