마라 홀딩스 주식회사
MX ˙ BMV ˙ US5657881067
SecurityMX:MARA / MARA Holdings, Inc.
InstitutionSecond Line Capital, LLC
Latest Disclosed Ownership263,802 shares
Latest Disclosed Value $ 3,162,986
Second Line Capital, LLC reports 5.99% increase in ownership of MARA / MARA Holdings, Inc.

On May 15, 2026 - Second Line Capital, LLC filed a 13F-HR form disclosing ownership of 263,802 shares of MARA Holdings, Inc. (MX:MARA) valued at $3,162,986 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 248,887 shares of MARA Holdings, Inc.. This represents a change in shares of 5.99% during the quarter.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date
Effective
Date
Form Security Class ID Avg Price
Paid (Est)
Reported
Shares
ΔShares ΔShares
(%)
Reported
Value
(x1000)
ΔValue
(%)
Alloc
(%)
ΔAlloc ΔAlloc (%) Cost Basis
(x1000)
Unrealized
Gain/Loss
(x1000)
2026-05-15 2026-03-31 13F MARA HOLDINGS INC COM Stock 565788106 263,802 14,915 5.99 3,163 41.48 0.5991
2026-02-17 2025-12-31 13F MARA HOLDINGS COM 565788106 248,887 -109 -0.04 2,235 -50.84 0.4593
2025-11-19 2025-09-30 13F MARA HOLDINGS COM 565788106 248,996 11,747 4.95 4,547 22.20 0.9411
2025-08-18 2025-06-30 13F MARA HOLDINGS COM 565788106 237,249 6,139 2.66 3,720 40.01 0.8643
2025-05-15 2025-03-31 13F MARA HOLDINGS COM 565788106 231,110 -33 -0.01 2,658 -31.45 0.6849
2025-02-14 2024-12-31 13F MARA HOLDINGS COM 565788106 231,143 26,633 13.02 3,876 16.85 1.0450
2024-11-19 2024-09-30 13F MARA HOLDINGS COM 565788106 204,510 0 0.00 3,317 -18.28 0.9040
2024-08-16 2024-06-30 13F MARATHON DIGITAL HOLDINGS IN COM 565788106 204,510 204,510 4,060 1.2419
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.