MARA Holdings, Inc.
MX ˙ BMV ˙ US5657881067
SecurityMX:MARA / MARA Holdings, Inc.
InstitutionIMC-Chicago, LLC
Latest Disclosed Ownership1,108,766 shares
Latest Disclosed Value $ 9,047,531
IMC-Chicago, LLC ownership in MARA / MARA Holdings, Inc.

On May 5, 2026 - IMC-Chicago, LLC filed a 13F-HR form disclosing ownership of 1,108,766 shares of MARA Holdings, Inc. (MX:MARA) valued at $9,047,531 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 29, 2026 disclosing 764,611 shares of MARA Holdings, Inc.. This represents a change in shares of 45.01% during the quarter.

IMC-Chicago, LLC has a history of taking positions in derivatives of the underlying security (MARA) in the form of stock options. The firm currently holds call options representing 4,437,500 of underlying shares valued at $36,210,000 USD and put options representing 5,105,000 of underlying shares valued at $41,656,800 USD .

Note: prior versions of this page mistakenly stated that the share values represented the number of options, not the number of underlying shares. For more information on the data backing these reports, please see the SEC document Frequently Asked Questions About Form 13F.

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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Institutional Put/Call Ratios
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In addition to reporting standard equity and debt issues, institutions with more than 100MM assets under management must also disclose their put and call option holdings. Since put options generally indicate negative sentiment, and call options indicate positive sentiment, we can get a sense of the overall institutional sentiment by plotting the ratio of puts to calls. The chart to the right plots the historical put/call ratio for this instrument.

Using Put/Call Ratio as an indicator of investor sentiment overcomes one of the key deficiencies of using total institutional ownership, which is that a significant amount of assets under management are invested passively to track indices. Passively-managed funds do not typically buy options, so the put/call ratio indicator more closely tracks the sentiment of actively-managed funds.

MX:MARA / MARA Holdings, Inc. Historical Put/Call Ratio
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)
2026-05-05 2026-03-31 13F MARA HOLDINGS COM 565788106 1,108,766 344,155 45.01 9,048 31.77 0.0033
2026-01-29 2025-12-31 13F MARA HOLDINGS COM 565788106 764,611 -151,894 -16.57 6,866 -58.97 0.0025
2025-11-04 2025-09-30 13F MARA HOLDINGS COM 565788106 916,505 633,446 223.79 16,735 277.08 0.0061
2025-07-22 2025-06-30 13F MARA HOLDINGS COM 565788106 283,059 51,210 22.09 4,438 66.47 0.0020
2025-04-14 2025-03-31 13F MARA HOLDINGS COM 565788106 231,849 -447,947 -65.89 2,666 -76.61 0.0015
2025-01-27 2024-12-31 13F MARA HOLDINGS COM 565788106 679,796 490,286 258.71 11,400 270.97 0.0053
2024-10-25 2024-09-30 13F MARA HOLDINGS COM 565788106 189,510 50,217 36.05 3,074 11.18 0.0017
2024-07-15 2024-06-30 13F MARATHON DIGITAL HOLDINGS IN COM 565788106 139,293 139,293 2,765 0.0017
2024-04-12 2024-03-31 13F MARATHON DIGITAL HOLDINGS IN COM 565788106 0 -301,411 -100.00 0 -100.00
2024-02-09 2023-12-31 13F MARATHON DIGITAL HOLDINGS IN COM 565788106 301,411 235,832 359.62 7,080 1,171.10 0.0048
2023-10-12 2023-09-30 13F MARATHON DIGITAL HOLDINGS IN COM 565788106 65,579 38,588 142.97 557 48.93 0.0005
2023-07-14 2023-06-30 13F MARATHON DIGITAL HOLDINGS IN COM 565788106 26,991 -158,355 -85.44 374 -76.86 0.0003
2023-04-24 2023-03-31 13F MARATHON DIGITAL HOLDINGS IN COM 565788106 185,346 185,346 1,616 0.0019
2022-08-05 2022-06-30 13F MARATHON DIGITAL HOLDINGS IN COM 565788106 0 -86,820 -100.00 0 -100.00
2022-04-19 2022-03-31 13F MARATHON DIGITAL HOLDINGS IN COM 565788106 86,820 86,820 2,427 0.0024
2021-05-14 2021-03-31 13F MARATHON PATENT GROUP COM 56585W401 0 -64,569 -100.00 0 -100.00
2021-02-17 2020-12-31 13F MARATHON PATENT GROUP COM 56585W401 64,569 64,569 674 0.0009
Disclosed Call Options
File
Date
Effective
Date
Form Security Class ID Opt Avg Share
Price
Shares ΔShares
(%)
Value
(x1000)
ΔValue
(%)
Prior Allocation
(%)
Allocation
(%)
ΔAllocation
(%)
Cost Basis
(x1000)
Profit
(x1000)
Return
(%)
2026-05-05 2026-03-31 13F MARA HOLDINGS COM Call 4,437,500 -16.77 36,210 -24.37 n/a n/a n/a
2026-01-29 2025-12-31 13F MARA HOLDINGS COM Call 5,331,400 -0.12 47,876 -50.88 n/a n/a n/a
2025-11-04 2025-09-30 13F MARA HOLDINGS COM Call 5,337,800 45.91 97,468 69.92 n/a n/a n/a
2025-07-22 2025-06-30 13F MARA HOLDINGS COM Call 3,658,300 -2.33 57,362 33.17 n/a n/a n/a
2025-04-14 2025-03-31 13F MARA HOLDINGS COM Call 3,745,500 -18.75 43,073 -44.28 n/a n/a n/a
2025-01-27 2024-12-31 13F MARA HOLDINGS COM Call 4,609,600 49.00 77,303 54.05 n/a n/a n/a
2024-10-25 2024-09-30 13F MARA HOLDINGS COM Call 3,093,700 -2.94 50,180 -20.69 n/a n/a n/a
2024-07-15 2024-06-30 13F MARATHON DIGITAL HOLDINGS IN COM Call 3,187,400 -11.76 63,270 -22.43 n/a n/a n/a
2024-04-12 2024-03-31 13F MARATHON DIGITAL HOLDINGS IN COM Call 3,612,100 -14.50 81,561 -17.81 n/a n/a n/a
2024-02-09 2023-12-31 13F MARATHON DIGITAL HOLDINGS IN COM Call 4,224,500 113.08 99,234 488.85 n/a n/a n/a
2023-10-12 2023-09-30 13F MARATHON DIGITAL HOLDINGS IN COM Call 1,982,600 4.01 16,852 -36.21 n/a n/a n/a
2023-07-14 2023-06-30 13F MARATHON DIGITAL HOLDINGS IN COM Call 1,906,200 28.38 26,420 104.05 n/a n/a n/a
2023-04-24 2023-03-31 13F MARATHON DIGITAL HOLDINGS IN COM Call 1,484,800 -32.38 12,947 72.42 n/a n/a n/a
2023-04-24 2022-12-31 13F/A MARATHON DIGITAL HOLDINGS IN COM Call 2,195,900 47.50 7,510 -52.90 n/a n/a n/a
2023-02-09 2022-12-31 13F MARATHON DIGITAL HOLDINGS IN COM Call 2,195,900 8 n/a n/a n/a
2022-11-08 2022-09-30 13F MARATHON DIGITAL HOLDINGS IN COM Call 1,488,700 -4.72 15,944 91.08 n/a n/a n/a
2022-08-05 2022-06-30 13F MARATHON DIGITAL HOLDINGS IN COM Call 1,562,500 32.88 8,344 -74.61 n/a n/a n/a
2022-04-19 2022-03-31 13F MARATHON DIGITAL HOLDINGS IN COM Call 1,175,900 32,866 n/a n/a n/a
2022-02-07 2021-12-31 13F MARATHON DIGITAL HOLDINGS IN COM Call 0 -100.00 0 -100.00 n/a n/a n/a
2021-11-05 2021-09-30 13F MARATHON DIGITAL HOLDINGS IN COM Call 928,600 15,461 n/a n/a n/a
2021-05-14 2021-03-31 13F MARATHON PATENT GROUP COM Call 0 -100.00 0 -100.00 n/a n/a n/a
2021-02-17 2020-12-31 13F MARATHON PATENT GROUP COM Call 276,200 2,884 n/a n/a n/a
Disclosed Put Options
File
Date
Effective
Date
Form Security Class ID Opt Avg Share Price Shares ΔShares
(%)
Value
(x1000)
ΔValue
(%)
Prior Allocation
(%)
Allocation
(%)
ΔAllocation
(%)
Cost Basis
(x1000)
Profit
(x1000)
Return
(%)
2026-05-05 2026-03-31 13F MARA HOLDINGS COM Put 5,105,000 17.01 41,657 6.32 n/a n/a n/a
2026-01-29 2025-12-31 13F MARA HOLDINGS COM Put 4,363,000 -7.32 39,180 -54.42 n/a n/a n/a
2025-11-04 2025-09-30 13F MARA HOLDINGS COM Put 4,707,400 35.50 85,957 57.79 n/a n/a n/a
2025-07-22 2025-06-30 13F MARA HOLDINGS COM Put 3,474,200 38.75 54,475 89.18 n/a n/a n/a
2025-04-14 2025-03-31 13F MARA HOLDINGS COM Put 2,504,000 -27.08 28,796 -49.99 n/a n/a n/a
2025-01-27 2024-12-31 13F MARA HOLDINGS COM Put 3,433,700 46.58 57,583 51.55 n/a n/a n/a
2024-10-25 2024-09-30 13F MARA HOLDINGS COM Put 2,342,500 7.10 37,995 -12.48 n/a n/a n/a
2024-07-15 2024-06-30 13F MARATHON DIGITAL HOLDINGS IN COM Put 2,187,200 -19.66 43,416 -29.38 n/a n/a n/a
2024-04-12 2024-03-31 13F MARATHON DIGITAL HOLDINGS IN COM Put 2,722,500 -24.79 61,474 -27.70 n/a n/a n/a
2024-02-09 2023-12-31 13F MARATHON DIGITAL HOLDINGS IN COM Put 3,619,800 241.88 85,029 844.87 n/a n/a n/a
2023-10-12 2023-09-30 13F MARATHON DIGITAL HOLDINGS IN COM Put 1,058,800 -41.71 9,000 -64.26 n/a n/a n/a
2023-07-14 2023-06-30 13F MARATHON DIGITAL HOLDINGS IN COM Put 1,816,500 40.37 25,177 123.11 n/a n/a n/a
2023-04-24 2023-03-31 13F MARATHON DIGITAL HOLDINGS IN COM Put 1,294,100 -5.95 11,285 139.83 n/a n/a n/a
2023-04-24 2022-12-31 13F/A MARATHON DIGITAL HOLDINGS IN COM Put 1,375,900 -7.61 4,706 -70.50 n/a n/a n/a
2023-02-09 2022-12-31 13F MARATHON DIGITAL HOLDINGS IN COM Put 1,375,900 5 n/a n/a n/a
2022-11-08 2022-09-30 13F MARATHON DIGITAL HOLDINGS IN COM Put 1,489,200 60.77 15,949 222.46 n/a n/a n/a
2022-08-05 2022-06-30 13F MARATHON DIGITAL HOLDINGS IN COM Put 926,300 -19.51 4,946 -84.62 n/a n/a n/a
2022-04-19 2022-03-31 13F MARATHON DIGITAL HOLDINGS IN COM Put 1,150,800 32,165 n/a n/a n/a
2022-02-07 2021-12-31 13F MARATHON DIGITAL HOLDINGS IN COM Put 0 -100.00 0 -100.00 n/a n/a n/a
2021-11-05 2021-09-30 13F MARATHON DIGITAL HOLDINGS IN COM Put 803,700 13,382 n/a n/a n/a
2021-05-14 2021-03-31 13F MARATHON PATENT GROUP COM Put 0 -100.00 0 -100.00 n/a n/a n/a
2021-02-17 2020-12-31 13F MARATHON PATENT GROUP COM Put 284,300 2,968 n/a n/a n/a
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.