As of November 6, 2026, 5 holders' latest Schedule 13D or 13G filings report owning 5% or more of Quantum Leap Acquisition Corp. The largest reported stake is Paddington Partners 88 LLC's, at 25.7%. 7 filings are on record since May 1, 2026 (Schedule 13D, May 8, 2026).
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Key facts
- · Reporting person: Glazer Capital, LLC · Sole voting: 0 · Shared voting: 1,502,368 · Sole dispositive: 0 · Shared dispositive: 1,502,368 · SCHEDULE 13G, 2026-08-13
- · Reporting person: Magnetar Financial LLC · Sole voting: 0 · Shared voting: 1,500,000 · Sole dispositive: 0 · Shared dispositive: 1,500,000 · SCHEDULE 13G, 2026-08-13
- · Reporting person: Decagon Asset Management LLP · Sole voting: 1,204,380 · Shared voting: 0 · Sole dispositive: 1,204,380 · Shared dispositive: 0 · SCHEDULE 13G, 2026-08-13
- · Reporting person: Millennium Management LLC · Sole voting: 0 · Shared voting: 950,000 · Sole dispositive: 0 · Shared dispositive: 950,000 · SCHEDULE 13G/A, 2026-08-11
- · Holder: Paddington Partners 88 LLC · Percent: 25.7% · SCHEDULE 13D
Quantum Leap Acquisition Corp has 7 Schedule 13D or 13G filings on record since 2026-05-01. 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 |
|---|---|---|---|---|
| Paddington Partners 88 LLC | 25.7% | 6,919,500 | SCHEDULE 13D, 2026-05-08 | 2026-04-30 |
| Glazer Capital, LLC | 6.98% | 1,502,368 | SCHEDULE 13G, 2026-08-13 | 2026-06-30 |
| Magnetar Financial LLC | 6.97% | 1,500,000 | SCHEDULE 13G, 2026-08-13 | 2026-06-30 |
| Decagon Asset Management LLP | 5.24% | 1,204,380 | SCHEDULE 13G, 2026-08-13 | 2026-06-30 |
| The K2 Principal Fund, L.P. | 5% | 1,000,000 | SCHEDULE 13G, 2026-05-01 | 2026-05-01 |
| Millennium Management LLC | 4% | 950,000 | SCHEDULE 13G/A, 2026-08-11 | 2026-06-30 |
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More on Quantum Leap Acquisition Corp and the records around it.
Companies that share a holder
- The K2 Principal Fund, L.P. also filed stake reports on 6 other companies: Newbury Street II Acquisition Corp (Nov 2026), Apogee Acquisition Corp (Apr 2026), Hennessy Capital Investment Corp. VII (Feb 2026)
- Decagon Asset Management LLP also filed stake reports on 14 other companies: Oaktree Acquisition Corp. III Life Sciences (Aug 2026), Alpex Acquisition Corp (Aug 2026), APEX Tech Acquisition Inc. (Aug 2026)
- MAGNETAR FINANCIAL LLC also filed stake reports on 97 other companies: Blue Acquisition Corp. (Sep 2026), CENTURION ACQUISITION CORP. (Sep 2026), Churchill Capital Corp IX (Sep 2026)
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Voting and dispositive power, as filed
| Reporting person | Sole voting | Shared voting | Sole dispositive | Shared dispositive | Filing |
|---|---|---|---|---|---|
| Glazer Capital, LLC | 0 | 1,502,368 | 0 | 1,502,368 | SCHEDULE 13G, 2026-08-13 |
| Paul J. Glazer | 0 | 1,502,368 | 0 | 1,502,368 | SCHEDULE 13G, 2026-08-13 |
| Magnetar Financial LLC | 0 | 1,500,000 | 0 | 1,500,000 | SCHEDULE 13G, 2026-08-13 |
| Magnetar Capital Partners LP | 0 | 1,500,000 | 0 | 1,500,000 | SCHEDULE 13G, 2026-08-13 |
| Supernova Management LLC | 0 | 1,500,000 | 0 | 1,500,000 | SCHEDULE 13G, 2026-08-13 |
| David J. Snyderman | 0 | 1,500,000 | 0 | 1,500,000 | SCHEDULE 13G, 2026-08-13 |
| Decagon Asset Management LLP | 1,204,380 | 0 | 1,204,380 | 0 | SCHEDULE 13G, 2026-08-13 |
| Benjamin John Durham | 1,204,380 | 0 | 1,204,380 | 0 | SCHEDULE 13G, 2026-08-13 |
| Millennium Management LLC | 0 | 950,000 | 0 | 950,000 | SCHEDULE 13G/A, 2026-08-11 |
| Millennium Group Management LLC | 0 | 950,000 | 0 | 950,000 | SCHEDULE 13G/A, 2026-08-11 |
| Israel A. Englander | 0 | 950,000 | 0 | 950,000 | SCHEDULE 13G/A, 2026-08-11 |
The latest filing identifies Quantum Leap Acquisition Corp by CUSIP G73167101 and gives its principal executive office as Willow Workplace Menlo Park, 80 Willow Road, Menlo Park, CA 94025 (SCHEDULE 13G, 2026-08-13).
What the percentages are based on
As of June 30, 2026, each of the Reporting Persons were deemed to be the beneficial owner constituting approximately 6.97% of the total number of shares outstanding (based upon the information provided by the Issuer in Form 10-Q filed, there were approximately 21,527,946 Shares outstanding as of June 12, 2026).Magnetar Financial LLC, SCHEDULE 13G, 2026-08-13
Purpose of Transaction (Item 4)
Paddington Partners 88 LLC
Pursuant to the Securities Subscription Agreement dated as of December 15, 2025, between the Sponsor and the Issuer as more fully described in Item 6 of this Section 13D, which information is incorporated by reference, the Sponsor paid $25,000, to cover certain of the Issuer's offering costs in exchange for 6,325,000 Ordinary Shares (including an aggregate of up to 825,000 shares subject to forfeiture to the extent that the underwriters' over-allotment is not exercised in full)(the "Founder Shares"). On May 4, 2026, simultaneously with the consummation of the Issuer's Initial Public Offering (the "IPO"), the Sponsor purchased 594,500 private placement units ("Placement Units") of the Issuer at $10.00 per Placement Unit, for an aggregate purchase price of $5,945,000, pursuant to a Private Placement Units Purchase Agreement, dated as of May 4, 2026, by and between the Issuer and the Sponsor (the "Placement Units Purchase Agreement"), as more fully described in Item 6 of this Schedule 13D, which information is incorporated herein by reference. Each Placement Unit consists of one Ordinary Share and one redeemable warrant (as described more fully in the Issuer's Final Prospectus dated May 4, 2026). The Ordinary Shares owned by the Reporting Persons have been acquired for investment purposes. The Reporting Persons may make further acquisitions of the Ordinary Shares from time to time and, subject to certain restrictions, may dispose of any or all of the Ordinary Shares held by …The first part of Item 4 of the SCHEDULE 13D filed 2026-05-08; the filing has the rest
Timeline
| Filed | Holder | Percent | Filing |
|---|---|---|---|
| 2026-05-01 | The K2 Principal Fund, L.P. | 5% | SCHEDULE 13G |
| 2026-05-07 | Millennium Management LLC | 6.1% | SCHEDULE 13G |
| 2026-05-08 | Paddington Partners 88 LLC | 25.7% | SCHEDULE 13D |
| 2026-08-11 | Millennium Management LLC | 4% | SCHEDULE 13G/A |
| 2026-08-13 | Glazer Capital, LLC | 6.98% | SCHEDULE 13G |
| 2026-08-13 | Magnetar Financial LLC | 6.97% | SCHEDULE 13G |
| 2026-08-13 | Decagon Asset Management LLP | 5.24% | SCHEDULE 13G |
Questions about who owns Quantum Leap Acquisition Corp
Who owns Quantum Leap Acquisition Corp?
On this page, 5 holders' latest ownership filings report 5% or more of Quantum Leap Acquisition Corp: Paddington Partners 88 LLC (25.7%, Schedule 13D, filed 2026-05-08), Glazer Capital, LLC (6.98%, Schedule 13G, filed 2026-08-13), Magnetar Financial LLC (6.97%, Schedule 13G, filed 2026-08-13), Decagon Asset Management LLP (5.24%, Schedule 13G, filed 2026-08-13) and The K2 Principal Fund, L.P. (5%, Schedule 13G, filed 2026-05-01).
Who are the largest shareholders of Quantum Leap Acquisition Corp?
By the share each holder's latest filing reports, the largest holders of Quantum Leap Acquisition Corp on this page are Paddington Partners 88 LLC (25.7%), Glazer Capital, LLC (6.98%) and Magnetar Financial LLC (6.97%).
When did Paddington Partners 88 LLC buy into Quantum Leap Acquisition Corp?
The filings give report dates, not purchase dates. The earliest filing from Paddington Partners 88 LLC on this page is the Schedule 13D, filed 2026-05-08, reporting 25.7%.
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 Quantum Leap Acquisition Corp
| Date | Record | Figure | Our page | Source |
|---|---|---|---|---|
| May 6, 2026 | Leadership change filing (Form 8-K, Item 5.02) | — | Leadership changes | Source |
| May 4, 2026 | IPO filing, Form 424B4 | — | IPO filings | Source |
| May 4, 2026 | IPO filing, Form 424B4 | — | IPO filings | Source |
| April 28, 2026 | IPO filing, Form S-1/A | — | IPO filings | Source |
| April 27, 2026 | IPO filing, Form S-1/A | — | IPO filings | Source |
| February 27, 2026 | IPO filing, Form S-1/A | — | IPO filings | Source |
| February 10, 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.