- Quarter end
- 30 Jun 2026
- the date the book describes
- Filed
- 27 Oct 2026
- latest of these filings; the earliest 12 Aug 2026
- Managers listing it
- 21
- at least, of 95 tracked, among listed positions
- Comparable managers
- 91
- filed both Q1 2026 and Q2 2026; 2 listed it in both
- Shares listed
- 47,127,435
- combined, among listed positions
- Reported value
- $1.2bn
- combined, at the quarter end
AllianceBernstein LP. Values in this filing are at the previous quarter end's prices; its share count is the quarter end's.
Among the 91 comparable managers: 15 buyers (opened or added shares) and 7 sellers (trimmed or exited), at least, among listed positions. Their net change in shares was +8,708,016.
Managers listing MAC in Q2 2026
21 of 21 holders
Largest increases and reductions, by shares
Increases
- Fidelity (FMR LLC)existing position · 31,461,342 shares now+7,413,950
- Soros Fund Management LLCnew position · 1,938,506 shares now+1,938,506
- Renaissance Technologies LLCnew position · 762,487 shares now+762,487
- Arrowstreet Capital LPnew position · 427,680 shares now+427,680
- Woodline Partners LPexisting position · 815,532 shares now+231,407
Reductions
- Janus Henderson Group Ltdexisting position · 112,834 shares now-2,001,182
- Wellington Management Group LLPexisting position · 4,674,803 shares now-378,868
- Citadel Advisors LLCexisting position · 2,433,694 shares now-170,891
- Neuberger Berman Group LLCexisting position · 655,662 shares now-159,839
- Susquehanna International Group LLPexisting position · 35,877 shares now-50,569
New positions and exits
New (8)
Exited (1)
- Squarepoint Ops LLCwas $556k
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 →