- Quarter end
- 30 Jun 2025
- the date the book describes
- Filed
- 14 Aug 2025
- latest of these filings; the earliest 6 Aug 2025
- Managers listing it
- 7
- at least, of 95 tracked, among listed positions
- Comparable managers
- 95
- filed both Q1 2025 and Q2 2025; 7 listed it in both
- Shares listed
- 5,273,600
- combined, among listed positions
- Reported value
- $574m
- combined, at the quarter end
Among the 95 comparable managers: 3 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 STN in Q2 2025
7 of 7 holders
| Action | Filing | |||||
|---|---|---|---|---|---|---|
| AllianceBernstein LP | 3,449,311 | $375m | 0.12% | Added | +1,558,703 | 14 Aug 2025 (the filing on sec.gov) |
| Janus Henderson Group Ltd | 890,975 | $98m | under 0.1% | Trimmed | -41,655 | 14 Aug 2025 (the filing on sec.gov) |
| Man Group PLC | 640,911 | $70m | 0.13% | Added | +51,204 | 14 Aug 2025 (the filing on sec.gov) |
| Acadian Asset Management LLC | 249,937 | $27m | 0.06% | Added | +87,900 | 7 Aug 2025 (the filing on sec.gov) |
| PDT Partners LLC | 21,838 | $2.4m | 0.13% | Held | 0 | 14 Aug 2025 (the filing on sec.gov) |
| Bridgewater Associates LP | 20,225 | $2.2m | under 0.1% | Trimmed | -5,156 | 13 Aug 2025 (the filing on sec.gov) |
| Baillie Gifford & Co | 403 | $44k | under 0.1% | Held | 0 | 6 Aug 2025 (the filing on sec.gov) |
Largest increases and reductions, by shares
Increases
- AllianceBernstein LPexisting position · 3,449,311 shares now+1,558,703
- Acadian Asset Management LLCexisting position · 249,937 shares now+87,900
- Man Group PLCexisting position · 640,911 shares now+51,204
Reductions
- Janus Henderson Group Ltdexisting position · 890,975 shares now-41,655
- Bridgewater Associates LPexisting position · 20,225 shares now-5,156
New positions and exits
New (0)
No new position among listed positions.
Exited (0)
No exit shown by a manager’s own filing.
Ownership over time
Tracked managers listing it, at least.
| Quarter | Holders | Reported value | Buyers | Sellers |
|---|---|---|---|---|
| Q3 2013 | 1 | $273m | n.a. | n.a. |
| Q4 2013 | 1 | $375m | n.a. | n.a. |
| Q1 2014 | 1 | $355m | n.a. | n.a. |
| Q2 2014 | 1 | $370m | n.a. | n.a. |
| Q3 2014 | 1 | $380m | n.a. | n.a. |
| Q4 2014 | 1 | $27m | n.a. | n.a. |
| Q1 2015 | 1 | $53m | n.a. | n.a. |
| Q2 2015 | 1 | $65m | n.a. | n.a. |
| Q3 2015 | 1 | $47m | n.a. | n.a. |
| Q4 2015 | 1 | $53m | n.a. | n.a. |
| Q1 2016 | 1 | $37m | n.a. | n.a. |
| Q2 2016 | 1 | $27m | n.a. | n.a. |
| Q4 2016 | 1 | $20m | n.a. | n.a. |
| Q1 2017 | 1 | $25m | n.a. | n.a. |
| Q2 2017 | 1 | $28m | n.a. | n.a. |
| Q3 2017 | 1 | $27m | n.a. | n.a. |
| Q4 2017 | 1 | $27m | n.a. | n.a. |
| Q3 2018 | 1 | $14m | n.a. | n.a. |
| Q4 2019 | 3 | $64m | n.a. | n.a. |
| Q1 2020 | 3 | $72m | n.a. | n.a. |
| Q2 2020 | 1 | $48m | n.a. | n.a. |
| Q3 2020 | 2 | $68m | n.a. | n.a. |
| Q4 2020 | 2 | $13m | n.a. | n.a. |
| Q1 2021 | 1 | $1.5m | n.a. | n.a. |
| Q3 2021 | 2 | $43m | n.a. | n.a. |
| Q4 2021 | 2 | $64m | n.a. | n.a. |
| Q1 2022 | 2 | $47m | n.a. | n.a. |
| Q2 2022 | 1 | $16m | n.a. | n.a. |
| Q3 2022 | 1 | $14m | n.a. | n.a. |
| Q4 2023 | 2 | $32m | 2 | 0 |
| Q1 2024 | 2 | $38m | 2 | 0 |
| Q2 2024 | 4 | $164m | 4 | 0 |
| Q3 2024 | 4 | $187m | 3 | 1 |
| Q4 2024 | 6 | $253m | 6 | 0 |
| Q1 2025 | 9 | $335m | 8 | 1 |
| Q2 2025 | 7 | $574m | 3 | 2 |
| Q3 2025 | 7 | $601m | 5 | 1 |
| Q4 2025 | 8 | $660m | 21 | 5 |
| Q1 2026 | 8 | $635m | 13 | 12 |
| Q2 2026 | 6 | $504m | 15 | 12 |
Compare with…
Holders over time, buyers and sellers, and the managers holding both, side by side for up to four stocks.
STN and V →STN and MA →STN and MCO →Choose a stock to compare with STN →
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 STN, latest filings →Back to the 13F Explorer →