瑪拉控股有限公司
MX ˙ BMV ˙ US5657881067
SecurityMX:MARA / MARA Holdings, Inc.
InstitutionSei Investments Co
Latest Disclosed Ownership40,925 shares
Latest Disclosed Value $ 367,534
Sei Investments Co reports 0.39% decrease in ownership of MARA / MARA Holdings, Inc.

On February 13, 2026 - Sei Investments Co filed a 13F-HR form disclosing ownership of 40,925 shares of MARA Holdings, Inc. (MX:MARA) valued at $367,534 USD as of December 31, 2025. The entity filed a previous 13F-HR on November 13, 2025 disclosing 41,087 shares of MARA Holdings, Inc.. This represents a change in shares of -0.39% 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)
2026-02-13 2025-12-31 13F MARA HOLDINGS COM 565788106 40,925 -162 -0.39 368 -51.07 0.0004
2025-11-13 2025-09-30 13F MARA HOLDINGS COM 565788106 41,087 10,666 35.06 750 57.56 0.0008
2025-08-14 2025-06-30 13F MARA HOLDINGS COM 565788106 30,421 672 2.26 477 39.18 0.0006
2025-05-14 2025-03-31 13F/A-1 MARA HOLDINGS COM 565788106 29,749 16,113 118.17 342 50.00 0.0004
2025-05-13 2025-03-31 13F MARA HOLDINGS COM 565788106 13,708 72 230 0.0002
2025-02-11 2024-12-31 13F MARA HOLDINGS COM 565788106 13,636 0 0.00 229 3.17 0.0003
2024-11-12 2024-09-30 13F MARA HOLDINGS COM 565788106 13,636 3,488 34.37 221 9.95 0.0003
2024-08-13 2024-06-30 13F MARATHON DIGITAL HOLDINGS IN COM 565788106 10,148 10,148 201 0.0003
2024-05-07 2024-03-31 13F MARATHON DIGITAL HOLDINGS IN COM 565788106 0 -9,114 -100.00 0 -100.00
2024-02-14 2023-12-31 13F MARATHON DIGITAL HOLDINGS IN COM 565788106 9,114 9,114 214 0.0003
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.