Nano Nuclear Energy
NNE on Nasdaq. Nano Nuclear Energy sells nuclear reactors and fuel services to power and industrial customers. Market value $833m.
Price checks use the past 12 months to June 2026. Some use the latest annual report instead, as marked. Quality checks use five annual reports, the latest for the year to September 2025.
Should I look at this?
Not a fit for our list right now
Why it could be worth it
See Utilities stocks that passed both tests
This is not advice. Check the numbers below.
For every $100 of what the whole company costs, it produced $-4.57 of spare cash in the past 12 months. A savings account pays about $4.
The filings do not give us enough to work this out.
The filings do not give us enough to work this out.
Quality score: not known. Price score: 16 of 100. Our list needs 70 on quality and 60 on price.
$15.51 a share, 5% above its 1-year low
Over the past year the price has ranged from $14.71 to $60.87.
Pays no dividend
Prices from Monday’s close (5 October).
Five years of cash, in billions
| Revenue | ||
| Revenue | n/a | n/a |
| Operating margin | ||
| Operating margin | n/a | n/a |
| Debt to equity | ||
| Debt to equity | 0.00 | 0.00 |
| Shares outstanding | ||
| Shares outstanding | 0.04bn | 0.05bn |
Health checks
- Free cash flow positive0 of 2 years
- Accounting looks honest (Beneish)Not enough data
- Financial strength (Piotroski)Not enough data
- Profit backed by cash (accruals)No
- Debt0.00× equity
- Revenue growth, five yearsUnknown
- Buying back its own sharesNo, 29% more shares since 2024
The quarter to June 2026
How the business did, compared with the same quarter a year earlier.
- A loss of $10 million, compared with a loss of $8 million a year ago.
- 34% more shares than a year ago. Each share owns a bit less of the company.
- It has $298 million more cash than debt, up from $210 million a year ago.
| Quarter to | Amount |
|---|---|
| September 2024 | -$2m |
| December 2024 | -$3m |
| March 2025 | -$21m |
| June 2025 | -$8m |
| September 2025 | -$8m |
| December 2025 | -$7m |
| March 2026 | -$9m |
| June 2026 | -$10m |
From the company's quarterly reports to the SEC.
Dates
- Next results (estimated)
- n/a
- Last annual report (10-K)
- 18 December 2025
- Next quarterly (estimated, 10-Q)
- 11 November 2026
Who owns it
None of the long-term investors we follow own it. 233 funds in all.
Largest holders overall
- VAN ECK Associates$81mAdded
- BlackRock$74mAdded
- Mirae Asset Global Etfs Holdings$65m
- Vanguard Capital Management$36mAdded
- Geode Capital Management$23mAdded
- State Street$22mAdded
- UBS Group AG$16mAdded
- Morgan Stanley$14mAdded
- Exchange Traded Concepts$13mAdded
- Northern Trust$8mAdded
From 13F filings for the quarter ended 30 June 2026.
Big holders and activists
5 investors own more than 5%.
- Jiang YuPassive investorat least 17.5%−2.1 pts(filed with 1 related holder)Since 28 January 2026
- Van Eck Associates CorporationPassive investor7.3%+1.1 ptsSince 30 June 2026
- BlackRock, Inc.Passive investor6.5%+1.1 ptsSince 30 June 2026
- Global X Management CO LLCPassive investor5.6%Since 31 March 2026
- Kenneth GriffinPassive investorat least 3.9%−1.2 pts(filed with 6 related holders)Since 31 December 2025
| Holder | Stake | Since | |
|---|---|---|---|
Jiang Yu Passive investor | at least 17.5%−2.1 pts (filed with 1 related holder) | 28 January 2026 | |
Van Eck Associates Corporation Passive investor | 7.3%+1.1 pts | 30 June 2026 | |
BlackRock, Inc. Passive investor | 6.5%+1.1 pts | 30 June 2026 | |
Global X Management CO LLC Passive investor | 5.6% | 31 March 2026 | |
Kenneth Griffin Passive investor | at least 3.9%−1.2 pts (filed with 6 related holders) | 31 December 2025 |
From Schedule 13D and 13G filings: anyone owning more than 5% must file one.
What insiders did
No insider bought shares on the open market in the last 12 months. 8 sold $100m, $100m of it under preset trading plans.
- Walker James JohnChief Executive Officer, DirectorSoldunder a preset trading plan
- Date
- 3 September 2026
- Shares
- 25,000
- Price
- $17.77
- Value
- $444,168
- Yu JiangPresident and Chairman, DirectorSoldunder a preset trading plan
- Date
- 2 September 2026
- Shares
- 141,931
- Price
- $17.48
- Value
- $2m
- Yu JiangPresident and Chairman, DirectorSoldunder a preset trading plan
- Date
- 1 September 2026
- Shares
- 332,569
- Price
- $17.45
- Value
- $6m
- Walker James JohnChief Executive Officer, DirectorSoldunder a preset trading plan
- Date
- 1 September 2026
- Shares
- 25,000
- Price
- $17.44
- Value
- $436,065
- Heidet FlorentChief Technology OfficerSold
- Date
- 5 June 2026
- Shares
- 3,000
- Price
- $24.95
- Value
- $74,850
- Berl Seth JasonDirectorSold
- Date
- 5 June 2026
- Shares
- 3,750
- Price
- $24.92
- Value
- $93,450
- Hare Diane ElizabethDirectorSoldunder a preset trading plan
- Date
- 3 June 2026
- Shares
- 3,428
- Price
- $26.64
- Value
- $91,330
- Yu JiangPresident and Chairman, DirectorSoldunder a preset trading plan
- Date
- 3 June 2026
- Shares
- 745,900
- Price
- $26.68
- Value
- $20m
- Garcha JaisunChief Financial OfficerSoldunder a preset trading plan
- Date
- 3 June 2026
- Shares
- 37,215
- Price
- $26.48
- Value
- $985,489
- Berl Seth JasonDirectorSold
- Date
- 2 March 2026
- Shares
- 3,664
- Price
- $27.69
- Value
- $101,456
| Date | Who | Did | Shares | Price | Value |
|---|---|---|---|---|---|
| 3 September 2026 | Walker James John Chief Executive Officer, Director | Sold under a preset trading plan | 25,000 | $17.77 | $444,168 |
| 2 September 2026 | Yu Jiang President and Chairman, Director | Sold under a preset trading plan | 141,931 | $17.48 | $2m |
| 1 September 2026 | Yu Jiang President and Chairman, Director | Sold under a preset trading plan | 332,569 | $17.45 | $6m |
| 1 September 2026 | Walker James John Chief Executive Officer, Director | Sold under a preset trading plan | 25,000 | $17.44 | $436,065 |
| 5 June 2026 | Heidet Florent Chief Technology Officer | Sold | 3,000 | $24.95 | $74,850 |
| 5 June 2026 | Berl Seth Jason Director | Sold | 3,750 | $24.92 | $93,450 |
| 3 June 2026 | Hare Diane Elizabeth Director | Sold under a preset trading plan | 3,428 | $26.64 | $91,330 |
| 3 June 2026 | Yu Jiang President and Chairman, Director | Sold under a preset trading plan | 745,900 | $26.68 | $20m |
| 3 June 2026 | Garcha Jaisun Chief Financial Officer | Sold under a preset trading plan | 37,215 | $26.48 | $985,489 |
| 2 March 2026 | Berl Seth Jason Director | Sold | 3,664 | $27.69 | $101,456 |
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.
None of the warning signs we check for were found.
We look for five warning signs: doubt it can keep going, weak checks on its own accounts, a notice that its past accounts can't be relied on, a change of auditor, and one customer bringing in a big share of sales. We don't check lawsuits, investigations or debt yet.
We checked the auditor's report, internal controls, restatement notices, auditor changes and big customers in the 10-K filed 18 Dec 2025, plus the 10-Q filed 12 Aug 2026 and 12 later 8-Ks.
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.
What could go wrong
Cheap for a reason is the question the numbers cannot answer.
Whether the price already reflects the risks is what the deep dive is for.
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
The company just told the SEC about a big change. The deep dive shows what it means for the price you pay.
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.