- 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
- 24
- at least, of 95 tracked, among listed positions
- Comparable managers
- 91
- filed both Q4 2025 and Q1 2026; 5 listed it in both
- Shares listed
- 24,217,229
- combined, among listed positions
- Reported value
- $292m
- 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 19 sellers (trimmed or exited), at least, among listed positions. Their net change in shares was -4,133,347.
Managers listing OI in Q1 2026
24 of 24 holders
Largest increases and reductions, by shares
Increases
- Two Sigma Investments LPexisting position · 3,398,057 shares now+1,098,458
- Arrowstreet Capital LPexisting position · 4,246,337 shares now+1,030,705
- AllianceBernstein LPexisting position · 8,921,465 shares now+993,212
- Millennium Management LLCexisting position · 492,066 shares now+293,947
- Marshall Wace LLPexisting position · 388,382 shares now+284,884
Reductions
- Fidelity (FMR LLC)existing position · 711,794 shares now-2,331,246
- Citadel Advisors LLCexisting position · 270,622 shares now-990,880
- Wellington Management Group LLPexisting position · 1,974,325 shares now-741,797
- Renaissance Technologies LLCexisting position · 54,700 shares now-618,400
- D. E. Shaw & Co.existing position · 713,421 shares now-608,538
New positions and exits
New (2)
Exited (7)
- Jane Street Group LLCwas $15m
- Point72 Asset Management LPwas $11m
- Tudor Investment Corpwas $3.5m
- Voloridge Investment Management LLCwas $1.9m
- Verition Fund Management LLCwas $1.6m
- ExodusPoint Capital Management LPwas $1.2m
- Winton Group Ltdwas $282k
Ownership over time
Tracked managers listing it, at least.
| Quarter | Holders | Reported value | Buyers | Sellers |
|---|---|---|---|---|
| Q4 2019 | 3 | $23m | n.a. | n.a. |
| Q1 2020 | 3 | $14m | n.a. | n.a. |
| Q2 2020 | 2 | $6.2m | n.a. | n.a. |
| Q3 2020 | 3 | $6.9m | n.a. | n.a. |
| Q4 2020 | 1 | $5.6m | n.a. | n.a. |
| Q1 2021 | 3 | $52m | n.a. | n.a. |
| Q2 2021 | 3 | $33m | n.a. | n.a. |
| Q3 2021 | 2 | $2.7m | n.a. | n.a. |
| Q4 2021 | 3 | $6.1m | n.a. | n.a. |
| Q1 2022 | 3 | $24m | n.a. | n.a. |
| Q2 2022 | 2 | $17m | n.a. | n.a. |
| Q3 2022 | 3 | $20m | n.a. | n.a. |
| Q4 2022 | 3 | $33m | n.a. | n.a. |
| Q1 2023 | 5 | $511m | n.a. | n.a. |
| Q2 2023 | 6 | $454m | n.a. | n.a. |
| Q3 2023 | 7 | $71m | n.a. | n.a. |
| Q4 2023 | 7 | $112m | 5 | 1 |
| Q1 2024 | 4 | $77m | 3 | 1 |
| Q2 2024 | 4 | $18m | 4 | 0 |
| Q3 2024 | 4 | $32m | 4 | 0 |
| Q4 2024 | 3 | $11m | 2 | 2 |
| Q1 2025 | 2 | $11m | 2 | 0 |
| Q2 2025 | 3 | $125m | 1 | 1 |
| Q3 2025 | 1 | $104m | 1 | 2 |
| Q4 2025 | 6 | $223m | 21 | 9 |
| Q1 2026 | 1 | $132m | 11 | 19 |
| Q2 2026 | 1 | $101m | 15 | 11 |
Compare with…
Holders over time, buyers and sellers, and the managers holding both, side by side for up to four stocks.
OI and LIN →OI and GLW →OI and HWM →Choose a stock to compare with OI →
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 OI, latest filings →Back to the 13F Explorer →