Ridgetech
RDGT on Nasdaq. Market value $118m.
Should I look at this?
We have not checked this company yet
This is not advice.
Who owns it
None of the long-term investors we follow own it. 5 funds in all.
Largest holders overall
- HRT Financial LP$135,000New
- Virtu Financial$43,000New
- UBS Group AG$12,101New
- Hhlr Advisors$204New
- Harbour Investments$2Cut
From 13F filings for the quarter ended 30 June 2026.
Big holders and activists
No one has reported a stake above 5% since December 2024.
- LINGTAO KONGInsider or founderSold down below 5%Since 16 July 2026
- LEI LIUSold down below 5%Since 28 February 2025
What they said
Item 4 of the Schedule 13D is hereby amended and supplemented by adding the following information: As reported on Form 6-K furnished by the Issuer on February 3, 2025, the Reporting Person, Li Qi and Oakview International Limited ("Oakview") have agreed to surrender for no…
Read the filing
| Holder | Stake | Since | |
|---|---|---|---|
LINGTAO KONG Insider or founder | Sold down below 5% | 16 July 2026 | |
LEI LIU | Sold down below 5% | 28 February 2025 | What they saidItem 4 of the Schedule 13D is hereby amended and supplemented by adding the following information: As reported on Form 6-K furnished by the Issuer on February 3, 2025, the Reporting Person, Li Qi and Oakview International Limited ("Oakview") have agreed to surrender for no… Read the filing |
From Schedule 13D and 13G filings: anyone owning more than 5% must file one.
What insiders did
No insider bought or sold on the open market in the last 12 months.
From Form 4 filings: insiders must report trades in their own company's shares within two days.
Warning signs in its filings
Problems the company itself reported to the SEC, in its own words.
Ridgetech doesn’t file a US annual report (10-K), so we haven’t checked it.
A 10-K is the yearly report every US company files with the SEC. An 8-K is a short notice of a big event.
The deep dive
Everything above is arithmetic on public filings. The deep dive reads the last ten years of annual reports, the proxy statements, and the earnings calls, then argues the case the way Buffett, Klarman, and Hohn would, and checks every claim against the source.
- What the business is worth, as a range, and the margin of safety at today’s price
- Prices to start buying, buy, and buy hard
- The three things that would make this a mistake
- Every number footnoted to the filing it came from
Your first deep dive is free.
Not advice. Numbers on this page come from SEC filings and are updated each night; prices are updated again after the US market closes. The five-year figures are rounded.