- Quarter end
- 31 Dec 2025
- the date the book describes
- Filed
- 19 Feb 2026
- latest of these filings; the earliest 5 Feb 2026
- Managers listing it
- 17
- at least, of 95 tracked, among listed positions
- Comparable managers
- 92
- filed both Q3 2025 and Q4 2025; 1 listed it in both
- Shares listed
- 2,119,191
- combined, among listed positions
- Reported value
- $45m
- combined, at the quarter end
Among the 92 comparable managers: 11 buyers (opened or added shares) and 7 sellers (trimmed or exited), at least, among listed positions. Their net change in shares was +7,807.
Managers listing PKE in Q4 2025
17 of 17 holders
Largest increases and reductions, by shares
Increases
- Millennium Management LLCexisting position · 110,831 shares now+43,415
- Jane Street Group LLCexisting position · 60,359 shares now+34,369
- Arrowstreet Capital LPnew position · 31,638 shares now+31,638
- Citadel Advisors LLCexisting position · 44,528 shares now+26,752
- Brevan Howard Capital Management LPnew position · 20,977 shares now+20,977
Reductions
- Renaissance Technologies LLCexisting position · 840,040 shares now-53,652
- Squarepoint Ops LLCexisting position · 23,785 shares now-50,570
- Marshall Wace LLPexisting position · 51,074 shares now-40,206
- D. E. Shaw & Co.existing position · 35,499 shares now-15,128
- Invesco Ltdexisting position · 24,379 shares now-2,685
New positions and exits
New (2)
Exited (1)
- Two Sigma Advisers LPwas $234k
Ownership over time
Tracked managers listing it, at least.
| Quarter | Holders | Reported value | Buyers | Sellers |
|---|---|---|---|---|
| Q3 2019 | 1 | $15m | n.a. | n.a. |
| Q4 2019 | 1 | $13m | n.a. | n.a. |
| Q1 2020 | 1 | $10m | n.a. | n.a. |
| Q2 2020 | 2 | $12m | n.a. | n.a. |
| Q3 2020 | 1 | $8.9m | n.a. | n.a. |
| Q4 2020 | 1 | $11m | n.a. | n.a. |
| Q1 2021 | 1 | $9.2m | n.a. | n.a. |
| Q2 2021 | 1 | $10m | n.a. | n.a. |
| Q3 2021 | 1 | $9.2m | n.a. | n.a. |
| Q4 2021 | 1 | $8.8m | n.a. | n.a. |
| Q1 2022 | 1 | $8.6m | n.a. | n.a. |
| Q2 2022 | 1 | $8.4m | n.a. | n.a. |
| Q3 2022 | 1 | $7.2m | n.a. | n.a. |
| Q4 2022 | 1 | $8.7m | n.a. | n.a. |
| Q1 2023 | 1 | $8.6m | n.a. | n.a. |
| Q2 2023 | 1 | $9.1m | n.a. | n.a. |
| Q3 2023 | 1 | $10m | n.a. | n.a. |
| Q4 2023 | 1 | $9.7m | 1 | 0 |
| Q1 2024 | 1 | $11m | 0 | 0 |
| Q2 2024 | 1 | $9.2m | 1 | 0 |
| Q3 2024 | 1 | $8.8m | 0 | 0 |
| Q4 2024 | 1 | $9.9m | 0 | 0 |
| Q1 2025 | 1 | $9.3m | 1 | 0 |
| Q2 2025 | 1 | $10m | 1 | 0 |
| Q3 2025 | 1 | $14m | 0 | 1 |
| Q4 2025 | 1 | $15m | 11 | 7 |
| Q1 2026 | 1 | $19m | 10 | 9 |
| Q2 2026 | 1 | $26m | 11 | 9 |
Compare with…
Holders over time, buyers and sellers, and the managers holding both, side by side for up to four stocks.
PKE and RTX →PKE and BA →PKE and TDG →Choose a stock to compare with PKE →
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 PKE, latest filings →Back to the 13F Explorer →