CleanSpark, Inc.
US ˙ NasdaqCM ˙ US18452B2097

SecurityCLSK / CleanSpark, Inc.
InstitutionCitadel Advisors Llc
ManagerKen Griffin
Latest Disclosed Ownership2,104,687 shares
Latest Disclosed Value $ 17,910,886
Citadel Advisors Llc ownership in CLSK / CleanSpark, Inc.

On May 15, 2026 - Citadel Advisors Llc filed a 13F-HR form disclosing ownership of 2,104,687 shares of CleanSpark, Inc. (US:CLSK) valued at $17,910,886 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 0 shares of CleanSpark, Inc.. The current value of the position is $32,812,070 USD.

Citadel Advisors Llc has a history of taking positions in derivatives of the underlying security (CLSK) in the form of stock options. The firm currently holds call options representing 4,046,800 of underlying shares valued at $34,438,268 USD and put options representing 1,666,400 of underlying shares valued at $14,181,064 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.

CLSK / CleanSpark, 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)
2026-05-15 2026-03-31 13F CLEANSPARK COM NEW 18452B209 2,104,687 2,104,687 17,911 0.0025
2026-02-17 2025-12-31 13F CLEANSPARK COM NEW 18452B209 0 -3,380,329 -100.00 0 -100.00
2025-11-14 2025-09-30 13F CLEANSPARK COM NEW 18452B209 3,380,329 790,678 30.53 49,015 71.60 0.0075
2025-08-14 2025-06-30 13F CLEANSPARK COM NEW 18452B209 2,589,651 214,264 9.02 28,564 78.94 0.0050
2025-05-15 2025-03-31 13F CLEANSPARK COM NEW 18452B209 2,375,387 654,832 38.06 15,963 0.73 0.0030
2025-02-14 2024-12-31 13F CLEANSPARK COM NEW 18452B209 1,720,555 93,172 5.73 15,846 4.26 0.0027
2024-11-14 2024-09-30 13F CLEANSPARK COM NEW 18452B209 1,627,383 1,596,672 5,199.02 15,200 3,008.18 0.0029
2024-08-14 2024-06-30 13F CLEANSPARK COM NEW 18452B209 30,711 -455,419 -93.68 490 -95.26 0.0001
2024-05-15 2024-03-31 13F CLEANSPARK COM NEW 18452B209 486,130 218,466 81.62 10,311 249.25 0.0020
2024-02-14 2023-12-31 13F CLEANSPARK COM NEW 18452B209 267,664 -611,396 -69.55 2,952 -11.85 0.0006
2023-11-14 2023-09-30 13F CLEANSPARK COM NEW 18452B209 879,060 -595,695 -40.39 3,349 -47.06 0.0007
2023-08-14 2023-06-30 13F CLEANSPARK COM NEW 18452B209 1,474,755 1,076,818 270.60 6,327 471.97 0.0013
2023-05-15 2023-03-31 13F CLEANSPARK COM NEW 18452B209 397,937 397,937 1,106 0.0002
2023-02-14 2022-12-31 13F CLEANSPARK COM NEW 18452B209 0 -255,186 -100.00 0 -100.00
2022-11-14 2022-09-30 13F CLEANSPARK COM NEW 18452B209 255,186 230,899 950.71 812 754.74 0.0002
2022-08-15 2022-06-30 13F CLEANSPARK COM NEW 18452B209 24,287 13,282 120.69 95 -30.15 0.0000
2022-05-16 2022-03-31 13F CLEANSPARK COM NEW 18452B209 11,005 -773,798 -98.60 136 -98.18 0.0000
2022-02-14 2021-12-31 13F CLEANSPARK COM NEW 18452B209 784,803 733,057 1,416.64 7,471 1,145.17 0.0015
2021-11-15 2021-09-30 13F CLEANSPARK Cmn 18452B209 51,746 4,747 10.10 600 -23.27 0.0001
2021-08-16 2021-06-30 13F CLEANSPARK COM NEW 18452B209 46,999 -87,615 -65.09 782 -75.62 0.0002
2021-05-21 2021-03-31 13F/A-1 CLEANSPARK COM NEW 18452B209 134,614 134,614 3,207 0.0008
2021-05-17 2021-03-31 13F CLEANSPARK COM NEW 18452B209 134,614 134,614 3,207 0.0008
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
(%)
2026-05-15 2026-03-31 13F CLEANSPARK COM NEW Call 4,046,800 -39.22 34,438 -48.89 n/a n/a n/a
2026-02-17 2025-12-31 13F CLEANSPARK COM NEW Call 6,657,900 -9.98 67,378 -37.18 n/a n/a n/a
2025-11-14 2025-09-30 13F CLEANSPARK COM NEW Call 7,396,300 40.14 107,246 84.23 n/a n/a n/a
2025-08-14 2025-06-30 13F CLEANSPARK COM NEW Call 5,277,800 13.90 58,214 86.95 n/a n/a n/a
2025-05-15 2025-03-31 13F CLEANSPARK COM NEW Call 4,633,800 -48.23 31,139 -62.23 n/a n/a n/a
2025-02-14 2024-12-31 13F CLEANSPARK COM NEW Call 8,951,000 77.88 82,439 75.41 n/a n/a n/a
2024-11-14 2024-09-30 13F CLEANSPARK COM NEW Call 5,032,000 69.26 46,999 -0.89 n/a n/a n/a
2024-08-14 2024-06-30 13F CLEANSPARK COM NEW Call 2,973,000 -14.95 47,419 -36.04 n/a n/a n/a
2024-05-15 2024-03-31 13F CLEANSPARK COM NEW Call 3,495,500 188.12 74,140 454.06 n/a n/a n/a
2024-02-14 2023-12-31 13F CLEANSPARK COM NEW Call 1,213,200 720.84 13,382 2,276.73 n/a n/a n/a
2023-11-14 2023-09-30 13F CLEANSPARK COM NEW Call 147,800 60.65 563 42.89 n/a n/a n/a
2023-08-14 2023-06-30 13F CLEANSPARK COM NEW Call 92,000 41.54 395 118.89 n/a n/a n/a
2023-05-15 2023-03-31 13F CLEANSPARK COM NEW Call 65,000 -77.38 181 -69.28 n/a n/a n/a
2023-02-14 2022-12-31 13F CLEANSPARK COM NEW Call 287,400 4.21 586 -33.18 n/a n/a n/a
2022-11-14 2022-09-30 13F CLEANSPARK COM NEW Call 275,800 -10.69 877 -27.58 n/a n/a n/a
2022-08-15 2022-06-30 13F CLEANSPARK COM NEW Call 308,800 -37.53 1,211 -80.19 n/a n/a n/a
2022-05-16 2022-03-31 13F CLEANSPARK COM NEW Call 494,300 9.48 6,114 42.25 n/a n/a n/a
2022-02-14 2021-12-31 13F CLEANSPARK COM NEW Call 451,500 117.38 4,298 78.56 n/a n/a n/a
2021-11-15 2021-09-30 13F CLEANSPARK Cmn Call 207,700 23.19 2,407 -14.22 n/a n/a n/a
2021-08-16 2021-06-30 13F CLEANSPARK COM NEW Call 168,600 -18.98 2,806 -43.39 n/a n/a n/a
2021-05-21 2021-03-31 13F/A CLEANSPARK COM NEW Call 208,100 -39.66 4,957 -50.52 n/a n/a n/a
2021-05-17 2021-03-31 13F CLEANSPARK COM NEW Call 208,100 4,957 n/a n/a n/a
2021-02-16 2020-12-31 13F CLEANSPARK COM NEW Call 344,900 147.95 10,019 476.80 n/a n/a n/a
2020-11-16 2020-09-30 13F CLEANSPARK COM NEW Call 139,100 1,737 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
(%)
2026-05-15 2026-03-31 13F CLEANSPARK COM NEW Put 1,666,400 12.51 14,181 -5.38 n/a n/a n/a
2026-02-17 2025-12-31 13F CLEANSPARK COM NEW Put 1,481,100 -61.57 14,989 -73.18 n/a n/a n/a
2025-11-14 2025-09-30 13F CLEANSPARK COM NEW Put 3,853,600 0.61 55,877 32.27 n/a n/a n/a
2025-08-14 2025-06-30 13F CLEANSPARK COM NEW Put 3,830,100 11.10 42,246 82.36 n/a n/a n/a
2025-05-15 2025-03-31 13F CLEANSPARK COM NEW Put 3,447,400 -38.45 23,167 -55.09 n/a n/a n/a
2025-02-14 2024-12-31 13F CLEANSPARK COM NEW Put 5,600,800 15.61 51,583 14.00 n/a n/a n/a
2024-11-14 2024-09-30 13F CLEANSPARK COM NEW Put 4,844,600 26.26 45,249 -26.07 n/a n/a n/a
2024-08-14 2024-06-30 13F CLEANSPARK COM NEW Put 3,837,100 -3.13 61,202 -27.15 n/a n/a n/a
2024-05-15 2024-03-31 13F CLEANSPARK COM NEW Put 3,961,000 316.86 84,013 701.64 n/a n/a n/a
2024-02-14 2023-12-31 13F CLEANSPARK COM NEW Put 950,200 50.21 10,481 334.85 n/a n/a n/a
2023-11-14 2023-09-30 13F CLEANSPARK COM NEW Put 632,600 515.97 2,410 447.73 n/a n/a n/a
2023-08-14 2023-06-30 13F CLEANSPARK COM NEW Put 102,700 5.55 441 62.96 n/a n/a n/a
2023-05-15 2023-03-31 13F CLEANSPARK COM NEW Put 97,300 84.28 270 152.34 n/a n/a n/a
2023-02-14 2022-12-31 13F CLEANSPARK COM NEW Put 52,800 -17.11 108 -47.29 n/a n/a n/a
2022-11-14 2022-09-30 13F CLEANSPARK COM NEW Put 63,700 -22.69 203 -37.15 n/a n/a n/a
2022-08-15 2022-06-30 13F CLEANSPARK COM NEW Put 82,400 -50.21 323 -84.22 n/a n/a n/a
2022-05-16 2022-03-31 13F CLEANSPARK COM NEW Put 165,500 -10.69 2,047 16.04 n/a n/a n/a
2022-02-14 2021-12-31 13F CLEANSPARK COM NEW Put 185,300 39.22 1,764 14.32 n/a n/a n/a
2021-11-15 2021-09-30 13F CLEANSPARK Cmn Put 133,100 38.94 1,543 -3.20 n/a n/a n/a
2021-08-16 2021-06-30 13F CLEANSPARK COM NEW Put 95,800 -59.75 1,594 -71.88 n/a n/a n/a
2021-05-21 2021-03-31 13F/A CLEANSPARK COM NEW Put 238,000 -9.47 5,669 -25.77 n/a n/a n/a
2021-05-17 2021-03-31 13F CLEANSPARK COM NEW Put 238,000 5,669 n/a n/a n/a
2021-02-16 2020-12-31 13F CLEANSPARK COM NEW Put 262,900 188.27 7,637 570.50 n/a n/a n/a
2020-11-16 2020-09-30 13F CLEANSPARK COM NEW Put 91,200 1,139 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.