- Quarter end
- 31 Mar 2026
- the date the book describes
- Filed
- 27 Oct 2026
- latest of these filings; the earliest 12 May 2026
- Managers listing it
- 23
- at least, of 95 tracked, among listed positions
- Comparable managers
- 91
- filed both Q4 2025 and Q1 2026; 6 listed it in both
- Shares listed
- 31,523,524
- combined, among listed positions
- Reported value
- $594m
- 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: 14 buyers (opened or added shares) and 12 sellers (trimmed or exited), at least, among listed positions. Their net change in shares was +3,761,027.
Managers listing MIR in Q1 2026
23 of 23 holders
Largest increases and reductions, by shares
Increases
- Millennium Management LLCnew position · 5,106,801 shares now+5,106,801
- Maverick Capital Ltdnew position · 2,649,879 shares now+2,649,879
- AllianceBernstein LPexisting position · 1,653,429 shares now+1,332,930
- Wellington Management Group LLPexisting position · 837,812 shares now+589,037
- Davidson Kempner Capital Management LPexisting position · 1,314,819 shares now+386,306
Reductions
- MFS Investment Managementexisting position · 1,589,259 shares now-2,074,220
- Fidelity (FMR LLC)existing position · 6,551,692 shares now-1,862,608
- Invesco Ltdexisting position · 2,294,250 shares now-806,870
- Janus Henderson Group Ltdexisting position · 4,043,089 shares now-553,860
- T. Rowe Price Associates Incexisting position · 382,788 shares now-451,542
New positions and exits
New (6)
Exited (3)
- Arrowstreet Capital LPwas $25m
- Verition Fund Management LLCwas $2.1m
- Schonfeld Strategic Advisors LLCwas $215k
Ownership over time
Tracked managers listing it, at least.
| Quarter | Holders | Reported value | Buyers | Sellers |
|---|---|---|---|---|
| Q4 2021 | 2 | $10m | n.a. | n.a. |
| Q1 2022 | 1 | $3.0m | n.a. | n.a. |
| Q2 2022 | 1 | $2.0m | n.a. | n.a. |
| Q3 2022 | 1 | $88m | n.a. | n.a. |
| Q4 2022 | 1 | $77m | n.a. | n.a. |
| Q1 2023 | 4 | $105m | n.a. | n.a. |
| Q2 2023 | 2 | $84m | n.a. | n.a. |
| Q3 2023 | 2 | $71m | n.a. | n.a. |
| Q4 2023 | 2 | $104m | 1 | 1 |
| Q1 2024 | 3 | $116m | 2 | 1 |
| Q2 2024 | 3 | $103m | 1 | 2 |
| Q3 2024 | 4 | $105m | 2 | 2 |
| Q4 2024 | 7 | $349m | 5 | 2 |
| Q1 2025 | 4 | $291m | 2 | 4 |
| Q2 2025 | 8 | $442m | 4 | 4 |
| Q3 2025 | 9 | $431m | 5 | 5 |
| Q4 2025 | 6 | $241m | 10 | 17 |
| Q1 2026 | 7 | $261m | 14 | 12 |
| Q2 2026 | 8 | $287m | 14 | 12 |
Compare with…
Holders over time, buyers and sellers, and the managers holding both, side by side for up to four stocks.
MIR and GE →MIR and LRCX →MIR and GEV →Choose a stock to compare with MIR →
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 MIR, latest filings →Back to the 13F Explorer →