Closelook Records · Manager
Winton
Two official windows, both partial: a sworn SEC 13F filing (US-listed longs only, as of quarter end, up to 45 days old) and holder-level European short registers (only positions above the 0.5% threshold). No return series is public, so no Closelook Rating — the record shows positioning, not performance.
The record, as shown at the source
| Metric | Value | As of | Source |
|---|---|---|---|
| 13F book (Q2 2026) | $3.1B across 1,136 positions | 2026-06-30, filed 7 Aug 2026 | SEC EDGAR 13F-HR ↗ |
| Top position | Berkshire Hathaway — 5.8% of the 13F book | 2026-06-30, filed 7 Aug 2026 | SEC EDGAR 13F-HR ↗ |
| Disclosed short positions | 4 in the Germany registers | as published, 2026-10-24 | Bundesanzeiger ↗ |
Figures are quoted exactly as the named source showed them on the stated date; they move daily — verify at the source before relying on them.
The Closelook battery insufficient data
No verifiable daily series is publicly available for this record yet, so we compute no battery and no rating — a missing series never becomes a low score. What would unlock it is described in the grade basis above and in the methodology.
The 13F-HR book as of 2026-06-30
$3.1B across 1136 issuers, reported for quarter end 2026-06-30 and filed 2026-08-07 — the figures below are already up to a quarter old by construction. 13F-HR covers long US-listed equity positions only, as of quarter end, filed up to 45 days later. Not the whole book.
| # | Issuer | Value | Weight |
|---|---|---|---|
| 1 | BERKSHIRE HATHAWAY INC DEL | $0.2B | 5.8% |
| 2 | ISHARES TR — IBOXX INV CP ETF | $0.1B | 2.5% |
| 3 | VANGUARD SCOTTSDALE FDS — INT-TERM CORP | $0.1B | 1.6% |
| 4 | INVESCO EXCH TRADED FD TR II — SR LN ETF | $0.0B | 1.4% |
| 5 | SOLSTICE ADVANCED MATLS INC | $0.0B | 1.4% |
| 6 | KLA CORP | $0.0B | 1.3% |
| 7 | MASCO CORP | $0.0B | 1% |
| 8 | CME GROUP INC | $0.0B | 0.9% |
| 9 | CSX CORP | $0.0B | 0.9% |
| 10 | INCYTE CORP | $0.0B | 0.9% |
Quarter rotation vs 2026-03-31
New positions (494)
- ISHARES TR — IBOXX INV CP ETF $0.1B
- VANGUARD SCOTTSDALE FDS — INT-TERM CORP $0.1B
- CROWDSTRIKE HLDGS INC $0.0B
- PUBLIC STORAGE $0.0B
- CARVANA CO $0.0B
- MUELLER INDS INC $0.0B
- WELLS FARGO & CO $0.0B
- CIENA CORP $0.0B
Exited (437)
- ELECTRONIC ARTS INC was $0.0B
- HOLOGIC INC was $0.0B
- MASIMO CORP was $0.0B
- OLD DOMINION FREIGHT LINE IN was $0.0B
- PALANTIR TECHNOLOGIES INC was $0.0B
- NU HLDGS LTD was $0.0B
- AGILENT TECHNOLOGIES INC was $0.0B
- PHILIP MORRIS INTL INC was $0.0B
Added (shares) (288)
- INVESCO EXCH TRADED FD TR II — SR LN ETF +9%
- SOLSTICE ADVANCED MATLS INC +58%
- KLA CORP +16865.3%
- MASCO CORP +40.6%
- CME GROUP INC +120.7%
- CSX CORP +2.5%
- INCYTE CORP +47%
- AES CORP +17.3%
Trimmed (shares) (311)
- ENTEGRIS INC -12.2%
- EVERUS CONSTR GROUP -8.7%
- NVIDIA CORPORATION -10.2%
- GE VERNOVA INC -69.2%
- KROGER CO -12.7%
- ULTRA CLEAN HLDGS INC -6.6%
- MERIT MED SYS INC -7%
- HOWMET AEROSPACE INC -28.9%
Direction from aggregated share counts (CUSIP-matched across quarters); counts are complete; lists show the largest moves by value, up to eight each.
Aggregated by issuer from the information table at SEC EDGAR.
Disclosed shorts — the other side of the book
4 current net short positions published under this manager's legal entities in the official German (Bundesanzeiger) and Norwegian (Finanstilsynet) registers. Positions appear only above the 0.5% publication threshold, so these are a floor, not the full short book — and the 13F above shows only US-listed longs. As of 2026-10-31.
| Company | Register | Net short | Position date |
|---|---|---|---|
| Ibstock PLC | DE | 0.92% | 2026-10-09 |
| Salzgitter Aktiengesellschaft | DE | 0.60% | 2019-04-01 |
| Hypoport SE | DE | 0.59% | 2026-08-07 |
| Genuit Group | DE | 0.50% | 2026-09-25 |
All register positions: Short Registers board.
Fast lane — 5% stakes (Schedule 13D/G)
No Schedule 13D or 13G filed in the last 365 days, checked across every SEC filer entity of the manager. A 13D/G is only due on crossing 5% of a company's shares; books spread over hundreds of names rarely get there.
The Closelook read
$3.1B of US-listed longs across 1,136 positions, 494 new positions and 437 exits against the prior quarter — and 4 disclosed short positions in Germany, the largest Ibstock PLC at 0.92%.
Winton is one of the managers whose record is visible from both sides at once. The quarterly 13F shows the long book in US-listed equities — $3.1B across 1,136 positions for Q2 2026, with 494 new positions and 437 exits against the prior quarter. The largest position is Berkshire Hathaway at 5.8% of the book. The European short registers show the other side: 4 current net short positions published under its legal entities in Germany, the largest in Ibstock PLC at 0.92%. Neither window is the whole book — the 13F omits shorts, non-US positions and anything below the reporting line; the registers show only shorts above 0.5% in two countries — which is why the record grades B+ and carries no rating: it documents positioning as filed, not returns.
Entry updated 24 Oct 2026 · All records · Famous Calls Record