As of November 6, 2026, 5 holders' latest Schedule 13D or 13G filings report owning 5% or more of Canadian Solar Inc. The largest reported stake is PAG Castle Holdings Pte. Ltd.'s, at 14.1%. 10 filings are on record since July 7, 2025 (Schedule 13G/A, July 7, 2025).
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Key facts
- · Reporting person: Mackenzie Financial Corp · Sole voting: 5,383,562 · Shared voting: 0 · Sole dispositive: 5,383,562 · Shared dispositive: 0 · SCHEDULE 13G/A, 2026-11-03
- · Reporting person: BlackRock, Inc. · Sole voting: 5,269,739 · Shared voting: 0 · Sole dispositive: 5,319,520 · Shared dispositive: 0 · SCHEDULE 13G, 2026-07-27
- · Reporting person: D. E. Shaw & Co., L.P. · Sole voting: 0 · Shared voting: 5,529,197 · Sole dispositive: 0 · Shared dispositive: 5,529,197 · SCHEDULE 13G/A, 2026-07-23
- · Holder: Mackenzie Financial Corp · Percent: 6.9% · SCHEDULE 13G
- · Holder: D. E. Shaw & Co., L.P. · Percent: 6.4% · SCHEDULE 13G
Canadian Solar Inc. has 10 Schedule 13D or 13G filings on record since 2025-07-07. 5 holders' latest filing reports 5% or more of common shares. Each figure below is the holder's own, as filed, with the filing linked.
Holders
| Holder | Percent | Shares | Latest | Event date |
|---|---|---|---|---|
| PAG Castle Holdings Pte. Ltd. | 14.1% | 10,989,020 | SCHEDULE 13G/A, 2025-07-07 | 2025-07-03 |
| Venture Holding S.a.r.l. SPF | 8.96% | 6,000,000 | SCHEDULE 13G/A, 2025-11-17 | 2025-11-06 |
| D. E. Shaw & Co., L.P. | 8% | 5,529,197 | SCHEDULE 13G/A, 2026-07-23 | 2026-07-16 |
| Mackenzie Financial Corp | 7.9% | 5,383,562 | SCHEDULE 13G/A, 2026-11-03 | 2026-09-30 |
| BlackRock, Inc. | 7.8% | 5,319,520 | SCHEDULE 13G, 2026-07-27 | 2026-06-30 |
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More on Canadian Solar Inc. and the records around it.
Canadian Solar Inc. elsewhere on the record
Companies that share a holder
- PAG Castle Holdings Pte. Ltd. also filed stake reports on 2 other companies: Aurora Mobile Limited (Feb 2026), SuperX AI Technology Limited (Nov 2025)
- MACKENZIE FINANCIAL CORP also filed stake reports on 8 other companies: BRP Inc. (Feb 2026), TELUS International (Cda) Inc. (Aug 2025)
- D. E. Shaw & Co., L.P. also filed stake reports on 28 other companies: Gossamer Bio, Inc. (Oct 2026), Sweetgreen, Inc. (Oct 2026), Venture Global, Inc. (Sep 2026)
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What the Full Report on Canadian Solar Inc. 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
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Voting and dispositive power, as filed
| Reporting person | Sole voting | Shared voting | Sole dispositive | Shared dispositive | Filing |
|---|---|---|---|---|---|
| D. E. Shaw & Co., L.P. | 0 | 5,529,197 | 0 | 5,529,197 | SCHEDULE 13G/A, 2026-07-23 |
| D. E. Shaw & Co., L.L.C. | 0 | 5,383,050 | 0 | 5,383,050 | SCHEDULE 13G/A, 2026-07-23 |
| D. E. Shaw Valence Portfolios, L.L.C. | 0 | 3,488,520 | 0 | 3,488,520 | SCHEDULE 13G/A, 2026-07-23 |
| David E. Shaw | 0 | 5,529,197 | 0 | 5,529,197 | SCHEDULE 13G/A, 2026-07-23 |
| Mackenzie Financial Corp | 5,383,562 | 0 | 5,383,562 | 0 | SCHEDULE 13G/A, 2026-11-03 |
| BlackRock, Inc. | 5,269,739 | 0 | 5,319,520 | 0 | SCHEDULE 13G, 2026-07-27 |
The latest filing identifies Canadian Solar Inc. by CUSIP 136635109 and gives its principal executive office as 4273 KING STREET EAST, SUITE 102, KITCHENER (SCHEDULE 13G/A, 2026-11-03).
Timeline
| Filed | Holder | Percent | Filing |
|---|---|---|---|
| 2025-07-07 | PAG Castle Holdings Pte. Ltd. | 14.1% | SCHEDULE 13G/A |
| 2025-07-14 | Venture Holding S.a.r.l. SPF | 10.73% | SCHEDULE 13G/A |
| 2025-08-14 | Mackenzie Financial Corp | 8.8% | SCHEDULE 13G/A |
| 2025-11-13 | Mackenzie Financial Corp | 6.7% | SCHEDULE 13G/A |
| 2025-11-17 | Venture Holding S.a.r.l. SPF | 8.96% | SCHEDULE 13G/A |
| 2026-03-20 | D. E. Shaw & Co., L.P. | 6.4% | SCHEDULE 13G |
| 2026-05-15 | Mackenzie Financial Corp | 6.9% | SCHEDULE 13G |
| 2026-07-23 | D. E. Shaw & Co., L.P. | 8% | SCHEDULE 13G/A |
| 2026-07-27 | BlackRock, Inc. | 7.8% | SCHEDULE 13G |
| 2026-11-03 | Mackenzie Financial Corp | 7.9% | SCHEDULE 13G/A |
Questions about who owns Canadian Solar Inc.
Who owns Canadian Solar Inc.?
On this page, 5 holders' latest ownership filings report 5% or more of Canadian Solar Inc.: PAG Castle Holdings Pte. Ltd. (14.1%, Schedule 13G/A, filed 2025-07-07), Venture Holding S.a.r.l. SPF (8.96%, Schedule 13G/A, filed 2025-11-17), D. E. Shaw & Co., L.P. (8%, Schedule 13G/A, filed 2026-07-23), Mackenzie Financial Corp (7.9%, Schedule 13G/A, filed 2026-11-03) and BlackRock, Inc. (7.8%, Schedule 13G, filed 2026-07-27).
Who are the largest shareholders of Canadian Solar Inc.?
By the share each holder's latest filing reports, the largest holders of Canadian Solar Inc. on this page are PAG Castle Holdings Pte. Ltd. (14.1%), Venture Holding S.a.r.l. SPF (8.96%) and D. E. Shaw & Co., L.P. (8%).
When did PAG Castle Holdings Pte. Ltd. buy into Canadian Solar Inc.?
The filings give report dates, not purchase dates. The earliest filing from PAG Castle Holdings Pte. Ltd. on this page is the Schedule 13G/A, filed 2025-07-07, reporting 14.1%. That earliest filing is itself an amendment, which updates an earlier report.
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%); 10 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.