Senator Investment Group
Senator Investment Group · SEC CIK 1443689
Event-driven and opportunistic.
This filing is 158 days old. Senator Investment Group keeps roughly 70% of its positions in a typical quarter, so about 54% of this book is likely still intact today.
How half-life is computedSnapshot half-life is the number of days after the period end at which half of this specific fund's reported book is expected to have changed, measured from its own past filings. It is a decay estimate, not knowledge of current positions.
Largest holdings, as filed
Top 10 of 58 positions. Weights are against the whole filed book. 13F filings cover US-listed holdings only.
| Company | Ticker | Value | % of book | Freshness |
|---|---|---|---|---|
| NVIDIA CORPORATION | NVDA | $143.86M | 5.3% | |
| UNITED AIRLS HLDGS INC | UAL | $131.63M | 4.8% | |
| AMAZON COM INC | AMZN | $127.07M | 4.6% | |
| MICROSOFT CORP | MSFT | $99.02M | 3.6% | |
| TAIWAN SEMICONDUCTOR MANUFAC | TSM | $88.71M | 3.2% | |
| BOEING CO | BA | $87.77M | 3.2% | |
| WARNER BROS DISCOVERY INC | WBD | $83.69M | 3.0% | |
| DANAHER CORP DEL | DHR | $82.16M | 3.0% | |
| WOODWARD INC | WWD | $81.08M | 3.0% | |
| VISA INC | V | $77.07M | 2.8% |
Freshness: how likely each position is still held today, from this fund's own turnover history, each position's tenure and the filing's age. Hover a bar for the numbers. Method.
What changed last quarter
Between Q1 2026 and Q1 2026, the largest add was NVDA (shares up 63%), now $143.86M; the largest trim was UAL (shares down 54%); MSFT, VIKING HOLDINGS LTD, APO no longer appear among the previous quarter's largest positions. All of it computed from the two filings, nothing inferred.
Biggest buys, Q1 2026
Common questions
What are Senator Investment Group's biggest holdings?
As of the Q1 2026 13F, the largest reported positions at Senator Investment Group are NVDA (5.3% of the book), UAL (4.8% of the book), AMZN (4.6% of the book).
How big is Senator Investment Group's portfolio?
The latest 13F reports $2.74B across 58 US-listed positions. 13F filings cover US-listed holdings only, so non-US positions and shorts are not included.
Does Senator Investment Group still hold these positions?
Unknown for certain: a 13F may be filed up to 45 days after quarter end. Based on Senator Investment Group's own filing history, the fund keeps roughly 70% of positions in a typical quarter, so at 158 days since the period end roughly 54% of this book is likely intact. The snapshot half-life for this fund is about 179 days.
What did Senator Investment Group buy and sell last quarter?
Between Q1 2026 and Q1 2026, the largest add was NVDA (shares up 63%), now $143.86M; the largest trim was UAL (shares down 54%); MSFT, VIKING HOLDINGS LTD, APO no longer appear among the previous quarter's largest positions. All of it computed from the two filings, nothing inferred.
Funds with overlapping books
Inside the app: the full book for Senator Investment Group, quarter on quarter buys and sells, consensus across 140+ funds and copy-to-watchlist.
Source: SEC EDGAR 13F filings. Values are as filed and cover US-listed positions only. A 13F may be filed up to 45 days after the quarter ends, so positions can change before the filing is even public; the freshness figures above quantify that lag instead of hiding it. Educational information, not financial advice.