- Quarter end
- 30 Jun 2026
- the date the book describes
- Filed
- 27 Oct 2026
- latest of these filings; the earliest 3 Aug 2026
- Managers listing it
- 21
- at least, of 95 tracked, among listed positions
- Comparable managers
- 91
- filed both Q1 2026 and Q2 2026; 1 listed it in both
- Shares listed
- 26,532,200
- combined, among listed positions
- Reported value
- $366m
- 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: 17 buyers (opened or added shares) and 9 sellers (trimmed or exited), at least, among listed positions. Their net change in shares was +11,673,071.
Managers listing MARA in Q2 2026
21 of 21 holders
Largest increases and reductions, by shares
Increases
- D. E. Shaw & Co.existing position · 10,376,069 shares now+9,057,890
- Two Sigma Investments LPnew position · 2,569,038 shares now+2,569,038
- Tudor Investment Corpexisting position · 1,479,564 shares now+1,352,832
- Susquehanna International Group LLPexisting position · 3,336,026 shares now+1,215,521
- Renaissance Technologies LLCnew position · 1,111,938 shares now+1,111,938
Reductions
- Citadel Advisors LLCexisting position · 33,269 shares now-931,351
- Invesco Ltdexisting position · 1,271,410 shares now-334,284
- Quantbot Technologies LPexisting position · 164,041 shares now-211,345
New positions and exits
New (5)
Exited (6)
- Capital Research Global Investorswas $27m
- Marshall Wace LLPwas $7.1m
- Wellington Management Group LLPwas $2.9m
- ExodusPoint Capital Management LPwas $2.3m
- Squarepoint Ops LLCwas $1.1m
- Jane Street Group LLCwas $1.1m
Ownership over time
Tracked managers listing it, at least.
| Quarter | Holders | Reported value | Buyers | Sellers |
|---|---|---|---|---|
| Q1 2021 | 3 | $148m | n.a. | n.a. |
| Q2 2021 | 4 | $58m | n.a. | n.a. |
| Q3 2021 | 2 | $4.7m | n.a. | n.a. |
| Q4 2021 | 2 | $47m | n.a. | n.a. |
| Q1 2022 | 2 | $5.9m | n.a. | n.a. |
| Q2 2022 | 2 | $928k | n.a. | n.a. |
| Q3 2022 | 1 | $2k | n.a. | n.a. |
| Q4 2022 | 1 | $1k | n.a. | n.a. |
| Q1 2023 | 1 | $2k | n.a. | n.a. |
| Q4 2023 | 3 | $272m | 3 | 0 |
| Q1 2024 | 2 | $186m | 1 | 2 |
| Q2 2024 | 2 | $137m | 1 | 1 |
| Q4 2024 | 1 | $9.3m | 1 | 0 |
| Q1 2025 | 3 | $35m | 3 | 0 |
| Q2 2025 | 3 | $79m | 2 | 0 |
| Q3 2025 | 11 | $683m | 11 | 0 |
| Q4 2025 | 3 | $74m | 10 | 22 |
| Q1 2026 | 2 | $30m | 13 | 13 |
| Q2 2026 | 4 | $170m | 17 | 9 |
Compare with…
Holders over time, buyers and sellers, and the managers holding both, side by side for up to four stocks.
MARA and V →MARA and AXP →MARA and BAC →Choose a stock to compare with MARA →
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 MARA, latest filings →Back to the 13F Explorer →