Superinvestor · SEC 13F
Seth Klarman portfolio — Q2 2026
Seth Klarman is portfolio manager of Baupost Group since its 1982 founding. Baupost Group reported $5.42B across 23 US-listed positions in its SEC Form 13F-HR for the quarter ended 2026-06-30, with AMAZON COM INC the largest at $892.3M (16.48% of reported value). 13F positions are as of quarter-end and filed up to 45 days later — they are not current positions.
Definition
A 13F filing is a quarterly SEC disclosure required of institutional investment managers with at least $100M in US-listed equity assets. It lists the manager's long US equity positions as of quarter-end and must be filed within 45 days of that date. It excludes shorts, most bonds, non-US listings — and any personal accounts outside the firm's reported holdings. Source: SEC EDGAR Form 13F-HR.
Seth Klarman's top holdings — Q2 2026
| # | Holding | Value | % of reported | Δ shares vs Q1 2026 |
|---|---|---|---|---|
| 1 | AMAZON COM INC | $892.3M | 16.48% | +625,100 |
| 2 | ELEVANCE HEALTH INC FORMERLY | $493.1M | 9.11% | 0 |
| 3 | RESTAURANT BRANDS INTL INC | $489.6M | 9.04% | −1,327,000 |
| 4 | ALPHABET INC | $484.7M | 8.95% | +190,800 |
| 5 | FERGUSON ENTERPRISES INC | $344.3M | 6.36% | +8,183 |
| 6 | GENUINE PARTS CO | $332.3M | 6.13% | +1,325,830 |
| 7 | UNION PAC CORP | $322.4M | 5.95% | −355,600 |
| 8 | VISA INC | $240.6M | 4.44% | 0 |
| 9 | WESCO INTL INC | $229.0M | 4.23% | −774,000 |
| 10 | AON PLC | $227.9M | 4.21% | −82,000 |
Top 10 of 23 stored positions by value — see the full Baupost Group 13F table and filing history.
Disclosures shown are public regulatory filings. Data may be delayed or incomplete. Smart-money entities may no longer hold positions shown. Not investment advice.
What changed vs Q1 2026
Largest share-count changes between the two most recent stored filings. Value deltas include the quarter's price move.
- AMAZON COM INCadded · +$242.8M
- GENUINE PARTS COadded · +$174.6M
- ALPHABET INCadded · +$145.9M
- CME GROUP INCadded · +$136.7M
- NORWEGIAN CRUISE LINE HLDGSadded · +$95.3M
- WILLIS TOWERS WATSON PLC LTDexited · −$259.6M
- WESCO INTL INCreduced · −$164.2M
- RESTAURANT BRANDS INTL INCreduced · −$107.6M
- LIBERTY GLOBAL LTDreduced · −$63.2M
- UNION PAC CORPreduced · −$51.4M
Disclosures shown are public regulatory filings. Data may be delayed or incomplete. Smart-money entities may no longer hold positions shown. Not investment advice.
Related on Flock
Frequently asked questions
What stocks does Seth Klarman own?
As disclosed in Baupost Group's SEC 13F filing for the quarter ended 2026-06-30, the firm associated with Seth Klarman reported 23 US-listed positions worth $5.42B, the largest being AMAZON COM INC, ELEVANCE HEALTH INC FORMERLY, RESTAURANT BRANDS INTL INC. 13F positions are as of quarter-end, filed up to 45 days later — not current holdings. Not investment advice.
What is Seth Klarman's largest holding?
AMAZON COM INC was the largest reported position in Baupost Group's Q2 2026 13F, valued at $892.3M — 16.48% of the $5.42B in reported holdings. Source: SEC EDGAR Form 13F-HR, quarter ended 2026-06-30.
What did Seth Klarman buy last quarter?
Versus the prior stored quarter (Q1 2026), Baupost Group's Q2 2026 13F shows share-count increases or newly reported positions including AMAZON COM INC, GENUINE PARTS CO, ALPHABET INC. The full quarter-over-quarter tables are on the Baupost Group 13F page. Disclosure reporting, not investment advice.
Is this Seth Klarman's personal portfolio?
It is the portfolio Baupost Group disclosed in its SEC Form 13F-HR — the firm's long US-listed equity positions as of quarter-end. Seth Klarman is portfolio manager of Baupost Group since its 1982 founding. A 13F excludes shorts, most bonds, non-US listings, and any personal accounts outside the firm's reported holdings.
How current is this data?
13F positions are as of quarter-end and filed up to 45 days later, so they are never current positions. Flock's coverage of Baupost Group runs through the quarter ended 2026-06-30 and re-checks SEC EDGAR daily for new filings.
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