Who owns MARA Holdings (MARA)?
97 holders named in SEC filings declare between 59.1% and 72.0% of MARA Holdings' shares outstanding, as of Oct 1, 2026. The largest are BlackRock (16.6%), Vanguard (12.1%) and State Street (4.1%); the five largest hold 38.3% together. Another 320 institutions hold small positions worth 2.5%. At least 25.5% of the shares appear in no ownership filing: investors who do not have to report, mostly individuals. From Mar 31, 2026 to Jun 30, 2026, institutions that filed both quarters bought 14.6% and sold 6.3% of the shares, a net purchase of 8.3%; 73 opened a position, 142 added, 111 reduced and 55 sold out. Biggest buyers: D. E. Shaw (+9.1M shares) and Dimensional (+4.4M shares). Biggest sellers: Capital Group (-3.3M) and HRT FINANCIAL LP (-3.1M). Directors and officers, from their latest Form 4: Frederick G. Thiel (1.1%) and Salman Hassan Khan (0.50%). Over time, 399 managers declared MARA Holdings in their 13F for Q2 2026, against 8 for Q4 2019: together at most 73.4% of the shares outstanding, against 0.05%.
| Holder | Filing | Share of capital | As of | Holding since (13F) |
|---|---|---|---|---|
| BlackRock | 13F | 16.6% | Jun 30, 2026 | Q4 2019 or earlier |
| Vanguard | 13F | 12.1% | Jun 30, 2026 | Q4 2019 or earlier |
| State Street | 13F | 4.1% | Jun 30, 2026 | Q4 2020 |
| Geode Capital | 13F | 2.8% | Jun 30, 2026 | Q4 2019 or earlier |
| D. E. Shaw | 13F | 2.7% | Jun 30, 2026 | Q3 2025 |
| Marex Group plc | 13F | 2.1% | Jun 30, 2026 | Q4 2023 |
| Morgan Stanley | 13F | 1.8% | Jun 30, 2026 | Q4 2019 or earlier |
| UBS | 13F | 1.6% | Jun 30, 2026 | Q1 2021 |
| Bank of America | 13F | 1.6% | Jun 30, 2026 | Q3 2020 |
| Goldman Sachs | 13F | 1.3% | Jun 30, 2026 | Q4 2020 |
| Charles Schwab | 13F | 1.2% | Jun 30, 2026 | Q4 2020 |
| Dimensional | 13F | 1.2% | Jun 30, 2026 | Q1 2026 |
| Frederick G. Thiel | Form 4 | 1.1% | Oct 1, 2026 | — |
| Northern Trust | 13F | 0.96% | Jun 30, 2026 | Q2 2020 |
| VanEck | 13F | 0.90% | Jun 30, 2026 | Q2 2021 |
| HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND | 13F | 0.87% | Jun 30, 2026 | Q2 2026 |
| Susquehanna | 13F | 0.86% | Jun 30, 2026 | Q2 2020 |
| SEGALL BRYANT & HAMILL, LLC | 13F | 0.71% | Jun 30, 2026 | Q2 2026 |
| BNY | 13F | 0.69% | Jun 30, 2026 | Q4 2020 |
| Clear Street Group Inc. | 13F | 0.69% | Jun 30, 2026 | Q3 2025 |
| Two Sigma | 13F | 0.67% | Jun 30, 2026 | Q2 2025 |
| JPMorgan | 13F | 0.65% | Jun 30, 2026 | Q1 2021 |
| Quadrature Capital Ltd | 13F | 0.62% | Jun 30, 2026 | Q4 2025 |
| CANADA PENSION PLAN INVESTMENT BOARD | 13F | 0.60% | Jun 30, 2026 | Q2 2026 |
| Salman Hassan Khan | Form 4 | 0.50% | Sep 30, 2026 | — |
MARA Holdings institutional ownership over time
| Quarter | 13F managers | Share of the company (upper bound) | Value declared | Held by stock pickers |
|---|---|---|---|---|
| Q4 2019 | 8 | 0.05% | $157,000.00 | 11.3% |
| Q4 2020 | 62 | 9.9% | $109.3M | 30.4% |
| Q4 2021 | 220 | 40.6% | $1.4B | 24.6% |
| Q4 2022 | 207 | 43.9% | $175.5M | 26.1% |
| Q4 2023 | 263 | 46.9% | $2.5B | 23.5% |
| Q4 2024 | 351 | 63.2% | $3.4B | 22.1% |
| Q4 2025 | 390 | 66.3% | $2.3B | 22.4% |
| Q2 2026 | 399 | 73.4% | $3.9B | 28.4% |
From SEC Form 13F, every quarter since the end of 2019, read like the current quarter: entities of a house summed, a value contradicting its share count set aside. The share of the company is an upper bound — two managers can declare the same shares — over the shares outstanding at that date.