CleanSpark, Inc.
US ˙ NasdaqCM ˙ US18452B2097

SecurityCLSK / CleanSpark, Inc.
InstitutionD. E. Shaw & Co., Inc.
ManagerDE Shaw
Latest Disclosed Ownership6,433,424 shares
Latest Disclosed Value $ 54,748,438
D. E. Shaw & Co., Inc. ownership in CLSK / CleanSpark, Inc.

On May 15, 2026 - D. E. Shaw & Co., Inc. filed a 13F-HR form disclosing ownership of 6,433,424 shares of CleanSpark, Inc. (US:CLSK) valued at $54,748,438 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 2,771,270 shares of CleanSpark, Inc.. This represents a change in shares of 132.15% during the quarter. The current value of the position is $113,292,597 USD.

D. E. Shaw & Co., Inc. 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 1,328,500 of underlying shares valued at $11,305,535 USD and put options representing 135,000 of underlying shares valued at $1,148,850 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 6,433,424 3,662,154 132.15 54,748 95.21 0.0242
2026-02-17 2025-12-31 13F CLEANSPARK COM NEW 18452B209 2,771,270 -787,958 -22.14 28,045 -45.66 0.0154
2025-11-14 2025-09-30 13F CLEANSPARK COM NEW 18452B209 3,559,228 3,559,228 51,609 0.0291
2025-08-14 2025-06-30 13F CLEANSPARK COM NEW 18452B209 0 -952,248 -100.00 0 -100.00
2025-05-15 2025-03-31 13F CLEANSPARK COM NEW 18452B209 952,248 859,225 923.67 6,399 647.55 0.0057
2025-02-14 2024-12-31 13F CLEANSPARK COM NEW 18452B209 93,023 55,424 147.41 857 143.87 0.0006
2024-11-14 2024-09-30 13F CLEANSPARK COM NEW 18452B209 37,599 -16,133 -30.02 351 -59.04 0.0003
2024-08-14 2024-06-30 13F CLEANSPARK COM NEW 18452B209 53,732 -1,187 -2.16 857 -26.37 0.0008
2024-05-15 2024-03-31 13F CLEANSPARK COM NEW 18452B209 54,919 -16,996 -23.63 1,165 46.78 0.0010
2024-02-14 2023-12-31 13F CLEANSPARK COM NEW 18452B209 71,915 28,383 65.20 793 380.61 0.0007
2023-11-14 2023-09-30 13F CLEANSPARK COM NEW 18452B209 43,532 -605,135 -93.29 166 -94.07 0.0002
2023-08-14 2023-06-30 13F CLEANSPARK COM NEW 18452B209 648,667 648,667 2,783 0.0028
2023-02-14 2022-12-31 13F CLEANSPARK COM NEW 18452B209 0 -22,595 -100.00 0 -100.00
2022-11-14 2022-09-30 13F CLEANSPARK COM NEW 18452B209 22,595 -3,805 -14.41 72 -30.10 0.0001
2022-08-15 2022-06-30 13F CLEANSPARK COM NEW 18452B209 26,400 -49,391 -65.17 103 -89.02 0.0001
2022-05-16 2022-03-31 13F CLEANSPARK COM NEW 18452B209 75,791 -227,610 -75.02 938 -67.52 0.0009
2022-02-14 2021-12-31 13F CLEANSPARK COM NEW 18452B209 303,401 210,592 226.91 2,888 168.40 0.0024
2021-11-15 2021-09-30 13F CLEANSPARK COM NEW 18452B209 92,809 -18,012 -16.25 1,076 -41.65 0.0010
2021-08-16 2021-06-30 13F CLEANSPARK COM NEW 18452B209 110,821 110,821 1,844 0.0016
2021-05-17 2021-03-31 13F CLEANSPARK COM NEW 18452B209 0 -145,119 -100.00 0 -100.00
2021-02-16 2020-12-31 13F CLEANSPARK COM NEW 18452B209 145,119 145,119 4,216 0.0038
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 1,328,500 1.50 11,306 -14.65 n/a n/a n/a
2026-02-17 2025-12-31 13F CLEANSPARK COM NEW Call 1,308,900 91.44 13,246 33.62 n/a n/a n/a
2025-11-14 2025-09-30 13F CLEANSPARK COM NEW Call 683,700 9,914 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 135,000 -49.06 1,149 -57.18 n/a n/a n/a
2026-02-17 2025-12-31 13F CLEANSPARK COM NEW Put 265,000 -75.48 2,682 -82.89 n/a n/a n/a
2025-11-14 2025-09-30 13F CLEANSPARK COM NEW Put 1,080,900 15,673 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.