As of November 9, 2026, 7 holders' latest Schedule 13D or 13G filings report owning 5% or more of Xanadu Quantum Technologies Limited. The largest reported stake is OMERS ADMINISTRATION Corp's, at 48.5%. 15 filings are on record since April 2, 2026 (Schedule 13G, April 8, 2026).
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Key facts
- · Reporting person: BDC Capital Inc. · Sole voting: 6,657,508 · Shared voting: 0 · Sole dispositive: 6,657,508 · Shared dispositive: 0 · SCHEDULE 13G, 2026-09-25
- · Reporting person: Christian Weedbrook · Sole voting: 41,869,890 · Shared voting: 0 · Sole dispositive: 41,869,890 · Shared dispositive: 0 · SCHEDULE 13D/A, 2026-09-24
- · Reporting person: Dipender Saluja · Sole voting: 57,469 · Shared voting: 0 · Sole dispositive: 57,469 · Shared dispositive: 0 · SCHEDULE 13G/A, 2026-09-24
- · Reporting person: Millennium Management LLC · Sole voting: 0 · Shared voting: 82,694 · Sole dispositive: 0 · Shared dispositive: 82,694 · SCHEDULE 13G, 2026-06-25
- · Holder: Polar Asset Management Partners Inc. · Percent: 4.6% · SCHEDULE 13G/A
Xanadu Quantum Technologies Limited has 15 Schedule 13D or 13G filings on record since 2026-04-02. 7 holders' latest filing reports 5% or more of class b subordinate voting shares, without par value. Each figure below is the holder's own, as filed, with the filing linked.
Holders
| Holder | Percent | Shares | Latest | Event date |
|---|---|---|---|---|
| OMERS ADMINISTRATION Corp | 48.5% | 40,246,515 | SCHEDULE 13G, 2026-04-08 | 2026-03-26 |
| Georgian Partners Growth Fund (International) IV, LP | 40.8% | 18,232,117 | SCHEDULE 13D, 2026-04-08 | 2026-03-26 |
| Radical Ventures II GP Inc. | 21.56% | 11,898,488 | SCHEDULE 13G, 2026-05-06 | 2026-03-26 |
| 20.2% | 41,869,890 | SCHEDULE 13D/A, 2026-09-24 | 2026-09-22 | |
| Bessemer Venture Partners XI Institutional L.P. | 9.99% | 13,772,572 | SCHEDULE 13G, 2026-04-02 | 2026-03-26 |
| GIC Private Ltd | 6.68% | 3,099,620 | SCHEDULE 13G, 2026-04-07 | 2026-03-26 |
| Lockheed Martin Investment Management Co | 5.1% | 2,308,892 | SCHEDULE 13G, 2026-05-04 | 2026-03-26 |
| Polar Asset Management Partners Inc. | 4.6% | 2,000,000 | SCHEDULE 13G/A, 2026-05-15 | 2026-03-31 |
| BDC Capital Inc. | 4% | 6,657,508 | SCHEDULE 13G, 2026-09-25 | 2026-09-20 |
| Millennium Management LLC | 0.2% | 82,694 | SCHEDULE 13G, 2026-06-25 | 2026-06-17 |
| 0% | 57,469 | SCHEDULE 13G/A, 2026-09-24 | 2026-09-22 | |
| MMCAP International Inc. SPC | 0% | 0 | SCHEDULE 13G/A, 2026-05-05 | 2026-05-04 |
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More on Xanadu Quantum Technologies Limited and the records around it.
Xanadu Quantum Technologies Limited elsewhere on the record
Companies that share a holder
- BDC Capital Inc. also filed stake reports on 1 other company: General Fusion Group Ltd. (Jul 2026)
- LOCKHEED MARTIN INVESTMENT MANAGEMENT CO also filed stake reports on 1 other company: TCW Direct Lending VIII LLC (Jul 2026)
- OMERS ADMINISTRATION Corp also filed stake reports on 1 other company: Brookfield Business Corporation (Apr 2026)
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Voting and dispositive power, as filed
| Reporting person | Sole voting | Shared voting | Sole dispositive | Shared dispositive | Filing |
|---|---|---|---|---|---|
| Christian Weedbrook | 41,869,890 | 0 | 41,869,890 | 0 | SCHEDULE 13D/A, 2026-09-24 |
| BDC Capital Inc. | 6,657,508 | 0 | 6,657,508 | 0 | SCHEDULE 13G, 2026-09-25 |
| Millennium Management LLC | 0 | 82,694 | 0 | 82,694 | SCHEDULE 13G, 2026-06-25 |
| Millennium Group Management LLC | 0 | 82,694 | 0 | 82,694 | SCHEDULE 13G, 2026-06-25 |
| Israel A. Englander | 0 | 82,694 | 0 | 82,694 | SCHEDULE 13G, 2026-06-25 |
| Dipender Saluja | 57,469 | 0 | 57,469 | 0 | SCHEDULE 13G/A, 2026-09-24 |
| Ion Yadigaroglu | 0 | 57,469 | 0 | 57,469 | SCHEDULE 13G/A, 2026-09-24 |
| Technology Impact Fund II, LP | 0 | 0 | 0 | 0 | SCHEDULE 13G/A, 2026-09-24 |
| TIF Partners II, LLC | 0 | 0 | 0 | 0 | SCHEDULE 13G/A, 2026-09-24 |
The latest filing identifies Xanadu Quantum Technologies Limited by CUSIP 98390R102 and gives its principal executive office as 777 Bay Street, Suite 2400, Toronto (SCHEDULE 13G, 2026-09-25).
Purpose of Transaction (Item 4)
Georgian Partners Growth Fund (International) IV, LP
The information set forth in Item 3 of this Statement is incorporated herein by reference. The Reporting Persons hold the securities of the Issuer for general investment purposes. The Reporting Persons may, from time to time, depending on prevailing market, economic and other conditions, acquire additional shares of Class B Subordinate Voting Shares or other securities of the Issuer, dispose of any such securities, or engage in discussions with the Issuer concerning such acquisitions or dispositions or further investments in the Issuer. The Reporting Persons intend to review their investment in the Issuer on a continuing basis and, depending upon the price and availability of shares of Class B Subordinate Voting Shares or other securities of the Issuer, subsequent developments affecting the Issuer, the Issuer's business and prospects, other investment and business opportunities available to the Reporting Persons, general stock market and economic conditions, tax considerations and other factors considered relevant, may decide at any time to increase or to decrease the size of their investment in the Issuer in the open market, in privately negotiated transactions, pursuant to 10b5-1 trading plans or otherwise. Except as set forth above, the Reporting Persons have no present plans or intentions which would result in or relate to any of the transactions described in subparagraphs (a) through (j) of Item 4 of Schedule 13D.Item 4 of the SCHEDULE 13D filed 2026-04-08
Timeline
| Filed | Holder | Percent | Filing |
|---|---|---|---|
| 2026-04-02 | Bessemer Venture Partners XI Institutional L.P. | 9.99% | SCHEDULE 13G |
| 2026-04-02 | Dipender Saluja | 19.9% | SCHEDULE 13G |
| 2026-04-02 | Christian Weedbrook | 51.8% | SCHEDULE 13D |
| 2026-04-07 | GIC Private Ltd | 6.68% | SCHEDULE 13G |
| 2026-04-08 | OMERS ADMINISTRATION Corp | 48.5% | SCHEDULE 13G |
| 2026-04-08 | Georgian Partners Growth Fund (International) IV, LP | 40.8% | SCHEDULE 13D |
| 2026-04-09 | MMCAP International Inc. SPC | 15.9% | SCHEDULE 13G |
| 2026-05-04 | Lockheed Martin Investment Management Co | 5.1% | SCHEDULE 13G |
| 2026-05-05 | MMCAP International Inc. SPC | 0% | SCHEDULE 13G/A |
| 2026-05-06 | Radical Ventures II GP Inc. | 21.56% | SCHEDULE 13G |
| 2026-05-15 | Polar Asset Management Partners Inc. | 4.6% | SCHEDULE 13G/A |
| 2026-06-25 | Millennium Management LLC | 0.2% | SCHEDULE 13G |
| 2026-09-24 | Dipender Saluja | 0% | SCHEDULE 13G/A |
| 2026-09-24 | Christian Weedbrook | 20.2% | SCHEDULE 13D/A |
| 2026-09-25 | BDC Capital Inc. | 4% | SCHEDULE 13G |
Questions about who owns Xanadu Quantum Technologies Limited
Who owns Xanadu Quantum Technologies Limited?
On this page, 7 holders' latest ownership filings report 5% or more of Xanadu Quantum Technologies Limited: OMERS ADMINISTRATION Corp (48.5%, Schedule 13G, filed 2026-04-08), Georgian Partners Growth Fund (International) IV, LP (40.8%, Schedule 13D, filed 2026-04-08), Radical Ventures II GP Inc. (21.56%, Schedule 13G, filed 2026-05-06), Christian Weedbrook (20.2%, Schedule 13D/A, filed 2026-09-24) and Bessemer Venture Partners XI Institutional L.P. (9.99%, Schedule 13G, filed 2026-04-02); 2 more are listed above.
Who are the largest shareholders of Xanadu Quantum Technologies Limited?
By the share each holder's latest filing reports, the largest holders of Xanadu Quantum Technologies Limited on this page are OMERS ADMINISTRATION Corp (48.5%), Georgian Partners Growth Fund (International) IV, LP (40.8%) and Radical Ventures II GP Inc. (21.56%).
When did OMERS ADMINISTRATION Corp buy into Xanadu Quantum Technologies Limited?
The filings give report dates, not purchase dates. The earliest filing from OMERS ADMINISTRATION Corp on this page is the Schedule 13G, filed 2026-04-08, reporting 48.5%.
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%); 15 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.