Briar Hall Management LLC holds a concentrated book of 1 stock worth $6.7B as of Q1 2026 (disclosed May 13, 2026, a ~45-day 13F lag). This quarter they trimmed Illinois Tool Works. Their largest long position is Illinois Tool Works at 100% of the equity book.
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Top-heavy: concentrated book
Share of the disclosed book in its largest positions. A higher top-5 share means a more concentrated, higher-conviction portfolio.
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.
Estimated $ traded · quarter-end prices, no cost basis
No buys this quarter.
Bars show each stock's share of the portfolio. Click a row for its position history.
| # | Security | Value | Shares | % Port | Last move | History |
|---|---|---|---|---|---|---|
| 1 | Illinois Tool WKS Inc COM | $6.7B | 25.84M | 100.0% | ▼−0.1% Reduced · −15K sh |
As-of date vs the date the SEC received each filing
| Quarter | As of | Filed | Positions | Value | Form |
|---|---|---|---|---|---|
| Q1 2026 | Mar 31, 2026 | May 13, 2026 | 2 | $6.7B | 13F-HR |
| Q4 2025 | Dec 31, 2025 | Feb 13, 2026 | 2 | $6.4B | 13F-HR |
| Q3 2025 | Sep 30, 2025 | Nov 12, 2025 | 2 | $6.7B | 13F-HR |
| Q2 2025 | Jun 30, 2025 | Aug 12, 2025 | 2 | $6.4B | 13F-HR |
| Q1 2025 | Mar 31, 2025 | May 13, 2025 | 2 | $6.4B | 13F-HR |
| Q4 2024 | Dec 31, 2024 | Feb 14, 2025 | 2 | $6.6B | 13F-HR |
| Q3 2024 | Sep 30, 2024 | Nov 12, 2024 | 2 | $6.8B | 13F-HR |
| Q2 2024 | Jun 30, 2024 | Aug 9, 2024 | 2 | $6.2B | 13F-HR |
| Q1 2024 | Mar 31, 2024 | May 7, 2024 | 2 | $7.0B | 13F-HR |
| Q4 2023 | Dec 31, 2023 | Feb 5, 2024 | 2 | $6.9B | 13F-HR |
| Q3 2023 | Sep 30, 2023 | Nov 8, 2023 | 2 | $6.0B | 13F-HR |
| Q2 2023 | Jun 30, 2023 | Aug 1, 2023 | 2 | $6.5B | 13F-HR |
| Q1 2023 | Mar 31, 2023 | May 11, 2023 | 2 | $6.4B | 13F-HR |
| Q4 2022 | Dec 31, 2022 | Feb 14, 2023 | 2 | $5.8B | 13F-HR/A |
| Q3 2022 | Sep 30, 2022 | Nov 7, 2022 | 2 | $4.8B | 13F-HR |
| Q2 2022 | Jun 30, 2022 | Aug 3, 2022 | 2 | $4.7B | 13F-HR |
| Q1 2022 | Mar 31, 2022 | May 2, 2022 | 2 | $5.4B | 13F-HR |
| Q4 2021 | Dec 31, 2021 | Jan 31, 2022 | 2 | $6.4B | 13F-HR |
| Q3 2021 | Sep 30, 2021 | Oct 21, 2021 | 2 | $5.3B | 13F-HR |
| Q2 2021 | Jun 30, 2021 | Aug 5, 2021 | 2 | $5.8B | 13F-HR |
| Q1 2021 | Mar 31, 2021 | May 5, 2021 | 2 | $5.7B | 13F-HR |
| Q4 2020 | Dec 31, 2020 | Jan 25, 2021 | 2 | $5.3B | 13F-HR |
| Q3 2020 | Sep 30, 2020 | Oct 29, 2020 | 2 | $5.0B | 13F-HR |
Holdings from SEC EDGAR 13F-HR filings, updated quarterly ~45 days after quarter-end. Public domain. The book and weighting are long equity only; disclosed put/call options are listed separately and excluded from those totals. Price-derived performance is withheld until the price-source policy and freshness gate are green.