Senator Investment Group 13F, Q1 2026
Senator Investment Group · quarter ending 31 March 2026 · filed 13 May 2026 · SEC CIK 1443689
Common stock only: shares the fund reported owning at the quarter end, valued as filed.
Largest positions, Q1 2026
The 25 largest of 59 positions. Weights are against the whole filed book. Changes are in shares held, against the Q4 2025 filing.
| Company | Ticker | Value | % of book | vs Q4 2025 |
|---|---|---|---|---|
| NVIDIA CORPORATION | NVDA | $143.86M | 6.6% | +63% shares |
| UNITED AIRLS HLDGS INC | UAL | $131.63M | 6.0% | -54% shares |
| AMAZON COM INC | AMZN | $127.07M | 5.8% | +42% shares |
| MICROSOFT CORP | MSFT | $99.02M | 4.5% | +43% shares |
| TAIWAN SEMICONDUCTOR MANUFAC | TSM | $88.71M | 4.1% | -19% shares |
| BOEING CO | BA | $87.77M | 4.0% | +1504% shares |
| WARNER BROS DISCOVERY INC | WBD | $83.69M | 3.8% | unchanged |
| DANAHER CORP DEL | DHR | $82.16M | 3.8% | +156% shares |
| WOODWARD INC | WWD | $81.08M | 3.7% | -50% shares |
| VISA INC | V | $77.07M | 3.5% | new |
| META PLATFORMS INC | META | $76.42M | 3.5% | +82% shares |
| VERTIV HOLDINGS CO | VRT | $65.15M | 3.0% | -5% shares |
| SHARKNINJA INC | $58.67M | 2.7% | +39% shares | |
| BROADCOM INC | AVGO | $58.11M | 2.7% | new |
| CARVANA CO | CVNA | $58.06M | 2.7% | -29% shares |
| PERIMETER SOLUTIONS INC | PRM | $57.88M | 2.7% | unchanged |
| AMER SPORTS INC | $42.84M | 2.0% | +41% shares | |
| TECK RESOURCES LTD | TECK | $39.78M | 1.8% | -54% shares |
| VIKING HOLDINGS LTD | $38.43M | 1.8% | +10% shares | |
| APOLLO GLOBAL MGMT INC | APO | $37.88M | 1.7% | -37% shares |
| CITIGROUP INC | C | $37.42M | 1.7% | new |
| NU HLDGS LTD | $35.21M | 1.6% | +11% shares | |
| PFIZER INC | PFE | $35.10M | 1.6% | new |
| UL SOLUTIONS INC | ULS | $34.28M | 1.6% | +33% shares |
| BROOKDALE SR LIVING INC | BKD | $33.64M | 1.5% | -28% shares |
What changed since Q4 2025
Against the Q4 2025 filing, Senator Investment Group opened 17 new positions, added to 16, trimmed 15, left 11 unchanged and exited 17. Every position is compared, matched on its CUSIP; a change of 2% or less in shares counts as unchanged.
New positions
and 9 more
Exited
- COFwas $114.35M
- SSNCwas $90.50M
- UNPwas $63.57M
- GEwas $46.20M
- PFSIwas $37.85M
- BILLwas $37.82M
- LPLAwas $35.72M
- LTHwas $35.22M
and 9 more
Other quarters
Source: SEC Form 13F-HR, accession 0001443689-26-000006, filed by Senator Investment Group LP. Values are as filed and cover US-listed positions only; a 13F does not show short positions or holdings outside the US. A 13F may be filed up to 45 days after the quarter ends, so the fund may have traded since. Educational information, not financial advice.