Comparable stake leader
Diamond Horses Group Ltd
SEC ownership of Luda Technology Group Ltd
Top holders, 13D/G large-stake signals, insider positions, and transaction flow tied to CIK 0001984124.
Disclosed value leader
Ma Biu
Comparable rows
5/5
Latest evidence
31 Mar 2026
- Public ticker
- LUD on NYSE
- Parsed ownership sources
- 13D/G, 3/4/5, and 13F
- Largest SEC-reported holder
- Diamond Horses Group Ltd
- Latest 13D/G holder
- Diamond Horses Group Ltd
- Latest parsed ownership date
- 31 Mar 2026
- Issuer CIK
- 0001984124
- Issuer location
- Wanchai
Ownership snapshot
CIK-linked ownership evidence from parsed SEC filings.
2 signals
Issuer
Names, identifiers, and filing context for this profile.
2 identity fields
Ownership snapshot
Top shareholders of Luda Technology Group 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
Diamond Horses Group Ltd
Disclosed value leader
Ma Biu
Comparable rows
5/5
Latest evidence
31 Mar 2026
13D/G
3/4/5
13F
Lead comparable stake: 89%
13D/G row: Diamond Horses Group Ltd
Quick read
Diamond Horses Group Ltd leads the comparable SEC ownership view at 89%.
5 of 5 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 Diamond Horses Group Ltd's linked filing trail.
Comparable ownership
Top 5
Diamond Horses Group Ltd
89%
Ma Biu
89%
JANE STREET GROUP, LLC
0.1%
UBS Group AG
0.01%
Tower Research Capital LLC (TRC)
0.01%
Ownership % is shown only when SEC disclosures are safely comparable across share classes.
Detailed SEC evidence table Showing 1-5 of 5 holder rows
| Holder | Evidence | Ownership % | Position | 12M Net Δ | As of |
|---|---|---|---|---|---|
| Diamond Horses Group Ltd |
13D/G
Diamond Horses Group Limited
|
89%
|
$84,000,000
20,000,000 shares
|
$0 | 28 Feb 2025 |
| Ma Biu |
3/4/5
Chief Executive Officer, Director, 10%+ Owner
|
89%
|
$126,400,000
20,000,000 shares
|
— | 18 Mar 2026 |
| JANE STREET GROUP, LLC |
13F
Company
|
0.1%
|
$68,608
21,440 shares
|
— | 31 Mar 2026 |
| UBS Group AG |
13F
Company
|
0.01%
|
$8,554
2,673 shares
|
— | 31 Mar 2026 |
| Tower Research Capital LLC (TRC) |
13F
Company
|
0.01%
|
$4,800
1,500 shares
|
— | 31 Mar 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 07 Jun 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 |
Reporting owners
Insider holders from Forms 3/4/5
Showing 1-7 of 7 reporting-owner rows connected to Luda Technology Group Ltd. Open a relationship link for the CIK-to-CIK filing trail.
Rows
7
Largest Forms 3/4/5 holder
Ma Biu
Net 12M change
$0
Latest report
18 Mar 2026
| Name | Relationship | Holdings Value | Past Year Net Change | Change % | Valuation | Report Date |
|---|---|---|---|---|---|---|
| Ma Biu | Chief Executive Officer, Director, 10%+ Owner | $126,400,000 | Mixed | 18 Mar 2026 | ||
| Zhang Dajun | Chief Marketing Officer, Director | Mixed | 18 Mar 2026 | |||
| Gu Zhaoyang | Director | Mixed | 18 Mar 2026 | |||
| Yan Jonathan Jun | Director | Mixed | 18 Mar 2026 | |||
| Yung Chi Man | Chief Financial Officer | Mixed | 18 Mar 2026 | |||
| Liu Liangping | Chief Operating Officer, Director | Mixed | 18 Mar 2026 | |||
| Ho Chuen Shin | Director | Mixed | 18 Mar 2026 |
Recent insider transactions for Luda Technology Group 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| Ma Biu | LUD | Ordinary Shares | 0 | 20,000,000 | 18 Mar 2026 | By Diamond Horses Group Limited |
* marks a reported price that did not pass the local price check.