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MARA · MARA Holdings, Inc.

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Market Cap
$4.49B
Shares
386.30M

Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.

Holders: 433
Total Value: $5,261,604,157
Total Shares: 378,807,239
Showing 1–100 of 487 holdings by value · page 1 of 5

Institutional Ownership Trend

26 quarters

Holder Concentration

Across 433 13F filers · Δ vs Mar 31, 2026
Top Holder
16.9%
Sep 2023 → Jun 2026 · range 13.0% – 21.8%
+0.8 pts
Top 5
40.5%
Sep 2023 → Jun 2026 · range 39.7% – 57.2%
−1.0 pts
Top 10
56.9%
Sep 2023 → Jun 2026 · range 53.4% – 72.7%
−2.6 pts
HHI
528
Sep 2023 → Jun 2026 · range 451 – 923
Broadly held−4

Quarterly Activity

vs Mar 31, 2026
New
89
Increased
155
Decreased
127
Sold Out
62
Unchanged
62
Holder count: +27
Institutional value: +74.3%
Shares held: +2.4%

Top Buyers

vs Mar 31, 2026
Institution Added Now Holds Open

Top Sellers

vs Mar 31, 2026
Institution Sold Now Holds Open

Top New Positions

vs Mar 31, 2026
Institution Acquired Value (USD) Open

Top Sold-Out Positions

vs Mar 31, 2026
Institution Previously Held Last Value (USD) Open
Showing 100 of 487
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Holder Value (USD) % of 13F Shares Open
Key facts CIK 1507605 CUSIP 565788106 13F (30d) 281 filings 279 filers Visit website Investor relations