- Quarter end
- 30 Sep 2025
- the date the book describes
- Filed
- 17 Nov 2025
- latest of these filings; the earliest 29 Oct 2025
- Managers listing it
- 9
- at least, of 95 tracked, among listed positions
- Comparable managers
- 95
- filed both Q2 2025 and Q3 2025; 8 listed it in both
- Shares listed
- 36,334,036
- combined, among listed positions
- Reported value
- $636m
- combined, at the quarter end
Among the 95 comparable managers: 6 buyers (opened or added shares) and 2 sellers (trimmed or exited), at least, among listed positions. Their net change in shares is not known from listed positions, because at least one of them lists it in only one of the two quarters.
Managers listing ACI in Q3 2025
9 of 9 holders
| Action | Filing | |||||
|---|---|---|---|---|---|---|
| Citadel Advisors LLC | 12,546,256 | $220m | under 0.1% | Added | n.a. | 14 Nov 2025 (the filing on sec.gov) |
| MFS Investment Management | 9,388,320 | $164m | 0.05% | Added | +1,410,778 | 29 Oct 2025 (the filing on sec.gov) |
| AQR Capital Management LLC | 6,283,584 | $110m | 0.07% | Added | +813,190 | 14 Nov 2025 (the filing on sec.gov) |
| Southeastern Asset Management Inc | 4,943,869 | $87m | 4.42% | Added | +1,481,692 | 14 Nov 2025 (the filing on sec.gov) |
| Voloridge Investment Management LLC | 1,255,233 | $22m | 0.07% | Trimmed | -922,481 | 14 Nov 2025 (the filing on sec.gov) |
| Freestone Grove Partners LP | 787,360 | $14m | 0.10% | Held | 0 | 14 Nov 2025 (the filing on sec.gov) |
| Verition Fund Management LLC | 730,114 | $13m | 0.05% | Added | +114,357 | 14 Nov 2025 (the filing on sec.gov) |
| Holocene Advisors LP | 263,048 | $4.6m | under 0.1% | Added | +116,036 | 14 Nov 2025 (the filing on sec.gov) |
| Caxton Associates LLP | 136,252 | $2.4m | 0.06% | Held | 0 | 17 Nov 2025 (the filing on sec.gov) |
Largest increases and reductions, by shares
Increases
- Southeastern Asset Management Incexisting position · 4,943,869 shares now+1,481,692
- MFS Investment Managementexisting position · 9,388,320 shares now+1,410,778
- AQR Capital Management LLCexisting position · 6,283,584 shares now+813,190
- Holocene Advisors LPexisting position · 263,048 shares now+116,036
- Verition Fund Management LLCexisting position · 730,114 shares now+114,357
Reductions
- Voloridge Investment Management LLCexisting position · 1,255,233 shares now-922,481
New positions and exits
New (0)
No new position among listed positions.
Exited (1)
- Maverick Capital Ltdwas $1.4m
Ownership over time
Tracked managers listing it, at least.
| Quarter | Holders | Reported value | Buyers | Sellers |
|---|---|---|---|---|
| Q2 2020 | 10 | $257m | n.a. | n.a. |
| Q3 2020 | 2 | $93m | n.a. | n.a. |
| Q4 2020 | 3 | $115m | n.a. | n.a. |
| Q1 2021 | 2 | $116m | n.a. | n.a. |
| Q2 2021 | 3 | $113m | n.a. | n.a. |
| Q3 2021 | 3 | $182m | n.a. | n.a. |
| Q4 2021 | 9 | $285m | n.a. | n.a. |
| Q1 2022 | 18 | $558m | n.a. | n.a. |
| Q2 2022 | 21 | $1.6bn | n.a. | n.a. |
| Q3 2022 | 17 | $1.3bn | n.a. | n.a. |
| Q4 2022 | 14 | $456m | n.a. | n.a. |
| Q1 2023 | 15 | $816m | n.a. | n.a. |
| Q2 2023 | 13 | $664m | n.a. | n.a. |
| Q3 2023 | 13 | $590m | n.a. | n.a. |
| Q4 2023 | 13 | $559m | 5 | 8 |
| Q1 2024 | 12 | $656m | 8 | 5 |
| Q2 2024 | 12 | $515m | 6 | 6 |
| Q3 2024 | 13 | $498m | 8 | 6 |
| Q4 2024 | 18 | $1.2bn | 13 | 6 |
| Q1 2025 | 13 | $1.8bn | 7 | 7 |
| Q2 2025 | 14 | $1.3bn | 9 | 5 |
| Q3 2025 | 9 | $636m | 6 | 2 |
| Q4 2025 | 10 | $548m | 16 | 20 |
| Q1 2026 | 10 | $733m | 18 | 16 |
| Q2 2026 | 5 | $372m | 17 | 17 |
Compare with…
Holders over time, buyers and sellers, and the managers holding both, side by side for up to four stocks.
ACI and PM →ACI and KO →ACI and COST →Choose a stock to compare with ACI →
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 ACI, latest filings →Back to the 13F Explorer →