- Quarter end
- 31 Mar 2026
- the date the book describes
- Filed
- 27 Oct 2026
- latest of these filings; the earliest 8 May 2026
- Managers listing it
- 27
- at least, of 95 tracked, among listed positions
- Comparable managers
- 91
- filed both Q4 2025 and Q1 2026; 11 listed it in both
- Shares listed
- 15,033,004
- combined, among listed positions
- Reported value
- $727m
- combined, at the quarter end
AllianceBernstein LP. Values in this filing are at the previous quarter end's prices; its share count is the quarter end's.
Among the 91 comparable managers: 11 buyers (opened or added shares) and 21 sellers (trimmed or exited), at least, among listed positions. Their net change in shares was -2,886,583.
Managers listing MP in Q1 2026
27 of 27 holders
Largest increases and reductions, by shares
Increases
- D. E. Shaw & Co.existing position · 3,149,152 shares now+2,546,901
- Two Sigma Investments LPexisting position · 1,508,573 shares now+674,425
- Invesco Ltdexisting position · 3,795,278 shares now+357,571
- AllianceBernstein LPexisting position · 702,290 shares now+335,936
- Citadel Advisors LLCnew position · 257,413 shares now+257,413
Reductions
- Squarepoint Ops LLCexisting position · 248,447 shares now-1,562,795
- Susquehanna International Group LLPexisting position · 367,942 shares now-1,353,413
- Voloridge Investment Management LLCexisting position · 527,578 shares now-1,077,916
- Fidelity (FMR LLC)existing position · 898,310 shares now-488,986
- Man Group PLCexisting position · 16,549 shares now-461,370
New positions and exits
New (2)
Exited (6)
- Wellington Management Group LLPwas $8.9m
- Schonfeld Strategic Advisors LLCwas $5.9m
- Verition Fund Management LLCwas $2.3m
- Tudor Investment Corpwas $1.7m
- Brevan Howard Capital Management LPwas $802k
- Freestone Grove Partners LPwas $595k
Ownership over time
Tracked managers listing it, at least.
| Quarter | Holders | Reported value | Buyers | Sellers |
|---|---|---|---|---|
| Q4 2020 | 3 | $79m | n.a. | n.a. |
| Q1 2021 | 2 | $22m | n.a. | n.a. |
| Q2 2021 | 3 | $38m | n.a. | n.a. |
| Q3 2021 | 6 | $71m | n.a. | n.a. |
| Q4 2021 | 8 | $194m | n.a. | n.a. |
| Q1 2022 | 9 | $273m | n.a. | n.a. |
| Q2 2022 | 5 | $181m | n.a. | n.a. |
| Q3 2022 | 5 | $186m | n.a. | n.a. |
| Q4 2022 | 4 | $106m | n.a. | n.a. |
| Q1 2023 | 4 | $187m | n.a. | n.a. |
| Q2 2023 | 4 | $107m | n.a. | n.a. |
| Q3 2023 | 4 | $104m | n.a. | n.a. |
| Q4 2023 | 3 | $106m | 1 | 3 |
| Q1 2024 | 5 | $60m | 4 | 1 |
| Q2 2024 | 3 | $41m | 1 | 3 |
| Q3 2024 | 4 | $62m | 2 | 2 |
| Q4 2024 | 2 | $25m | 0 | 2 |
| Q1 2025 | 5 | $92m | 4 | 1 |
| Q2 2025 | 7 | $375m | 7 | 0 |
| Q3 2025 | 12 | $669m | 7 | 5 |
| Q4 2025 | 13 | $360m | 20 | 17 |
| Q1 2026 | 10 | $322m | 11 | 21 |
| Q2 2026 | 8 | $692m | 12 | 18 |
Compare with…
Holders over time, buyers and sellers, and the managers holding both, side by side for up to four stocks.
MP and LIN →MP and GLW →MP and HWM →Choose a stock to compare with MP →
How much of the picture this is
A 13F is a manager’s long US-listed equity book at a quarter end, filed up to 45 days later. It shows no shorts, cash, bonds or performance, and it is never today’s portfolio. Large books are listed to their largest positions, so a manager missing from this table may still hold a small position below that line. These are 95 tracked managers, not the institutional market.
Which funds own MP, latest filings →Back to the 13F Explorer →