Rank One Computing
ROC on Nasdaq. Market value $76m.
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. 19 funds in all.
Largest holders overall
- Bleichroeder LP$3m
- Alyeska Investment Group, L.P.$2m
- G2 Investment Partners Management$1mCut
- 1492 Capital Management$943,873
- MYDA Advisors$527,000
- Panoramic Capital$404,109Cut
- Citadel Advisors$370,982Added
- Boothbay Fund Management$305,375Cut
- Millennium Management$224,339New
- Geode Capital Management$177,757New
From 13F filings for the quarter ended 30 June 2026.
Big holders and activists
6 investors own more than 5%.
- Brendan KlarePassive investor24.0%−1.3 ptsSince 20 February 2026
- Joshua KlontzPassive investor24.0%−1.3 ptsSince 20 February 2026
- Scott KlumPassive investor15.8%−1.0 ptsSince 20 February 2026
- Benjamin KleinPassive investor7.4%−0.4 ptsSince 20 February 2026
- B. Scott SwannPassive investor6.5%−0.2 ptsSince 20 February 2026
- Laurence W. LyttonPassive investor5.1%Since 14 August 2026
| Holder | Stake | Since | |
|---|---|---|---|
Brendan Klare Passive investor | 24.0%−1.3 pts | 20 February 2026 | |
Joshua Klontz Passive investor | 24.0%−1.3 pts | 20 February 2026 | |
Scott Klum Passive investor | 15.8%−1.0 pts | 20 February 2026 | |
Benjamin Klein Passive investor | 7.4%−0.4 pts | 20 February 2026 | |
B. Scott Swann Passive investor | 6.5%−0.2 pts | 20 February 2026 | |
Laurence W. Lytton Passive investor | 5.1% | 14 August 2026 |
From Schedule 13D and 13G filings: anyone owning more than 5% must file one.
What insiders did
In the last 12 months, 1 insider bought $17,435 of shares on the open market.
- Kiernan Kathleen LouiseDirectorBought
- Date
- 14 September 2026
- Shares
- 4,000
- Price
- $4.36
- Value
- $17,435
| Date | Who | Did | Shares | Price | Value |
|---|---|---|---|---|---|
| 14 September 2026 | Kiernan Kathleen Louise Director | Bought | 4,000 | $4.36 | $17,435 |
From Form 4 filings: insiders must report trades in their own company's shares within two days.
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.