Senator Investment Group LP: STATE STR SPDR S&P 500 ETF T (SPY): Quarterly 13F Position History
As of Q2 2026, Senator Investment Group LP reported 246,000 shares of STATE STR SPDR S&P 500 ETF T (SPY), worth $183.7M and representing 6.7% of its 13F equity book. Quarter-over-quarter share count change: + 243,000 (+8100.0%) . The position first appeared in Q4 2018 and has been disclosed across 31 13F-HR filings in Pactolio's tracked window.
- 246,000Shares Held (Latest Filing)
- $183.7MReported Market Value (Latest Filing)
- 6.7%Portfolio Weight (% of 13F Equity Book)
- +243,000Quarter-over-Quarter Share Change
- +$181.8MQuarter-over-Quarter Value Change
- 1,142,000Peak Reported Shares (Historical)
Quarterly 13F-HR Disclosure History Source: SEC 13F-HR filings, 31 quarter s
| Quarter | Shares | QoQ Share Change | Share Change (%) | Market Value | Weight | Implied Price |
|---|---|---|---|---|---|---|
| Q2 2026 | 246,000 | +243,000 | +8100.0% | $183.7M | 6.7% | $746.8 |
| Q1 2026 | 3,000 | 0 | – | $2.0M | 0.1% | $650.4 |
| Q4 2025 | 3,000 | 111,000 | -97.4% | $2.0M | 0.1% | $681.9 |
| Q3 2025 | 114,000 | +10,000 | +9.6% | $75.9M | 2.8% | $666.2 |
| Q2 2025 | 104,000 | +104,000 | – | $64.3M | 2.5% | $617.9 |
| Q1 2025 | 0 | 0 | – | $0 | 0.0% | – |
| Q4 2024 | 0 | 0 | – | $0 | 0.0% | – |
| Q3 2024 | 0 | 0 | – | $0 | 0.0% | – |
| Q2 2024 | 0 | 0 | – | $0 | 0.0% | – |
| Q1 2024 | 0 | 0 | – | $0 | 0.0% | – |
| Q4 2023 | 0 | 0 | – | $0 | 0.0% | – |
| Q3 2023 | 0 | 0 | – | $0 | 0.0% | – |
| Q2 2023 | 0 | 0 | – | $0 | 0.0% | – |
| Q1 2023 | 0 | 586,000 | -100.0% | $0 | 0.0% | – |
| Q4 2022 | 586,000 | +476,000 | +432.7% | $224.1M | 20.2% | $382.4 |
| Q3 2022 | 110,000 | +100,000 | +1000.0% | $39.3M | 3.6% | $357.2 |
| Q2 2022 | 10,000 | +10,000 | – | $3.8M | 0.3% | $377.2 |
| Q1 2022 | 0 | 470,000 | -100.0% | $0 | 0.0% | – |
| Q4 2021 | 470,000 | +470,000 | – | $223.2M | 4.3% | $475.0 |
| Q3 2021 | 0 | 0 | – | $0 | 0.0% | – |
| Q2 2021 | 0 | 600,000 | -100.0% | $0 | 0.0% | – |
| Q1 2021 | 600,000 | +600,000 | – | $237.8M | 4.9% | $396.3 |
| Q4 2020 | 0 | 0 | – | $0 | 0.0% | – |
| Q3 2020 | 0 | 0 | – | $0 | 0.0% | – |
| Q2 2020 | 0 | 225,000 | -100.0% | $0 | 0.0% | – |
| Q1 2020 | 225,000 | 917,000 | -80.3% | $58.0M | 2.1% | $257.8 |
| Q4 2019 | 1,142,000 | +779,000 | +214.6% | $367.6M | 10.1% | $321.9 |
| Q3 2019 | 363,000 | 0 | – | $107.7M | 2.7% | $296.8 |
| Q2 2019 | 363,000 | 0 | – | $106.4M | 2.0% | $293.0 |
| Q1 2019 | 363,000 | 337,000 | -48.1% | $102.5M | 2.3% | $282.5 |
| Q4 2018 | 700,000 | – | – | $174.9M | 4.9% | $249.9 |
Methodology & FAQ
How This Position History Is Sourced
Each row is one SEC Form 13F-HR filing disclosing this position. Share count, market value, and reported quarter are taken verbatim from the filing; portfolio weight is recomputed against the same filing's total reported equity book. Implied price-per-share is market value divided by shares, a quarter-end mark rather than the manager's cost basis. See the full methodology document for the normalization rules.
When did Senator Investment Group LP first disclose a SPY position in 13F-HR filings?
Senator Investment Group LP first reported STATE STR SPDR S&P 500 ETF T (SPY) on its 13F-HR filing for the period ending 2018-12-31 (Q4 2018). The position has appeared on 31 reported quarters within Pactolio's tracked window.
What was Senator Investment Group LP's most recent quarter-over-quarter share-count change in SPY?
Between Q1 2026 and Q2 2026, Senator Investment Group LP added 243,000 shares of SPY (+8100.0%), bringing the total reported position to 246,000 shares at a market value of $183.7M.
Does the implied price-per-share represent Senator Investment Group LP's cost basis in SPY?
No. The implied price-per-share column is the 13F-HR reported market value divided by reported share count on the filing date (end of quarter). It is a quarter-end mark, not a cost basis or transaction price. Use it as a sanity check on the value column, not as an indicator of the manager's entry or exit price.