Comparable stake leader
Radical Ventures Fund II (International), L.P.
SEC ownership of Xanadu Quantum Technologies Ltd
Top holders, 13D/G large-stake signals, insider positions, and transaction flow tied to CIK 0002097163.
Disclosed value leader
Christian Weedbrook
Comparable rows
50/50
Latest evidence
22 Sep 2026
- Public ticker
- XNDU on Nasdaq
- Parsed ownership sources
-
13D/G and 13F
Source: Parsed SEC ownership filingsUse: Compare filing families carefully
- Largest SEC-reported holder
-
Radical Ventures Fund II (International), L.P.
Ranking: Comparable ownership first, then disclosed value
- Comparable ownership rows
-
50 of 50
Meaning: Rows with safely comparable ownership %
- Latest 13D/G holder
-
Radical Ventures Fund II (International), L.P.
Source: Latest parsed Schedule 13D/G stake
- Latest parsed ownership date
-
22 Sep 2026
Freshness: Most recent filing date in this holder set
- Issuer CIK
- 0002097163
- Issuer location
- Toronto
Ownership snapshot
CIK-linked ownership evidence from parsed SEC filings.
3 signals
Issuer
Names, identifiers, and filing context for this profile.
2 identity fields
Ownership snapshot
Top shareholders of Xanadu Quantum Technologies Ltd (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.
Comparable stake leader
Radical Ventures Fund II ...
Disclosed value leader
Christian Weedbrook
Comparable rows
50/50
Latest evidence
22 Sep 2026
13D/G
13F
Lead comparable stake: 22%
13D/G row: Radical Ventures Fund II (International), L.P.
Showing 1-8 of 50 holder rows.
Quick read
Radical Ventures Fund II (International), L.P. leads the comparable SEC ownership view at 22%.
50 of 50 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.
Open SEC evidence
Opens Radical Ventures Fund II (International), L.P.'s linked filing trail.
Comparable ownership
Top 5
Radical Ventures Fund II (Interna...
22%
Christian Weedbrook
20%
LOCKHEED MARTIN INVESTMENT MANAGE...
5.1%
Polar Asset Management Partners Inc.
4.6%
BDC CAPITAL INC.
4%
Ownership % is shown only when SEC disclosures are safely comparable across share classes.
Detailed SEC evidence table Showing 1-8 of 50 holder rows
| Holder | Evidence | Ownership % | Position | 12M Net Δ | As of |
|---|---|---|---|---|---|
| Radical Ventures Fund II (International), L.P. |
13D/G
Radical Ventures II GP Inc.
|
22%
|
$331,967,815
11,898,488 shares
|
$0 | 26 Mar 2026 |
| Christian Weedbrook |
13D/G
|
20%
|
$440,052,544
41,869,890 shares
|
$0 | 22 Sep 2026 |
| LOCKHEED MARTIN INVESTMENT MANAGEMENT CO |
13D/G
|
5.1%
|
$64,418,087
2,308,892 shares
|
$0 | 26 Mar 2026 |
| Polar Asset Management Partners Inc. |
13D/G
|
4.6%
|
$22,980,000
2,000,000 shares
|
$0 | 31 Mar 2026 |
| BDC CAPITAL INC. |
13D/G
|
4%
|
$69,970,409
6,657,508 shares
|
$0 | 20 Sep 2026 |
| MILLENNIUM MANAGEMENT LLC |
13F
13D/G
Company
|
0.2%
from 13D/G
|
$1,520,417
125,774 shares
|
— | 30 Jun 2026 |
| Dipender Saluja |
13D/G
|
0.03%
|
$603,999
57,469 shares
|
$0 | 22 Sep 2026 |
| Deer Management Co. LLC |
13F
Company
|
14%
|
$275,928,239
22,785,156 shares
|
— | 30 Jun 2026 |
How to read this table
Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
Forms 3/4/5 flow
Insider trading overview
Insider buy and sell flow is broadly balanced over the last 12 months. No Buy or Sell transactions have been reported since 16 Oct 2025.
Buys
$0
Insiders: 0
Sells
$0
Insiders: 0
Net
$0
Shares: 0
Window
Last 12 months
4 rolling buckets
Buy value
Sell value
Shares: 0
Shares: 0
| Window (months) | Buy shares | Sell shares | Buy value | Sell value | Net value |
|---|---|---|---|---|---|
| 0-3 | 0 | 0 | $0 | $0 | $0 |
| 3-6 | 0 | 0 | $0 | $0 | $0 |
| 6-9 | 0 | 0 | $0 | $0 | $0 |
| 9-12 | 0 | 0 | $0 | $0 | $0 |
Recent insider transactions for Xanadu Quantum Technologies Ltd
Showing up to 300 recent insider transactions from the last 12 months.
| Insider | Symbol | Class | Transaction | % | SEC-reported value | SEC-reported price | Shares | Shares owned | Date | Ownership |
|---|---|---|---|---|---|---|---|---|---|---|
| No insider transactions were found in the last 12 months for this issuer. | ||||||||||
* marks a reported price that did not pass the local price check.