MARA HOLDINGS INC: Ownership & Insider Activity
Hedge funds and institutional managers reporting a position in MARA HOLDINGS INC. Based on the most recent 13F filing from each holder, sourced from SEC EDGAR.
Reported Holders
6
13F filers
Aggregate Value
$46.9M
Across holders
Last Price
—
EOD close
Sector
—
GICS
Quarterly fund activity1 increased2 reduced1 exited
Full exits: Man Group plc
| Manager⇅ | Type⇅ | Shares⇅ | Market Value▼ | % of Total⇅ | % of Portfolio⇅ | Action⇅ | QoQ Change⇅ | Quarter⇅ |
|---|---|---|---|---|---|---|---|---|
| MILLENNIUM MANAGEMENT LLC CIK 0001273087 | Hedge Fund | 19.95M | $19.2M | 41.0% | 0.0% | Added | +$14.0M | Q2 2026 |
| CAPSTONE INVESTMENT ADVISORS, LLC CIK 0001426196 | Hedge Fund | 9.00M | $8.8M | 18.7% | 0.0% | Reduced | $-972K | Q2 2026 |
| MARSHALL WACE, LLP CIK 0001318757 | Hedge Fund | 7.00M | $6.8M | 14.4% | 0.0% | Reduced | $-2.0M | Q2 2026 |
| CITADEL ADVISORS LLC CIK 0001423053 | Hedge Fund | 5.00M | $4.9M | 10.4% | 0.0% | Unchanged | +$0 | Q2 2026 |
| Parallax Volatility Advisers, L.P. CIK 0001521001 | Hedge Fund | 5.00M | $4.8M | 10.3% | 0.0% | Unchanged | +$0 | Q2 2026 |
| Sculptor Capital LP CIK 0001054587 | Hedge Fund | 2.50M | $2.4M | 5.2% | 0.0% | Unchanged | +$0 | Q2 2026 |
Added
Hedge Fund
$19.2M· 41.0% of total· 0.0% port· 19.95M sh· +$14.0M QoQ· Q2 2026
Reduced
Hedge Fund
$8.8M· 18.7% of total· 0.0% port· 9.00M sh· $-972K QoQ· Q2 2026
Reduced
Hedge Fund
$6.8M· 14.4% of total· 0.0% port· 7.00M sh· $-2.0M QoQ· Q2 2026
Unchanged
Hedge Fund
$4.9M· 10.4% of total· 0.0% port· 5.00M sh· +$0 QoQ· Q2 2026
Unchanged
Hedge Fund
$4.8M· 10.3% of total· 0.0% port· 5.00M sh· +$0 QoQ· Q2 2026
Unchanged
Hedge Fund
$2.4M· 5.2% of total· 0.0% port· 2.50M sh· +$0 QoQ· Q2 2026