CLEANSPARK INC CLSK
COM NEW · Common Stock · CUSIP 18452B209 · ISIN US18452B2097
American Bitcoin mining company
- SectorFinancials
- IndustryFinance Services
- HeadquartersHenderson, NV
- Founded2014
- Websitecleanspark.com
- FilingsSEC EDGAR
* Summed across managers. Shares that two managers' reports both contain – a subsidiary's holdings that its parent's report includes too, or a sub-adviser's in its client's – are counted once ($462.5k this quarter). Holder counts are more reliable. Shares outstanding: 255.8m as of 2026-01-29, from the company's own SEC filing; the percentage can still exceed 100%: lent-out shares are counted by the lender and the buyer, and some reports overlap without saying so. Implied quarter-end price ≈ $10.15. Options: 36 managers hold calls ($470.6m notional), 30 hold puts ($261.7m).
Trends to Q4 2025
Institutional holders
Managers reporting a position, each quarter
Numbers
| Quarter | Holders |
|---|---|
| Q3 2022 | 100 |
| Q4 2022 | 104 |
| Q1 2023 | 98 |
| Q2 2023 | 121 |
| Q3 2023 | 145 |
| Q4 2023 | 162 |
| Q1 2024 | 214 |
| Q2 2024 | 244 |
| Q3 2024 | 248 |
| Q4 2024 | 276 |
| Q1 2025 | 308 |
| Q2 2025 | 308 |
| Q3 2025 | 334 |
| Q4 2025 | 381 |
Buyers vs sellers
Managers adding to or starting a position, vs cutting or selling out
Numbers
| Quarter | Bought or added | Cut or sold out |
|---|---|---|
| Q1 2024 | 149 | 70 |
| Q2 2024 | 156 | 90 |
| Q3 2024 | 143 | 100 |
| Q4 2024 | 165 | 92 |
| Q1 2025 | 190 | 109 |
| Q2 2025 | 160 | 140 |
| Q3 2025 | 186 | 134 |
| Q4 2025 | 209 | 156 |
Calls vs puts
Options held, notional value, last 4 quarters. P/C = puts ÷ calls
Numbers
| Quarter | Calls | Puts | P/C |
|---|---|---|---|
| Q1 2025 | $243.5m | $175.0m | 0.72 |
| Q2 2025 | $495.4m | $350.9m | 0.71 |
| Q3 2025 | $697.9m | $491.9m | 0.70 |
| Q4 2025 | $470.6m | $261.7m | 0.56 |
Biggest buyers
| Marex Group Ltd | Added | +5.4m |
| DIMENSIONAL FUND ADVISORS LP | Added | +3.5m |
| RENAISSANCE TECHNOLOGIES LLC | New | +2.6m |
| Situational Awareness LP | New | +1.6m |
| UBS Group AG | Added | +1.6m |
| CLEARFIELD CAPITAL MANAGEMENT LP | New | +1.3m |
| MIZUHO MARKETS AMERICAS LLC | Added | +1.0m |
| SG Americas Securities, LLC | Added | +993.9k |
| SONA ASSET MANAGEMENT (US) LLC | New | +919.5k |
| Trexquant Investment LP | New | +909.6k |
Biggest sellers
| CITADEL ADVISORS LLC | Sold out | -3.4m |
| Beryl Capital Management LLC | Sold out | -2.0m |
| Point72 Asset Management, L.P. | Sold out | -2.0m |
| Squarepoint Ops LLC | Sold out | -1.6m |
| TUDOR INVESTMENT CORP ET AL | Reduced | -1.6m |
| VOLORIDGE INVESTMENT MANAGEMENT, LLC | Reduced | -1.6m |
| Clear Street Group Inc. | Reduced | -1.3m |
| MILLENNIUM MANAGEMENT LLC | Reduced | -1.1m |
| Azora Capital LP | Sold out | -1.1m |
| ROYAL BANK OF CANADA | Reduced | -992.5k |
Biggest calls
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Reduced | $104.3m10.3m shares |
| CITADEL ADVISORS LLC | Reduced | $67.4m6.7m shares |
| JANE STREET GROUP, LLC | Added | $40.4m4.0m shares |
| OnyxPoint Global Management LP | New | $34.0m3.4m shares |
| GROUP ONE TRADING LLC | Reduced | $33.1m3.3m shares |
| SIMPLEX TRADING, LLC | Reduced | $30.4m3.0m shares |
| IMC-Chicago, LLC | Added | $28.1m2.8m shares |
| Parallax Volatility Advisers, L.P. | Added | $22.9m2.3m shares |
| Jefferies Financial Group Inc. | Reduced | $19.1m1.9m shares |
| PEAK6 LLC | Reduced | $18.7m1.8m shares |
Biggest puts
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Reduced | $64.6m6.4m shares |
| WOLVERINE ASSET MANAGEMENT LLC | Reduced | $42.4m4.2m shares |
| SIMPLEX TRADING, LLC | Reduced | $20.9m2.1m shares |
| Point72 Asset Management, L.P. | Added | $17.2m1.7m shares |
| JANE STREET GROUP, LLC | Reduced | $16.0m1.6m shares |
| CITADEL ADVISORS LLC | Reduced | $15.0m1.5m shares |
| GOLDMAN SACHS GROUP INC | Reduced | $12.4m1.2m shares |
| IMC-Chicago, LLC | Reduced | $10.8m1.1m shares |
| GROUP ONE TRADING LLC | Reduced | $8.3m815.8k shares |
| Walleye Trading LLC | Added | $7.6m747.4k shares |
Options at notional value: the value of the shares the contracts control, as filers report them, not what the options cost. Not included in the holders, shares or buying above.
Major shareholders (over 5%)
Anyone who owns more than 5% of a class of the company's shares has to say so: on Schedule 13D if they may try to influence or control the company, on 13G if they're a passive investor, and update it as the stake changes. Each holder's latest filing, from 19 Dec 2024 on; percentages are of the share class, as the holder worked them out.
| Holder | Stake |
|---|---|
| BlackRock, Inc. 13G · institution filed 2025-04-03 | 15.5% |
| VANGUARD CAPITAL MANAGEMENT LLC 13G · institution new · filed 2026-04-29 | 5.1% |
| D. E. SHAW & CO, L.P. 13G · passive investor new · filed 2026-07-17 | 5.0% |
Fell to 5% or below in the last year: BANK OF NOVA SCOTIA (3.9%, 2026-10-19), DIMENSIONAL FUND ADVISORS LP (3.8%, 2026-07-14), VANGUARD GROUP INC (0.0%, 2026-03-26; now reported by VANGUARD CAPITAL MANAGEMENT LLC), SUSQUEHANNA SECURITIES, LLC (4.8%, 2026-02-13)
Insider purchases and sales in Q4 2025
Shares bought or sold by the company's own officers, directors and 10% owners, in the open market or privately, as they reported to the SEC on Form 4 (due within two business days of the trade). Grants, option exercises, shares withheld for tax and gifts aren't included.
Officers and directors buying vs selling
Number of people, by quarter (10% owners not included)
Numbers
| Quarter | Buying | Bought | Selling | Sold | Sold under a plan |
|---|---|---|---|---|---|
| Q1 2024 | 0 | — | 4 | $32.6m | $17.5m |
| Q2 2024 | 0 | — | 1 | $44.1k | $44.1k |
| Q3 2024 | 0 | — | 2 | $256.9k | $51.5k |
| Q4 2024 | 0 | — | 2 | $49.5k | $49.5k |
| Q1 2025 | 0 | — | 7 | $693.3k | $2.5k |
| Q2 2025 | 0 | — | 1 | $525.5k | — |
| Q3 2025 | 0 | — | 1 | $581.1k | — |
| Q4 2025 | 0 | — | 2 | $1.5m | — |
| Date | Insider | Trade | Value |
|---|---|---|---|
| 2025-12-23 | Wood Thomas Leigh Director | Sold | $997.3k85.3k shares |
| 2025-12-04 | Cavaleri Amanda Director | Sold | $495.7k33.0k shares |
Their holding: how much the trade added to or took from the insider's holding (direct, or the trust or fund named). The same trade is sometimes reported by more than one insider, such as a fund and the director who represents it; totals count it once. A value is left blank where the reported price is far from the market price (usually a typo).
Holders, Q4 2025
| Manager | Shares | Change |
|---|---|---|
| BlackRock, Inc. 0.01% of their portfolio | 44.6m $451.5m | Added +177.3k |
| VANGUARD GROUP INC 0.00% of their portfolio | 25.1m $254.0m | Reduced -954.2k |
| STATE STREET CORP 0.00% of their portfolio | 11.5m $115.9m | Added +438.1k |
| DIMENSIONAL FUND ADVISORS LP 0.02% of their portfolio | 7.8m $78.7m | Added +3.5m |
| GEODE CAPITAL MANAGEMENT, LLC 0.00% of their portfolio | 7.4m $75.0m | Reduced -78.2k |
| MORGAN STANLEY 0.00% of their portfolio | 6.2m $62.6m | Reduced -141.9k |
| Marex Group Ltd 0.59% of their portfolio | 5.4m $54.7m | Added +5.4m |
| Invesco Ltd. 0.00% of their portfolio | 4.4m $44.6m | Reduced -74.7k |
| Tidal Investments LLC 0.16% of their portfolio | 3.8m $38.2m | Reduced -592.9k |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC 0.01% of their portfolio | 3.7m $37.0m | Added +198.4k |
| UBS Group AG 0.01% of their portfolio | 3.6m $36.2m | Added +1.6m |
| GOLDMAN SACHS GROUP INC 0.01% of their portfolio | 3.5m $35.9m | Added +252.3k |
| NORTHERN TRUST CORP 0.00% of their portfolio | 2.8m $28.4m | Reduced -186.4k |
| D. E. Shaw & Co., Inc. 0.02% of their portfolio | 2.8m $28.0m | Reduced -788.0k |
| RENAISSANCE TECHNOLOGIES LLC 0.04% of their portfolio | 2.6m $26.1m | New |
| VAN ECK ASSOCIATES CORP 0.02% of their portfolio | 2.6m $26.1m | Added +458.2k |
| BARCLAYS PLC 0.01% of their portfolio | 2.5m $25.6m | Added +496.4k |
| NOMURA HOLDINGS INC 0.07% of their portfolio | 2.3m $23.6m | Added +627.7k |
| VOLORIDGE INVESTMENT MANAGEMENT, LLC 0.08% of their portfolio | 2.3m $23.3m | Reduced -1.6m |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP 0.03% of their portfolio | 2.1m $21.0m | Added +565.3k |
| Bank of New York Mellon Corp 0.00% of their portfolio | 1.9m $19.6m | Added +254.4k |
| MIZUHO MARKETS AMERICAS LLC 0.38% of their portfolio | 1.7m $17.5m | Added +1.0m |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. 0.03% of their portfolio | 1.7m $17.2m | Reduced -473.6k |
| Nuveen, LLC 0.00% of their portfolio | 1.7m $16.7m | Added +805.9k |
| Situational Awareness LP 0.42% of their portfolio | 1.6m $16.6m | New |
| JPMORGAN CHASE & CO 0.00% of their portfolio | 1.5m $15.3m | Added +291.3k |
| Vident Advisory, LLC 0.13% of their portfolio | 1.4m $14.2m | Added +139.3k |
| PRINCIPAL FINANCIAL GROUP INC 0.01% of their portfolio | 1.3m $13.6m | Reduced -17.5k |
| CLEARFIELD CAPITAL MANAGEMENT LP 7.29% of their portfolio | 1.3m $13.5m | New |
| EXCHANGE TRADED CONCEPTS, LLC 0.10% of their portfolio | 1.2m $11.6m | Reduced -267.0k |
| SG Americas Securities, LLC 0.02% of their portfolio | 1.1m $11.4m | Added +993.9k |
| BANK OF AMERICA CORP /DE/ 0.00% of their portfolio | 1.1m $11.4m | Added +238.6k |
| Fort Point Capital Partners LLC 1.71% of their portfolio | 1.1m $14.1m | Unchanged |
| Public Sector Pension Investment Board 0.03% of their portfolio | 972.8k $9.8m | Reduced -123.6k |
| SONA ASSET MANAGEMENT (US) LLC 0.30% of their portfolio | 919.5k $9.3m | New |
| Trexquant Investment LP 0.08% of their portfolio | 909.6k $9.2m | New |
| BIT Capital GmbH 0.39% of their portfolio | 883.7k $8.9m | Added +194.4k |
| Jefferies Financial Group Inc. 0.07% of their portfolio | 879.9k $8.9m | Added +759.6k |
| STIFEL FINANCIAL CORP 0.01% of their portfolio | 866.1k $8.8m | Reduced -23.7k |
| SHARIAPORTFOLIO, INC. 3.34% of their portfolio | 784.8k $7.9m | Added +229.0k |
| Qube Research & Technologies Ltd 0.01% of their portfolio | 782.1k $7.9m | Added +152.8k |
| MARSHALL WACE, LLP 0.01% of their portfolio | 781.1k $7.9m | New |
| RHUMBLINE ADVISERS 0.01% of their portfolio | 760.0k $7.7m | Reduced -19.6k |
| Walleye Capital LLC 0.04% of their portfolio | 679.5k $6.9m | Added +521.9k |
| AMERIPRISE FINANCIAL INC 0.00% of their portfolio | 661.4k $6.7m | Reduced -46.5k |
| FIRST TRUST ADVISORS LP 0.00% of their portfolio | 649.7k $6.6m | Added +47.2k |
| Legal & General Group Plc 0.00% of their portfolio | 648.5k $6.6m | Reduced -33.6k |
| IMC-Chicago, LLC 0.11% of their portfolio | 614.2k $6.2m | Added +484.0k |
| Brevan Howard Capital Management LP 0.11% of their portfolio | 569.9k $5.9m | Added +318.8k |
| Swiss National Bank 0.00% of their portfolio | 554.2k $5.6m | Added +9.4k |
| VOYA INVESTMENT MANAGEMENT LLC 0.01% of their portfolio | 540.9k $5.5m | Added +209.7k |
| Quadrature Capital Ltd 0.05% of their portfolio | 512.0k $5.2m | New |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC 0.00% of their portfolio | 506.9k $5.1m | Added +23.3k |
| Galaxy Digital Capital Management GP LLC 6.45% of their portfolio | 506.7k $5.1m | Added +28.4k |
| DZ BANK AG Deutsche Zentral Genossenschafts Bank, Frankfurt am Main 0.00% of their portfolio | 492.5k $5.0m | Reduced -116.5k |
| MILLENNIUM MANAGEMENT LLC 0.00% of their portfolio | 489.7k $5.0m | Reduced -1.1m |
| CloudAlpha Capital Management Limited/Hong Kong 0.44% of their portfolio | 486.0k $4.9m | New |
| JANE STREET GROUP, LLC 0.01% of their portfolio | 474.6k $4.8m | Reduced -310.7k |
| WELLS FARGO & COMPANY/MN 0.00% of their portfolio | 463.3k $4.7m | Added +180.8k |
| GROUP ONE TRADING LLC 0.13% of their portfolio | 439.1k $4.4m | Added +101.1k |
| Bridgewater Associates, LP 0.02% of their portfolio | 410.1k $4.2m | Added +345.5k |
| CSM Advisors, LLC 0.11% of their portfolio | 391.8k $4.0m | Added +72.8k |
| NATIXIS 0.01% of their portfolio | 368.4k $3.7m | New |
| DEUTSCHE BANK AG\ 0.00% of their portfolio | 366.0k $3.7m | Added +13.1k |
| CONGRESS ASSET MANAGEMENT CO 0.03% of their portfolio | 359.3k $3.6m | Added +10.3k |
| Alight Capital Management LP 0.95% of their portfolio | 350.0k $3.5m | New |
| LANDSCAPE CAPITAL MANAGEMENT, L.L.C. 0.23% of their portfolio | 345.8k $3.5m | New |
| NEW YORK STATE TEACHERS RETIREMENT SYSTEM 0.01% of their portfolio | 341.7k $3.5m | Added +93.6k |
| ALLIANCEBERNSTEIN L.P. 0.00% of their portfolio | 326.1k $3.3m | Reduced -19.2k |
| Summit Financial, LLC 0.05% of their portfolio | 316.1k $3.2m | Added +38.9k |
| SEGALL BRYANT & HAMILL, LLC 0.04% of their portfolio | 310.1k $3.1m | Reduced -25.5k |
| PRUDENTIAL FINANCIAL INC 0.00% of their portfolio | 295.6k $3.0m | Added +2.7k |
| Gillson Capital LP 0.18% of their portfolio | 275.6k $2.8m | New |
| Cetera Investment Advisers 0.00% of their portfolio | 274.0k $2.8m | Added +34.2k |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM 0.00% of their portfolio | 270.0k $2.7m | Added +5.1k |
| PRICE T ROWE ASSOCIATES INC /MD/ 0.00% of their portfolio | 266.5k $2.7m | Added +15.1k |
| Maridea Wealth Management LLC 0.40% of their portfolio | 261.0k $2.6m | Added +137 |
| CAPITAL FUND MANAGEMENT S.A. 0.02% of their portfolio | 247.1k $2.5m | Reduced -465.2k |
| Universal- Beteiligungs- und Servicegesellschaft mbH 0.00% of their portfolio | 240.1k $2.5m | Reduced -79.5k |
| Magnetar Financial LLC 0.02% of their portfolio | 230.8k $2.3m | Reduced -194.0k |
| SIMPLEX TRADING, LLC 0.06% of their portfolio | 225.5k $2.3m | Reduced -25.7k |
| Fiduciary Alliance LLC 0.14% of their portfolio | 217.6k $2.2m | New |
| Walleye Trading LLC 0.03% of their portfolio | 214.4k $2.2m | Added +18.5k |
| ALGERT GLOBAL LLC 0.03% of their portfolio | 208.3k $2.1m | Reduced -69.1k |
| BANK OF MONTREAL /CAN/ 0.00% of their portfolio | 205.7k $2.1m | Added +144.0k |
| State of New Jersey Common Pension Fund D 0.01% of their portfolio | 199.5k $2.0m | New |
| Thrivent Financial for Lutherans 0.00% of their portfolio | 193.1k $2.0m | Reduced -9.6k |
| Feynman Point Asset Management LLC 3.57% of their portfolio | 176.8k $1.8m | First filing |
| Virtu Financial LLC 0.07% of their portfolio | 175.9k $1.8m | Added +65.9k |
| OXFORD ASSET MANAGEMENT LLP 0.59% of their portfolio | 165.0k $1.7m | Not comparable |
| Illinois Municipal Retirement Fund 0.02% of their portfolio | 158.4k $1.6m | New |
| MetLife Investment Management, LLC 0.01% of their portfolio | 158.3k $1.6m | Reduced -8.0k |
| Harvest Portfolios Group Inc. 0.03% of their portfolio | 156.4k $1.6m | Reduced -78.3k |
| Schonfeld Strategic Advisors LLC 0.01% of their portfolio | 150.0k $1.5m | Added +107.5k |
| State of Alaska, Department of Revenue 0.02% of their portfolio | 143.5k $1.5m | Added +2.1k |
| Creative Planning 0.00% of their portfolio | 143.4k $1.5m | Added +13.7k |
| TUDOR INVESTMENT CORP ET AL 0.01% of their portfolio | 135.9k $1.4m | Reduced -1.6m |
| Quantbot Technologies LP 0.04% of their portfolio | 131.9k $1.3m | Added +9.1k |
| MANUFACTURERS LIFE INSURANCE COMPANY, THE 0.00% of their portfolio | 130.5k $1.3m | Reduced -8.3k |
| JANUS HENDERSON GROUP PLC 0.00% of their portfolio | 129.7k $1.3m | Unchanged |