CIK: 0001443689
Total reported value
$2.2B
Reporting period: 2026-03-31 · Number of holdings: 65
Senator Investment Group LP disclosed 65 holdings in its latest 13F filing for the period ending 2026-03-31, with total reported value of $2.2B and a quarterly turnover rate of 81.4%.
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Senator Investment Group LP's disclosed holdings carry a Herfindahl concentration index of 0.032 — mathematically equivalent to about 31 equally-sized positions, well below its 65 actual disclosed holdings. That gap points to a strategy built around a small core of high-conviction bets rather than broad diversification.
Position sizes are fairly uniform across the portfolio (a coefficient of variation of 0.95), suggesting a disciplined, rules-based approach to how much capital goes into each idea.
No strong tilt toward either adding to existing winners or initiating outsized new positions was observed in the latest reported quarter.
Trim UAL
-54.3% -$218.2M
Add BA
+1503.6% $81.8M
Add NVDA
+63.4% $49.7M
Add DHR
+155.8% $43.4M
Add AMZN
+41.9% $27.8M
Trim WWD
-49.8% -$55.4M
Showing top 59 holdings (of 65 total)
| # | Ticker | Issuer | Asset Subclass | Weight | Weight Change | Shares Change | 4Q Trend |
|---|---|---|---|---|---|---|---|
| 1 | NVDA | Nvidia CORP | Stock-Tech | 6.61% | +2.84% | +63.41% | |
| 2 | UAL | United Airlines Holdings INC | Stock-Industrials | 6.04% | -7.99% | -54.30% | |
| 3 | AMZN | Amazon.com INC | Stock-Consumer Disc | 5.83% | +1.85% | +41.86% | |
| 4 | MSFT | Microsoft CORP | Stock-Tech | 4.55% | +0.91% | +42.67% | |
| 5 | TSM | Taiwan Semiconductor-sp Adr | Stock-Tech | 4.07% | +0.12% | -19.11% | |
| 6 | BA | Boeing Co/the | Stock-Industrials | 4.03% | +3.79% | +1503.64% | |
| 7 | WBD | Warner Bros Discovery INC | Stock-Comm Services | 3.84% | — | — | |
| 8 | DHR | Danaher CORP | Stock-Healthcare | 3.77% | +2.22% | +155.77% | |
| 9 | WWD | Woodward INC | Stock-Industrials | 3.72% | -1.75% | -49.83% | |
| 10 | V | Visa Inc-class A Shares | Stock-Financials | 3.54% | +3.54% | NEW | |
| 11 | META | Meta Platforms Inc-class A | Stock-Comm Services | 3.51% | +1.56% | +81.55% | |
| 12 | VRT | Vertiv Holdings Co-a | Stock-Industrials | 2.99% | +1.21% | -5.13% | |
| 13 | SN | SharkNinja, Inc. | Stock-Consumer Disc | 2.69% | +0.90% | +38.50% | |
| 14 | AVGO | Broadcom INC | Stock-Tech | 2.67% | +2.67% | NEW | |
| 15 | CVNA | Carvana Co | Stock-Consumer Disc | 2.67% | -1.73% | -28.99% | |
| 16 | PRM | Perimeter Solutions INC | Stock-Other | 2.66% | — | +0.94% | |
| 17 | AS | Amer Sports, Inc. | Stock-Consumer Disc | 1.97% | — | +40.65% | |
| 18 | TECK | Teck Resources Ltd-cls B | Stock-Materials | 1.83% | -1.36% | -53.68% | |
| 19 | VIK | Viking Holdings Ltd | Stock-Consumer Disc | 1.76% | — | +10.11% | |
| 20 | APO | Apollo Global Management INC | Stock-Financials | 1.74% | -1.38% | -36.69% | |
| 21 | C | Citigroup INC | Stock-Financials | 1.72% | +1.72% | NEW | |
| 22 | NU | Nu Holdings Ltd. | Stock-Financials | 1.62% | — | +11.36% | |
| 23 | PFE | Pfizer INC | Stock-Healthcare | 1.61% | +1.61% | NEW | |
| 24 | ULS | Ul Solutions INC - Class A | Stock-Industrials | 1.57% | +0.62% | +33.33% | |
| 25 | BKD | Brookdale Senior Living INC | Stock-Other | 1.54% | — | -27.87% | |
| 26 | HAL | Halliburton Co | Stock-Energy | 1.52% | +1.52% | NEW | |
| 27 | EEM | Ishares Msci Emerging Market | ETF-Emerging Markets | 1.49% | +1.49% | NEW | |
| 28 | AEIS | Advanced Energy Industries | Stock-Industrials | 1.48% | +1.48% | NEW | |
| 29 | LHX | L3harris Technologies INC | Stock-Industrials | 1.43% | +1.43% | NEW | |
| 30 | VST | Vistra CORP | Stock-Utilities | 1.36% | +0.65% | +78.88% | |
| 31 | COP | Conocophillips | Stock-Energy | 1.33% | +1.33% | NEW | |
| 32 | APH | Amphenol Corp-cl A | Stock-Tech | 1.16% | — | — | |
| 33 | AMAT | Applied Materials INC | Stock-Tech | 1.02% | +1.02% | NEW | |
| 34 | ATI | Ati INC | Stock-Industrials | 0.97% | -0.53% | -55.38% | |
| 35 | JHX | James Hardie Industries plc | Stock-Other | 0.96% | -0.56% | -39.39% | |
| 36 | RIOT | Riot Platforms INC | Stock-Financials | 0.85% | +0.85% | NEW | |
| 37 | RKT | Rocket Cos Inc-class A | Stock-Financials | 0.82% | +0.82% | NEW | |
| 38 | MT | Arcelormittal-ny Registered | Stock-Other | 0.81% | -0.25% | -41.16% | |
| 39 | HAS | Hasbro INC | Stock-Consumer Disc | 0.75% | +0.75% | NEW | |
| 40 | GLD | Spdr Gold Shares | ETF-Commodities | 0.59% | — | — | |
| 41 | CVS | Cvs Health CORP | Stock-Healthcare | 0.58% | +0.58% | NEW | |
| 42 | ECHO | Echostar Corp-a | Stock-Comm Services | 0.55% | +0.55% | NEW | |
| 43 | WRBY | Warby Parker Inc-class A | Stock-Other | 0.48% | — | +32.57% | |
| 44 | HOOD | Robinhood Markets INC - A | Stock-Financials | 0.45% | -1.39% | -65.19% | |
| 45 | HWM | Howmet Aerospace INC | Stock-Industrials | 0.44% | -0.36% | -57.46% | |
| 46 | UNH | Unitedhealth Group INC | Stock-Healthcare | 0.43% | -0.56% | -53.33% | |
| 47 | ALKS | Alkermes plc | Stock-Healthcare | 0.38% | — | — | |
| 48 | OPTU | Optimum Communications Inc-a | Stock-Comm Services | 0.30% | — | — | |
| 49 | ✓ | Stock-Other | 0.22% | — | — | ||
| 50 | ETHA | Ishares Ethereum Trust ETF | ETF-Other | 0.18% | — | +81.34% |
Performance for Q3 2026
+3.2%
Performance Last 4 Quarters
+8.5%
Based on 74% of reported portfolio value with available pricing
| Period | Holdings | Total value | Stability | Top holdings |
|---|---|---|---|---|
| 2026-03-31 | 65 | $2.2B | 81 | |
| 2025-12-31 | 60 | $2.5B | 60 | |
| 2025-09-30 | 62 | $2.7B | 84 | |
| 2025-06-30 | 55 | $2.6B | 0 | |
| 2025-03-31 | 51 | $1.9B | 100 | |
| 2024-12-31 | 69 | $3.4B | 0 | |
| 2024-09-30 | 63 | $2.1B | 0 | |
| 2024-06-30 | 71 | $2.1B | 0 | |
| 2024-03-31 | 69 | $2.2B | 0 | |
| 2023-12-31 | 70 | $2.3B | 0 | |
| 2023-09-30 | 55 | $1.8B | 0 | |
| 2023-06-30 | 54 | $2.2B | 0 | |
| 2023-03-31 | 45 | $1.8B | 0 | |
| 2022-12-31 | 42 | $1.1B | 0 | |
| 2022-09-30 | 49 | $1.1B | 0 | |
| 2022-06-30 | 55 | $1.4B | 0 | |
| 2022-03-31 | 75 | $3.2B | 0 | |
| 2021-12-31 | 94 | $5.2B | 0 | |
| 2021-09-30 | 127 | $5.8B | 0 | |
| 2021-06-30 | 135 | $5.3B | 96 | |
| 2021-03-31 | 134 | $4.9B | 83 | |
| 2020-12-31 | 91 | $5.3B | 77 | |
| 2020-09-30 | 59 | $3.4B | 57 | |
| 2020-06-30 | 48 | $2.9B | 100 | |
| 2020-03-31 | 33 | $2.8B | 93 | |
| 2019-12-31 | 39 | $3.7B | 78 | |
| 2019-09-30 | 40 | $4.0B | 81 | |
| 2019-06-30 | 50 | $5.4B | 95 | |
| 2019-03-31 | 38 | $4.4B | 91 | |
| 2018-12-31 | 30 | $3.6B | 100 | |
| 2018-09-30 | 40 | $7.8B | 61 | |
| 2018-06-30 | 40 | $10.1B | 89 | |
| 2018-03-31 | 45 | $8.4B | 85 | |
| 2017-12-31 | 53 | $9.3B | 97 | |
| 2017-09-30 | 46 | $7.5B | 73 | |
| 2017-06-30 | 55 | $8.9B | 68 | |
| 2017-03-31 | 56 | $8.1B | 98 | |
| 2016-12-31 | 41 | $6.6B | 79 | |
| 2016-09-30 | 60 | $7.6B | 63 | |
| 2016-06-30 | 51 | $6.2B | 87 | |
| 2016-03-31 | 46 | $7.6B | 70 | |
| 2015-12-31 | 44 | $8.0B | 57 | |
| 2015-09-30 | 50 | $8.2B | 66 | |
| 2015-06-30 | 58 | $11.5B | 89 | |
| 2015-03-31 | 61 | $10.4B | 100 | |
| 2014-12-31 | 57 | $9.1B | 0 | |
| 2014-09-30 | 61 | $9.6B | 52 | |
| 2014-06-30 | 62 | $9.5B | 54 | |
| 2014-03-31 | 58 | $8.4B | 78 | |
| 2013-12-31 | 68 | $8.7B | 58 | |
| 2013-09-30 | 54 | $6.9B | 81 | |
| 2013-06-30 | 62 | $6.4B | 0 |
Senator Investment Group LP's most significant position changes for 2026-03-31: Sold out: Capital One Financial CORP (COF); Sold out: Ss&c Technologies Holdings (SSNC); New buy: Visa Inc-class A Shares (V); Sold out: Union Pacific CORP (UNP); New buy: Broadcom INC (AVGO).
| # | Ticker | Issuer | Weight Change | Shares Change | Action |
|---|---|---|---|---|---|
| 1 | BA | Boeing Co/the | +3.8% | +1503.64% | Add |
| 2 | NVDA | Nvidia CORP | +2.8% | +63.41% | Add |
| 3 | DHR | Danaher CORP | +2.2% | +155.77% | Add |
| 4 | AMZN | Amazon.com INC | +1.9% | +41.86% | Add |
| 5 | META | Meta Platforms Inc-class A | +1.6% | +81.55% | Add |
| 6 | VRT | Vertiv Holdings Co-a | +1.2% | -5.13% | Trim |
| 7 | MSFT | Microsoft CORP | +0.9% | +42.67% | Add |
| 8 | SN | SharkNinja, Inc. | +0.9% | +38.50% | Add |
| 9 | VST | Vistra CORP | +0.7% | +78.88% | Add |
| 10 | ULS | Ul Solutions INC - Class A | +0.6% | +33.33% | Add |
| 11 | TSM | Taiwan Semiconductor-sp Adr | +0.1% | -19.11% | Trim |
| 12 | MT | Arcelormittal-ny Registered | -0.3% | -41.16% | Trim |
| 13 | HWM | Howmet Aerospace INC | -0.4% | -57.46% | Trim |
| 14 | ATI | Ati INC | -0.5% | -55.38% | Trim |
| 15 | JHX | James Hardie Industries plc | -0.6% | -39.39% | Trim |
| 16 | UNH | Unitedhealth Group INC | -0.6% | -53.33% | Trim |
| 17 | ATRO | Astronics CORP | -0.9% | -95.31% | Trim |
| 18 | TECK | Teck Resources Ltd-cls B | -1.4% | -53.68% | Trim |
| 19 | APO | Apollo Global Management INC | -1.4% | -36.69% | Trim |
| 20 | HOOD | Robinhood Markets INC - A | -1.4% | -65.19% | Trim |
| 21 | CVNA | Carvana Co | -1.7% | -28.99% | Trim |
| 22 | WWD | Woodward INC | -1.8% | -49.83% | Trim |
| 23 | UAL | United Airlines Holdings INC | -8% | -54.30% | Trim |
| 24 | COF | Capital One Financial CORP | — | EXIT | Sold out |
| 25 | SSNC | Ss&c Technologies Holdings | — | EXIT | Sold out |
| 26 | V | Visa Inc-class A Shares | — | NEW | New buy |
| 27 | UNP | Union Pacific CORP | — | EXIT | Sold out |
| 28 | AVGO | Broadcom INC | — | NEW | New buy |
| 29 | GE | General Electric | — | EXIT | Sold out |
| 30 | PFSI | Pennymac Financial Services | — | EXIT | Sold out |
| 31 | BILL | Bill Holdings INC | — | EXIT | Sold out |
| 32 | C | Citigroup INC | — | NEW | New buy |
| 33 | LPLA | Lpl Financial Holdings INC | — | EXIT | Sold out |
| 34 | LTH | Life Time Group Holdings INC | — | EXIT | Sold out |
| 35 | PFE | Pfizer INC | — | NEW | New buy |
| 36 | CMCSA | Comcast Corp-class A | — | EXIT | Sold out |
| 37 | HAL | Halliburton Co | — | NEW | New buy |
| 38 | EEM | Ishares Msci Emerging Market | — | NEW | New buy |
| 39 | AEIS | Advanced Energy Industries | — | NEW | New buy |
| 40 | LHX | L3harris Technologies INC | — | NEW | New buy |
| 41 | COP | Conocophillips | — | NEW | New buy |
| 42 | AMAT | Applied Materials INC | — | NEW | New buy |
| 43 | RIOT | Riot Platforms INC | — | NEW | New buy |
| 44 | RKT | Rocket Cos Inc-class A | — | NEW | New buy |
| 45 | HAS | Hasbro INC | — | NEW | New buy |
| 46 | MEOH | Methanex CORP | — | EXIT | Sold out |
| 47 | CVS | Cvs Health CORP | — | NEW | New buy |
| 48 | ECHO | Echostar Corp-a | — | NEW | New buy |
| 49 | ATRO 5.5 03-15-30 | Astronics CORP | — | EXIT | Sold out |
| 50 | XLI | Ss Industrial Select Sector | — | EXIT | Sold out |
| Period | Filed | Type | EDGAR |
|---|---|---|---|
| 2026-03-31 | 2026-05-13 | 13F-HR | View on EDGAR |
| 2025-12-31 | 2026-02-13 | 13F-HR | View on EDGAR |
| 2025-09-30 | 2025-11-14 | 13F-HR | View on EDGAR |
| 2025-06-30 | 2025-08-13 | 13F-HR | View on EDGAR |
| 2025-03-31 | 2025-05-14 | 13F-HR | View on EDGAR |
| 2024-12-31 | 2025-02-13 | 13F-HR | View on EDGAR |
| 2024-09-30 | 2024-11-13 | 13F-HR | View on EDGAR |
| 2024-06-30 | 2024-08-20 | 13F-HR | View on EDGAR |
| 2024-03-31 | 2024-05-14 | 13F-HR | View on EDGAR |
| 2023-12-31 | 2024-02-14 | 13F-HR | View on EDGAR |
| 2023-09-30 | 2023-11-14 | 13F-HR | View on EDGAR |
| 2023-06-30 | 2023-08-11 | 13F-HR | View on EDGAR |
| 2023-03-31 | 2023-05-12 | 13F-HR | View on EDGAR |
| 2022-12-31 | 2023-02-14 | 13F-HR | View on EDGAR |
| 2022-09-30 | 2022-11-10 | 13F-HR | View on EDGAR |
| 2022-06-30 | 2022-08-15 | 13F-HR | View on EDGAR |
| 2022-03-31 | 2022-05-13 | 13F-HR | View on EDGAR |
| 2021-12-31 | 2022-02-11 | 13F-HR | View on EDGAR |
| 2021-09-30 | 2021-11-12 | 13F-HR | View on EDGAR |
| 2021-06-30 | 2021-08-13 | 13F-HR | View on EDGAR |
| 2021-03-31 | 2021-05-17 | 13F-HR | View on EDGAR |
| 2020-12-31 | 2021-02-16 | 13F-HR | View on EDGAR |
| 2020-09-30 | 2020-11-13 | 13F-HR | View on EDGAR |
| 2020-06-30 | 2020-08-13 | 13F-HR | View on EDGAR |
| 2020-03-31 | 2020-05-15 | 13F-HR | View on EDGAR |
| 2019-12-31 | 2020-02-14 | 13F-HR | View on EDGAR |
| 2019-09-30 | 2019-11-13 | 13F-HR | View on EDGAR |
| 2019-06-30 | 2019-08-14 | 13F-HR | View on EDGAR |
| 2019-03-31 | 2019-05-15 | 13F-HR | View on EDGAR |
| 2018-12-31 | 2019-02-14 | 13F-HR | View on EDGAR |
| 2018-09-30 | 2018-11-14 | 13F-HR | View on EDGAR |
| 2018-06-30 | 2018-08-16 | Amendment | View on EDGAR |
| 2018-06-30 | 2018-08-13 | 13F-HR | View on EDGAR |
| 2018-03-31 | 2018-05-15 | 13F-HR | View on EDGAR |
| 2017-12-31 | 2018-02-14 | 13F-HR | View on EDGAR |
| 2017-09-30 | 2017-11-14 | 13F-HR | View on EDGAR |
| 2017-06-30 | 2017-08-14 | 13F-HR | View on EDGAR |
| 2017-03-31 | 2017-05-12 | 13F-HR | View on EDGAR |
| 2016-12-31 | 2017-02-14 | 13F-HR | View on EDGAR |
| 2016-09-30 | 2016-11-14 | 13F-HR | View on EDGAR |
| 2016-06-30 | 2016-08-12 | 13F-HR | View on EDGAR |
| 2016-03-31 | 2016-05-13 | 13F-HR | View on EDGAR |
| 2015-12-31 | 2016-02-12 | 13F-HR | View on EDGAR |
| 2015-09-30 | 2015-11-13 | 13F-HR | View on EDGAR |
| 2015-06-30 | 2015-08-13 | 13F-HR | View on EDGAR |
| 2015-03-31 | 2015-05-15 | 13F-HR | View on EDGAR |
| 2014-12-31 | 2015-02-23 | Amendment | View on EDGAR |
| 2014-12-31 | 2015-02-17 | 13F-HR | View on EDGAR |
| 2014-09-30 | 2014-11-14 | 13F-HR | View on EDGAR |
| 2014-06-30 | 2014-08-14 | 13F-HR | View on EDGAR |
| 2014-03-31 | 2014-05-15 | 13F-HR | View on EDGAR |
| 2013-12-31 | 2014-02-14 | 13F-HR | View on EDGAR |
| 2013-09-30 | 2013-11-14 | 13F-HR | View on EDGAR |
| 2013-06-30 | 2013-08-14 | 13F-HR | View on EDGAR |
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