As of November 6, 2026, one holder's latest Schedule 13D or 13G filing report owning 5% or more of BTC Digital Ltd. The largest reported stake is Ayrton Capital LLC's, at 9.99%. 5 filings are on record since July 22, 2025 (Schedule 13G, August 13, 2026).
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Key facts
- · Reporting person: Bigger Capital Fund L P · Sole voting: 0 · Shared voting: 0 · Sole dispositive: 0 · Shared dispositive: 0 · SCHEDULE 13G/A, 2026-10-29
- · Reporting person: Ayrton Capital LLC · Sole voting: 1,008,485 · Shared voting: 0 · Sole dispositive: 1,008,485 · Shared dispositive: 0 · SCHEDULE 13G, 2026-08-13
- · Holder: Bigger Michael · Percent: 5.6% · SCHEDULE 13G
- · Reporting person: CVI Investments, Inc. · Sole voting: 0 · Shared voting: 0 · Sole dispositive: 0 · Shared dispositive: 0 · SCHEDULE 13G/A, 2025-11-07
- · Holder: CVI Investments, Inc. · Percent: 5.3% · SCHEDULE 13G
BTC Digital Ltd. has 5 Schedule 13D or 13G filings on record since 2025-07-22. 1 holder's latest filing reports 5% or more of ordinary shares, $0.06 par value. Each figure below is the holder's own, as filed, with the filing linked.
Holders
| Holder | Percent | Shares | Latest | Event date |
|---|---|---|---|---|
| Ayrton Capital LLC | 9.99% | 1,008,485 | SCHEDULE 13G, 2026-08-13 | 2026-06-30 |
| CVI Investments, Inc. | 0% | 0 | SCHEDULE 13G/A, 2025-11-07 | 2025-09-30 |
| Bigger Capital Fund L P | 0% | 0 | SCHEDULE 13G/A, 2026-10-29 | 2026-09-30 |
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More on BTC Digital Ltd. and the records around it.
BTC Digital Ltd. elsewhere on the record
Companies that share a holder
- BIGGER CAPITAL FUND L P also filed stake reports on 13 other companies: ClearPoint Neuro, Inc. (Nov 2026), Dermata Therapeutics, Inc. (Nov 2026), Neuraxis, INC (Aug 2026)
- Ayrton Capital LLC also filed stake reports on 31 other companies: Bluejay Diagnostics, Inc. (Aug 2026), DEFSEC Technologies Inc. (Aug 2026), ENVERIC BIOSCIENCES, INC. (Aug 2026)
- CVI Investments, Inc. also filed stake reports on 48 other companies: Pine Tree Acquisition Corp. (Oct 2026), Sunshine Biopharma Inc. (Oct 2026), Outlook Therapeutics, Inc. (Aug 2026)
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What the Full Report on BTC Digital Ltd. covers
The Short Answer
Which Company This Is
What They Do, And How The Money Works
Who Runs It, And How To Reach Them
The Money: Funding, Valuation, Runway
Who Pays Them, And Who They Are Up Against
Warning Bells
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Voting and dispositive power, as filed
| Reporting person | Sole voting | Shared voting | Sole dispositive | Shared dispositive | Filing |
|---|---|---|---|---|---|
| Ayrton Capital LLC | 1,008,485 | 0 | 1,008,485 | 0 | SCHEDULE 13G, 2026-08-13 |
| Alto Opportunity Master Fund, SPC - Segregated Master Portfolio B | 1,008,485 | 0 | 1,008,485 | 0 | SCHEDULE 13G, 2026-08-13 |
| Waqas Khatri | 1,008,485 | 0 | 1,008,485 | 0 | SCHEDULE 13G, 2026-08-13 |
| CVI Investments, Inc. | 0 | 0 | 0 | 0 | SCHEDULE 13G/A, 2025-11-07 |
| Heights Capital Management, Inc. | 0 | 0 | 0 | 0 | SCHEDULE 13G/A, 2025-11-07 |
| Bigger Capital Fund L P | 0 | 0 | 0 | 0 | SCHEDULE 13G/A, 2026-10-29 |
| Bigger Capital Fund GP, LLC | 0 | 0 | 0 | 0 | SCHEDULE 13G/A, 2026-10-29 |
| District 2 Capital Fund LP | 0 | 0 | 0 | 0 | SCHEDULE 13G/A, 2026-10-29 |
| District 2 Capital LP | 0 | 0 | 0 | 0 | SCHEDULE 13G/A, 2026-10-29 |
| District 2 GP LLC | 0 | 0 | 0 | 0 | SCHEDULE 13G/A, 2026-10-29 |
| District 2 Holdings LLC | 0 | 0 | 0 | 0 | SCHEDULE 13G/A, 2026-10-29 |
| Bigger Michael | 0 | 0 | 0 | 0 | SCHEDULE 13G/A, 2026-10-29 |
The latest filing identifies BTC Digital Ltd. by CUSIP G6055H155 and gives its principal executive office as 61 Robinson Road Level 6 & 7, #738, Singapore (SCHEDULE 13G/A, 2026-10-29).
What the percentages are based on
The percentages below are based on (i) 9,516,975 shares of Common Stock of the Issuer that were outstanding as of December 31, 2025; and (ii) 569,889 shares of Common Stock issuable on the exercise of the Warrants held by the Reporting Persons. The amount of shares outstanding was based upon a statement in the Issuer's 20-F filed on May 11, 2026.Ayrton Capital LLC, SCHEDULE 13G, 2026-08-13
Timeline
| Filed | Holder | Percent | Filing |
|---|---|---|---|
| 2025-07-22 | CVI Investments, Inc. | 5.3% | SCHEDULE 13G |
| 2025-11-07 | CVI Investments, Inc. | 0% | SCHEDULE 13G/A |
| 2026-07-02 | Bigger Michael | 5.6% | SCHEDULE 13G |
| 2026-08-13 | Ayrton Capital LLC | 9.99% | SCHEDULE 13G |
| 2026-10-29 | Bigger Capital Fund L P | 0% | SCHEDULE 13G/A |
Questions about who owns BTC Digital Ltd.
Who owns BTC Digital Ltd.?
On this page, one holder's latest ownership filing reports 5% or more of BTC Digital Ltd.: Ayrton Capital LLC (9.99%, Schedule 13G, filed 2026-08-13).
When did Ayrton Capital LLC buy into BTC Digital Ltd.?
The filings give report dates, not purchase dates. The earliest filing from Ayrton Capital LLC on this page is the Schedule 13G, filed 2026-08-13, reporting 9.99%.
Is this an audit or a full list?
Neither. The ownership list on this page covers only Schedule 13D and 13G filings, which holders make once they own 5% or more of a class of shares (an amendment can report a stake that has since fallen below 5%); 5 such filings are shown here. It is not an audit and not a full cap table: holders who never reached 5% are not listed, and a stake can change after its latest filing.
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Where this comes from
Anyone who comes to own more than 5% of a class of a listed company's voting shares has to tell the SEC. A holder who may seek to change or influence the company files Schedule 13D, and has to say in Item 4, "Purpose of Transaction", what it intends to do. A holder with no such intent, such as many index and passive funds, may file the shorter Schedule 13G. Both are amended when the stake changes, including when it falls below 5%.
Every row here is one of those filings, linked to the filing itself. Percentages and share counts are exactly as the holder filed them, for the holder the filing names; an amendment showing a lower figure is shown as filed. Item 4 text is quoted word for word. Where a 13D's Item 4 contains a sentence stating a definite intent to influence the company, that sentence is marked and quoted; the page does not describe the holder or its motives beyond the words it filed. Nothing here is investment advice.