CleanSpark, Inc.
GB ˙ BATS-CHIXE ˙ US18452B2097
SecurityGB:1CLSKM / CleanSpark, Inc.
InstitutionUBS Group AG
Latest Disclosed Ownership3,314,978 shares
Latest Disclosed Value $ 28,210,463
UBS Group AG ownership in 1CLSKM / CleanSpark, Inc.

On May 5, 2026 - UBS Group AG filed a 13F-HR form disclosing ownership of 3,314,978 shares of CleanSpark, Inc. (GB:1CLSKM) valued at $28,210,463 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 29, 2026 disclosing 3,579,166 shares of CleanSpark, Inc.. This represents a change in shares of -7.38% during the quarter.

UBS Group AG has a history of taking positions in derivatives of the underlying security (1CLSKM) in the form of stock options. The firm currently holds call options representing 41,400 of underlying shares valued at $352,314 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.

GB:1CLSKM / 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)
2026-05-05 2026-03-31 13F CLEANSPARK COM NEW 18452B209 3,314,978 -264,188 -7.38 28,210 -22.12 0.0008
2026-01-29 2025-12-31 13F CLEANSPARK COM NEW 18452B209 3,579,166 1,602,830 81.10 36,221 26.40 0.0059
2025-11-13 2025-09-30 13F CLEANSPARK COM NEW 18452B209 1,976,336 -1,401,409 -41.49 28,657 -23.08 0.0045
2025-08-14 2025-06-30 13F CLEANSPARK COM NEW 18452B209 3,377,745 499,974 17.37 37,257 92.66 0.0064
2025-05-13 2025-03-31 13F CLEANSPARK COM NEW 18452B209 2,877,771 520,314 22.07 19,339 -10.93 0.0036
2025-02-14 2024-12-31 13F CLEANSPARK COM NEW 18452B209 2,357,457 2,228,142 1,723.03 21,712 1,698.84 0.0040
2024-11-14 2024-09-30 13F CLEANSPARK COM NEW 18452B209 129,315 37,602 41.00 1,208 -17.44 0.0003
2024-08-14 2024-06-30 13F CLEANSPARK COM NEW 18452B209 91,713 -226,135 -71.15 1,463 -78.31 0.0004
2024-05-13 2024-03-31 13F CLEANSPARK COM NEW 18452B209 317,848 313,468 7,156.80 6,742 13,943.75 0.0017
2024-02-09 2023-12-31 13F CLEANSPARK COM NEW 18452B209 4,380 -80,750 -94.85 48 -85.19 0.0000
2023-11-09 2023-09-30 13F CLEANSPARK COM NEW 18452B209 85,130 14,435 20.42 324 6.93 0.0001
2023-08-11 2023-06-30 13F CLEANSPARK COM NEW 18452B209 70,695 7,503 11.87 303 73.14 0.0001
2023-05-12 2023-03-31 13F CLEANSPARK COM NEW 18452B209 63,192 15,587 32.74 176 80.41 0.0001
2023-02-08 2022-12-31 13F CLEANSPARK COM NEW 18452B209 47,605 25,265 113.09 97 36.62 0.0000
2022-11-10 2022-09-30 13F CLEANSPARK COM NEW 18452B209 22,340 1,623 7.83 71 -13.41 0.0000
2022-08-10 2022-06-30 13F CLEANSPARK COM NEW 18452B209 20,717 -10,509 -33.65 82 -78.76 0.0000
2022-05-16 2022-03-31 13F CLEANSPARK COM NEW 18452B209 31,226 -27,056 -46.42 386 -30.45 0.0001
2022-02-14 2021-12-31 13F CLEANSPARK COM NEW 18452B209 58,282 49,832 589.73 555 466.33 0.0002
2021-11-15 2021-09-30 13F CLEANSPARK COM NEW 18452B209 8,450 1,000 13.42 98 -20.97 0.0000
2021-08-13 2021-06-30 13F CLEANSPARK COM NEW 18452B209 7,450 -18,653 -71.46 124 -80.06 0.0000
2021-05-12 2021-03-31 13F CLEANSPARK COM NEW 18452B209 26,103 -6,657 -20.32 622 -34.66 0.0002
2021-02-11 2020-12-31 13F CLEANSPARK COM NEW 18452B209 32,760 32,752 409,400.00 952 53.05 0.0003
2020-11-12 2020-09-30 13F CLEANSPARK COM NEW 18452B209 8 8 0 0.0000
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 CLEANSPARK COM NEW Call 41,400 352 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.