- Quarter end
- 31 Dec 2025
- the date the book describes
- Filed
- 27 Oct 2026
- latest of these filings; the earliest 10 Feb 2026
- Managers listing it
- 22
- 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
- 3,427,928
- combined, among listed positions
- Reported value
- $132m
- combined, at the quarter end
Among the 92 comparable managers: 14 buyers (opened or added shares) and 10 sellers (trimmed or exited), at least, among listed positions. Their net change in shares was +201,584.
Managers listing AMSF in Q4 2025
22 of 22 holders
Largest increases and reductions, by shares
Increases
- Marshall Wace LLPexisting position · 164,648 shares now+95,687
- Two Sigma Advisers LPexisting position · 134,068 shares now+75,768
- Point72 Asset Management LPexisting position · 83,470 shares now+54,970
- Two Sigma Investments LPexisting position · 197,644 shares now+53,284
- ExodusPoint Capital Management LPnew position · 40,104 shares now+40,104
Reductions
- Jane Street Group LLCexisting position · 36,181 shares now-44,905
- Citadel Advisors LLCexisting position · 126,296 shares now-42,163
- AQR Capital Management LLCexisting position · 68,257 shares now-38,493
- Invesco Ltdexisting position · 117,176 shares now-5,723
- Brevan Howard Capital Management LPexisting position · 17,531 shares now-1,592
New positions and exits
New (3)
Exited (4)
- Squarepoint Ops LLCwas $1.1m
- Man Group PLCwas $833k
- Susquehanna International Group LLPwas $422k
- Quantbot Technologies LPwas $270k
Ownership over time
Tracked managers listing it, at least.
| Quarter | Holders | Reported value | Buyers | Sellers |
|---|---|---|---|---|
| Q2 2016 | 1 | $39m | n.a. | n.a. |
| Q3 2016 | 1 | $44m | n.a. | n.a. |
| Q4 2016 | 1 | $51m | n.a. | n.a. |
| Q1 2017 | 1 | $66m | n.a. | n.a. |
| Q2 2017 | 1 | $69m | n.a. | n.a. |
| Q3 2017 | 1 | $76m | n.a. | n.a. |
| Q4 2017 | 1 | $77m | n.a. | n.a. |
| Q1 2018 | 1 | $67m | n.a. | n.a. |
| Q2 2018 | 1 | $67m | n.a. | n.a. |
| Q3 2018 | 1 | $70m | n.a. | n.a. |
| Q4 2018 | 3 | $62m | n.a. | n.a. |
| Q1 2019 | 2 | $63m | n.a. | n.a. |
| Q2 2019 | 2 | $77m | n.a. | n.a. |
| Q3 2019 | 2 | $101m | n.a. | n.a. |
| Q4 2019 | 1 | $105m | n.a. | n.a. |
| Q1 2020 | 1 | $102m | n.a. | n.a. |
| Q2 2020 | 2 | $109m | n.a. | n.a. |
| Q3 2020 | 2 | $95m | n.a. | n.a. |
| Q4 2020 | 1 | $91m | n.a. | n.a. |
| Q1 2021 | 1 | $102m | n.a. | n.a. |
| Q2 2021 | 1 | $91m | n.a. | n.a. |
| Q3 2021 | 1 | $85m | n.a. | n.a. |
| Q4 2021 | 1 | $79m | n.a. | n.a. |
| Q1 2022 | 1 | $71m | n.a. | n.a. |
| Q2 2022 | 1 | $72m | n.a. | n.a. |
| Q3 2022 | 1 | $65m | n.a. | n.a. |
| Q4 2022 | 2 | $71m | n.a. | n.a. |
| Q1 2023 | 2 | $66m | n.a. | n.a. |
| Q2 2023 | 2 | $70m | n.a. | n.a. |
| Q3 2023 | 2 | $94m | n.a. | n.a. |
| Q4 2023 | 1 | $87m | 0 | 1 |
| Q1 2024 | 1 | $93m | 1 | 0 |
| Q2 2024 | 2 | $80m | 1 | 1 |
| Q3 2024 | 2 | $88m | 1 | 1 |
| Q4 2024 | 2 | $94m | 1 | 1 |
| Q1 2025 | 2 | $95m | 0 | 2 |
| Q2 2025 | 2 | $77m | 1 | 1 |
| Q3 2025 | 1 | $79m | 1 | 0 |
| Q4 2025 | 1 | $69m | 14 | 10 |
| Q1 2026 | 1 | $58m | 12 | 9 |
Compare with…
Holders over time, buyers and sellers, and the managers holding both, side by side for up to four stocks.
AMSF and V →AMSF and AXP →AMSF and BAC →Choose a stock to compare with AMSF →
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 AMSF, latest filings →Back to the 13F Explorer →