- 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
- 26
- at least, of 95 tracked, among listed positions
- Comparable managers
- 91
- filed both Q4 2025 and Q1 2026; 1 listed it in both
- Shares listed
- 18,956,022
- combined, among listed positions
- Reported value
- $199m
- 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: 15 buyers (opened or added shares) and 14 sellers (trimmed or exited), at least, among listed positions. Their net change in shares was +640,020.
Managers listing PK in Q1 2026
26 of 26 holders
Largest increases and reductions, by shares
Increases
- Millennium Management LLCexisting position · 2,049,046 shares now+872,066
- Citadel Advisors LLCexisting position · 2,275,136 shares now+830,134
- Two Sigma Investments LPexisting position · 1,094,649 shares now+771,760
- Squarepoint Ops LLCexisting position · 710,419 shares now+355,850
- AQR Capital Management LLCexisting position · 5,145,115 shares now+322,941
Reductions
- Arrowstreet Capital LPexisting position · 1,420,540 shares now-945,247
- AllianceBernstein LPexisting position · 364,693 shares now-451,135
- Renaissance Technologies LLCexisting position · 369,152 shares now-397,700
- T. Rowe Price Associates Incexisting position · 153,967 shares now-291,453
- Jane Street Group LLCexisting position · 264,328 shares now-218,885
New positions and exits
New (3)
Exited (3)
- Tudor Investment Corpwas $2.6m
- Freestone Grove Partners LPwas $466k
- Hudson Bay Capital Management LPwas $242k
Ownership over time
Tracked managers listing it, at least.
| Quarter | Holders | Reported value | Buyers | Sellers |
|---|---|---|---|---|
| Q4 2016 | 1 | $4.1m | n.a. | n.a. |
| Q1 2017 | 6 | $281m | n.a. | n.a. |
| Q2 2017 | 6 | $267m | n.a. | n.a. |
| Q3 2017 | 6 | $384m | n.a. | n.a. |
| Q4 2017 | 10 | $599m | n.a. | n.a. |
| Q1 2018 | 6 | $1.0bn | n.a. | n.a. |
| Q2 2018 | 5 | $1.1bn | n.a. | n.a. |
| Q3 2018 | 5 | $1.1bn | n.a. | n.a. |
| Q4 2018 | 10 | $878m | n.a. | n.a. |
| Q1 2019 | 8 | $946m | n.a. | n.a. |
| Q2 2019 | 11 | $606m | n.a. | n.a. |
| Q3 2019 | 6 | $615m | n.a. | n.a. |
| Q4 2019 | 4 | $673m | n.a. | n.a. |
| Q1 2020 | 6 | $111m | n.a. | n.a. |
| Q2 2020 | 4 | $37m | n.a. | n.a. |
| Q3 2020 | 1 | $7.2m | n.a. | n.a. |
| Q1 2021 | 1 | $2.3m | n.a. | n.a. |
| Q2 2021 | 3 | $49m | n.a. | n.a. |
| Q3 2021 | 4 | $61m | n.a. | n.a. |
| Q4 2021 | 4 | $115m | n.a. | n.a. |
| Q1 2022 | 7 | $177m | n.a. | n.a. |
| Q2 2022 | 6 | $113m | n.a. | n.a. |
| Q3 2022 | 4 | $36m | n.a. | n.a. |
| Q4 2022 | 5 | $34m | n.a. | n.a. |
| Q1 2023 | 5 | $54m | n.a. | n.a. |
| Q2 2023 | 4 | $76m | n.a. | n.a. |
| Q3 2023 | 6 | $120m | n.a. | n.a. |
| Q4 2023 | 6 | $118m | 5 | 1 |
| Q1 2024 | 8 | $200m | 6 | 1 |
| Q2 2024 | 7 | $228m | 5 | 1 |
| Q3 2024 | 6 | $197m | 1 | 5 |
| Q4 2024 | 3 | $127m | 1 | 2 |
| Q1 2025 | 5 | $156m | 4 | 0 |
| Q2 2025 | 5 | $176m | 3 | 2 |
| Q3 2025 | 5 | $146m | 2 | 4 |
| Q4 2025 | 1 | $3.5m | 21 | 8 |
| Q1 2026 | 1 | $3.3m | 15 | 14 |
| Q2 2026 | 1 | $5.9m | 15 | 11 |
Compare with…
Holders over time, buyers and sellers, and the managers holding both, side by side for up to four stocks.
PK and AMZN →PK and TSLA →PK and HD →Choose a stock to compare with PK →
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 PK, latest filings →Back to the 13F Explorer →