JANA Partners Management, LP: STATE STR SPDR S&P 500 ETF T (SPY): Quarterly 13F Position History
As of Q1 2026, JANA Partners Management, LP reported 343,665 shares of STATE STR SPDR S&P 500 ETF T (SPY), worth $223.5M and representing 13.9% of its 13F equity book. Quarter-over-quarter share count change: 47,672 (-12.2%) . The position first appeared in Q3 2023 and has been disclosed across 11 13F-HR filings in Pactolio's tracked window.
- 343,665Shares Held (Latest Filing)
- $223.5MReported Market Value (Latest Filing)
- 13.9%Portfolio Weight (% of 13F Equity Book)
- 47,672Quarter-over-Quarter Share Change
- -$43.4MQuarter-over-Quarter Value Change
- 680,733Peak Reported Shares (Historical)
Quarterly 13F-HR Disclosure History Source: SEC 13F-HR filings, 11 quarter s
| Quarter | Shares | QoQ Share Change | Share Change (%) | Market Value | Weight | Implied Price |
|---|---|---|---|---|---|---|
| Q1 2026 | 343,665 | 47,672 | -12.2% | $223.5M | 13.9% | $650.3 |
| Q4 2025 | 391,337 | +4,700 | +1.2% | $266.9M | 13.9% | $681.9 |
| Q3 2025 | 386,637 | 126,416 | -24.6% | $257.6M | 12.5% | $666.2 |
| Q2 2025 | 513,053 | 27,300 | -5.1% | $317.0M | 15.9% | $617.9 |
| Q1 2025 | 540,353 | +111,090 | +25.9% | $302.3M | 15.6% | $559.4 |
| Q4 2024 | 429,263 | 49,700 | -10.4% | $251.6M | 13.1% | $586.1 |
| Q3 2024 | 478,963 | +40,030 | +9.1% | $274.8M | 15.5% | $573.8 |
| Q2 2024 | 438,933 | 241,800 | -35.5% | $238.9M | 14.0% | $544.2 |
| Q1 2024 | 680,733 | +126,800 | +22.9% | $356.1M | 19.5% | $523.1 |
| Q4 2023 | 553,933 | +246,900 | +80.4% | $263.3M | 17.0% | $475.3 |
| Q3 2023 | 307,033 | — | — | $131.3M | 9.6% | $427.5 |
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, not the manager's cost basis. See the full methodology document for the normalization rules.
When did JANA Partners Management, LP first disclose a SPY position in 13F-HR filings?
JANA Partners Management, LP first reported STATE STR SPDR S&P 500 ETF T (SPY) on its 13F-HR filing for the period ending 2023-09-30 (Q3 2023). The position has appeared on 11 reported quarters within Pactolio's tracked window.
What was JANA Partners Management, LP's most recent quarter-over-quarter share-count change in SPY?
Between Q4 2025 and Q1 2026, JANA Partners Management, LP reduced its SPY position by 47,672 shares (-12.2%), leaving 343,665 shares at a market value of $223.5M.
Does the implied price-per-share represent JANA Partners Management, 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.