- Quarter end
- 31 Dec 2025
- the date the book describes
- Filed
- 27 Oct 2026
- latest of these filings; the earliest 4 Feb 2026
- Managers listing it
- 16
- at least, of 95 tracked, among listed positions
- Comparable managers
- 92
- filed both Q3 2025 and Q4 2025; 4 listed it in both
- Shares listed
- 37,060,902
- combined, among listed positions
- Reported value
- $684m
- combined, at the quarter end
Among the 92 comparable managers: 12 buyers (opened or added shares) and 14 sellers (trimmed or exited), at least, among listed positions. Their net change in shares was +74,792.
Managers listing MAC in Q4 2025
16 of 16 holders
Largest increases and reductions, by shares
Increases
- Wellington Management Group LLPexisting position · 3,675,803 shares now+2,142,737
- Schonfeld Strategic Advisors LLCnew position · 890,043 shares now+890,043
- Verition Fund Management LLCexisting position · 974,969 shares now+821,782
- Citadel Advisors LLCexisting position · 4,425,546 shares now+511,439
- Neuberger Berman Group LLCexisting position · 872,785 shares now+104,182
Reductions
- Millennium Management LLCexisting position · 1,666,879 shares now-1,409,368
- Fidelity (FMR LLC)existing position · 19,750,982 shares now-1,342,446
- Quantbot Technologies LPexisting position · 316 shares now-214,326
- Janus Henderson Group Ltdexisting position · 2,251,963 shares now-126,866
New positions and exits
Exited (10)
- Point72 Asset Management LPwas $13m
- Jane Street Group LLCwas $5.9m
- Renaissance Technologies LLCwas $3.7m
- Squarepoint Ops LLCwas $1.7m
- Balyasny Asset Management LLCwas $1.3m
- Susquehanna International Group LLPwas $568k
- Caxton Associates LLPwas $430k
- Marshall Wace LLPwas $328k
- Tudor Investment Corpwas $290k
- Brevan Howard Capital Management LPwas $250k
Ownership over time
Tracked managers listing it, at least.
| Quarter | Holders | Reported value | Buyers | Sellers |
|---|---|---|---|---|
| Q2 2013 | 11 | $1.9bn | n.a. | n.a. |
| Q3 2013 | 7 | $1.4bn | n.a. | n.a. |
| Q4 2013 | 4 | $1.2bn | n.a. | n.a. |
| Q1 2014 | 4 | $1.1bn | n.a. | n.a. |
| Q2 2014 | 6 | $1.2bn | n.a. | n.a. |
| Q3 2014 | 5 | $741m | n.a. | n.a. |
| Q4 2014 | 9 | $1.2bn | n.a. | n.a. |
| Q1 2015 | 9 | $903m | n.a. | n.a. |
| Q2 2015 | 6 | $1.0bn | n.a. | n.a. |
| Q3 2015 | 6 | $1.2bn | n.a. | n.a. |
| Q4 2015 | 5 | $1.3bn | n.a. | n.a. |
| Q1 2016 | 13 | $1.3bn | n.a. | n.a. |
| Q2 2016 | 7 | $1.4bn | n.a. | n.a. |
| Q3 2016 | 9 | $1.3bn | n.a. | n.a. |
| Q4 2016 | 7 | $1.2bn | n.a. | n.a. |
| Q1 2017 | 4 | $834m | n.a. | n.a. |
| Q2 2017 | 7 | $762m | n.a. | n.a. |
| Q3 2017 | 7 | $833m | n.a. | n.a. |
| Q4 2017 | 10 | $841m | n.a. | n.a. |
| Q1 2018 | 7 | $637m | n.a. | n.a. |
| Q2 2018 | 11 | $587m | n.a. | n.a. |
| Q3 2018 | 6 | $514m | n.a. | n.a. |
| Q4 2018 | 8 | $440m | n.a. | n.a. |
| Q1 2019 | 9 | $589m | n.a. | n.a. |
| Q2 2019 | 9 | $370m | n.a. | n.a. |
| Q3 2019 | 4 | $350m | n.a. | n.a. |
| Q4 2019 | 5 | $60m | n.a. | n.a. |
| Q2 2020 | 4 | $26m | n.a. | n.a. |
| Q3 2020 | 2 | $737k | n.a. | n.a. |
| Q4 2020 | 1 | $4.2m | n.a. | n.a. |
| Q1 2021 | 6 | $82m | n.a. | n.a. |
| Q2 2021 | 6 | $136m | n.a. | n.a. |
| Q3 2021 | 5 | $106m | n.a. | n.a. |
| Q4 2021 | 4 | $47m | n.a. | n.a. |
| Q1 2022 | 4 | $43m | n.a. | n.a. |
| Q2 2022 | 4 | $25m | n.a. | n.a. |
| Q3 2022 | 3 | $24m | n.a. | n.a. |
| Q4 2022 | 1 | $2.7m | n.a. | n.a. |
| Q1 2023 | 2 | $3.2m | n.a. | n.a. |
| Q2 2023 | 2 | $3.6m | n.a. | n.a. |
| Q3 2023 | 2 | $18m | n.a. | n.a. |
| Q4 2023 | 2 | $5.1m | 2 | 0 |
| Q1 2024 | 5 | $26m | 5 | 0 |
| Q2 2024 | 7 | $80m | 6 | 1 |
| Q3 2024 | 4 | $72m | 4 | 1 |
| Q4 2024 | 5 | $279m | 2 | 4 |
| Q1 2025 | 5 | $80m | 2 | 3 |
| Q2 2025 | 4 | $56m | 2 | 2 |
| Q3 2025 | 5 | $67m | 4 | 1 |
| Q4 2025 | 5 | $97m | 12 | 14 |
| Q1 2026 | 2 | $51m | 6 | 12 |
| Q2 2026 | 5 | $868m | 15 | 7 |
Compare with…
Holders over time, buyers and sellers, and the managers holding both, side by side for up to four stocks.
MAC and WELL →MAC and EQIX →MAC and PLD →Choose a stock to compare with MAC →
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 MAC, latest filings →Back to the 13F Explorer →