As of November 6, 2026, 5 holders' latest Schedule 13D or 13G filings report owning 5% or more of Kensington Capital Acquisition Corp. VI. The largest reported stake is Magnetar Financial LLC's, at 6.73%. 7 filings are on record since March 11, 2026 (Schedule 13G, May 13, 2026).
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Key facts
- · Reporting person: Millennium Management LLC · Sole voting: 0 · Shared voting: 200,000 · Sole dispositive: 0 · Shared dispositive: 200,000 · SCHEDULE 13G/A, 2026-07-06
- · Reporting person: LMR Partners LLP · Sole voting: 0 · Shared voting: 1,300,000 · Sole dispositive: 0 · Shared dispositive: 1,300,000 · SCHEDULE 13G, 2026-05-15
- · Reporting person: Polar Asset Management Partners Inc. · Sole voting: 1,300,000 · Shared voting: 0 · Sole dispositive: 1,300,000 · Shared dispositive: 0 · SCHEDULE 13G, 2026-05-15
- · Reporting person: Aristeia Capital, L.L.C. · Sole voting: 1,300,260 · Shared voting: 0 · Sole dispositive: 1,300,260 · Shared dispositive: 0 · SCHEDULE 13G, 2026-05-14
- · Holder: Magnetar Financial LLC · Percent: 6.73% · SCHEDULE 13G
Kensington Capital Acquisition Corp. VI has 7 Schedule 13D or 13G filings on record since 2026-03-11. 5 holders' latest filing reports 5% or more of class a ordinary shares, par value $0.0001 per share. Each figure below is the holder's own, as filed, with the filing linked.
Holders
| Holder | Percent | Shares | Latest | Event date |
|---|---|---|---|---|
| Magnetar Financial LLC | 6.73% | 1,549,399 | SCHEDULE 13G, 2026-05-13 | 2026-03-31 |
| Wealthspring Capital LLC | 6.63% | 1,524,270 | SCHEDULE 13G, 2026-04-09 | 2026-03-31 |
| LMR Partners LLP | 5.7% | 1,300,000 | SCHEDULE 13G, 2026-05-15 | 2026-03-31 |
| Polar Asset Management Partners Inc. | 5.7% | 1,300,000 | SCHEDULE 13G, 2026-05-15 | 2026-03-31 |
| Aristeia Capital, L.L.C. | 5.65% | 1,300,260 | SCHEDULE 13G, 2026-05-14 | 2026-03-31 |
| Millennium Management LLC | 0.9% | 200,000 | SCHEDULE 13G/A, 2026-07-06 | 2026-06-30 |
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More on Kensington Capital Acquisition Corp. VI and the records around it.
Kensington Capital Acquisition Corp. VI elsewhere on the record
Companies that share a holder
- Wealthspring Capital LLC also filed stake reports on 17 other companies: Lionheart Holdings (Oct 2026), AmperCap Acquisition Company (Jul 2026), CENTURION ACQUISITION CORP (Jul 2026)
- LMR Partners LLP also filed stake reports on 44 other companies: BuzzFeed Inc (Aug 2026), Cartesian Growth Corp IV (Aug 2026), Collective Acquisition Corp. II (Aug 2026)
- Aristeia Capital, L.L.C. also filed stake reports on 54 other companies: Apogee Acquisition Corp (Aug 2026), ARC Group Acquisition I Corp (Aug 2026), ClearThink 1 Acquisition Corp. (Aug 2026)
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Voting and dispositive power, as filed
| Reporting person | Sole voting | Shared voting | Sole dispositive | Shared dispositive | Filing |
|---|---|---|---|---|---|
| LMR Partners LLP | 0 | 1,300,000 | 0 | 1,300,000 | SCHEDULE 13G, 2026-05-15 |
| LMR PARTNERS Ltd | 0 | 1,300,000 | 0 | 1,300,000 | SCHEDULE 13G, 2026-05-15 |
| LMR Partners LLC | 0 | 1,300,000 | 0 | 1,300,000 | SCHEDULE 13G, 2026-05-15 |
| LMR Partners AG | 0 | 1,300,000 | 0 | 1,300,000 | SCHEDULE 13G, 2026-05-15 |
| LMR PARTNERS (DIFC) Ltd | 0 | 1,300,000 | 0 | 1,300,000 | SCHEDULE 13G, 2026-05-15 |
| LMR Partners (Ireland) Limited | 0 | 1,300,000 | 0 | 1,300,000 | SCHEDULE 13G, 2026-05-15 |
| Ben Levine | 0 | 1,300,000 | 0 | 1,300,000 | SCHEDULE 13G, 2026-05-15 |
| Stefan Renold | 0 | 1,300,000 | 0 | 1,300,000 | SCHEDULE 13G, 2026-05-15 |
| Polar Asset Management Partners Inc. | 1,300,000 | 0 | 1,300,000 | 0 | SCHEDULE 13G, 2026-05-15 |
| Aristeia Capital, L.L.C. | 1,300,260 | 0 | 1,300,260 | 0 | SCHEDULE 13G, 2026-05-14 |
| Millennium Management LLC | 0 | 200,000 | 0 | 200,000 | SCHEDULE 13G/A, 2026-07-06 |
| Millennium Group Management LLC | 0 | 200,000 | 0 | 200,000 | SCHEDULE 13G/A, 2026-07-06 |
| Israel A. Englander | 0 | 200,000 | 0 | 200,000 | SCHEDULE 13G/A, 2026-07-06 |
The latest filing identifies Kensington Capital Acquisition Corp. VI by CUSIP G5235S107 and gives its principal executive office as 1400 Old Country Road, Suite 301, Westbury, NY 11590 (SCHEDULE 13G/A, 2026-07-06).
Timeline
| Filed | Holder | Percent | Filing |
|---|---|---|---|
| 2026-03-11 | Millennium Management LLC | 5.7% | SCHEDULE 13G |
| 2026-04-09 | Wealthspring Capital LLC | 6.63% | SCHEDULE 13G |
| 2026-05-13 | Magnetar Financial LLC | 6.73% | SCHEDULE 13G |
| 2026-05-14 | Aristeia Capital, L.L.C. | 5.65% | SCHEDULE 13G |
| 2026-05-15 | LMR Partners LLP | 5.7% | SCHEDULE 13G |
| 2026-05-15 | Polar Asset Management Partners Inc. | 5.7% | SCHEDULE 13G |
| 2026-07-06 | Millennium Management LLC | 0.9% | SCHEDULE 13G/A |
Questions about who owns Kensington Capital Acquisition Corp. VI
Who owns Kensington Capital Acquisition Corp. VI?
On this page, 5 holders' latest ownership filings report 5% or more of Kensington Capital Acquisition Corp. VI: Magnetar Financial LLC (6.73%, Schedule 13G, filed 2026-05-13), Wealthspring Capital LLC (6.63%, Schedule 13G, filed 2026-04-09), LMR Partners LLP (5.7%, Schedule 13G, filed 2026-05-15), Polar Asset Management Partners Inc. (5.7%, Schedule 13G, filed 2026-05-15) and Aristeia Capital, L.L.C. (5.65%, Schedule 13G, filed 2026-05-14).
Who are the largest shareholders of Kensington Capital Acquisition Corp. VI?
By the share each holder's latest filing reports, the largest holders of Kensington Capital Acquisition Corp. VI on this page are Magnetar Financial LLC (6.73%), Wealthspring Capital LLC (6.63%) and LMR Partners LLP (5.7%).
When did Magnetar Financial LLC buy into Kensington Capital Acquisition Corp. VI?
The filings give report dates, not purchase dates. The earliest filing from Magnetar Financial LLC on this page is the Schedule 13G, filed 2026-05-13, reporting 6.73%.
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%); 7 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.
Also on the record for Kensington Capital Acquisition Corp. VI
| Date | Record | Figure | Our page | Source |
|---|---|---|---|---|
| March 5, 2026 | IPO filing, Form 424B4 | — | IPO filings | Source |
| February 5, 2026 | IPO filing, Form S-1 | — | IPO filings | Source |
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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.