Natural Alternatives International
NAII on Nasdaq. Market value $32m.
Should I look at this?
Look carefully before going further
Why it could be worth it
Nothing stands out yet.
What to watch out for
Read the warning sign in its own filings
This is not advice.
Who owns it
None of the long-term investors we follow own it. 23 funds in all.
Largest holders overall
- Caldwell Sutter Capital$1m
- Dimensional Fund Advisors LP$802,536Cut
- Morgan Stanley$735,236Added
- Mink Brook Asset Management$701,338
- Renaissance Technologies$663,122Cut
- Vanguard Capital Management$504,003
- Integrated Wealth Concepts$210,764Added
- Citadel Advisors$181,033Added
- Bridgeway Capital Management$146,973Cut
- Geode Capital Management$104,504Cut
From 13F filings for the quarter ended 30 June 2026.
Big holders and activists
3 investors own more than 5%.
- Joseph F. HelmerPassive investorat least 7.8%(filed with 1 related holder)Since 31 December 2024
- Dimensional Fund Advisors LPPassive investor6.2%Since 31 December 2025
- Renaissance Technologies LLCPassive investorat least 5.0%(filed with 1 related holder)Since 31 December 2024
| Holder | Stake | Since | |
|---|---|---|---|
Joseph F. Helmer Passive investor | at least 7.8% (filed with 1 related holder) | 31 December 2024 | |
Dimensional Fund Advisors LP Passive investor | 6.2% | 31 December 2025 | |
Renaissance Technologies LLC Passive investor | at least 5.0% (filed with 1 related holder) | 31 December 2024 |
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 $26,844 of shares on the open market.
- LEDOUX MARK ACEO/Chairman, DirectorBought
- Date
- 6 March 2026
- Shares
- 532
- Price
- $2.80
- Value
- $1,490
- LEDOUX MARK ACEO/Chairman, DirectorBought
- Date
- 5 March 2026
- Shares
- 218
- Price
- $2.75
- Value
- $600
- LEDOUX MARK ACEO/Chairman, DirectorBought
- Date
- 4 March 2026
- Shares
- 500
- Price
- $2.77
- Value
- $1,385
- LEDOUX MARK ACEO/Chairman, DirectorBought
- Date
- 2 March 2026
- Shares
- 500
- Price
- $2.79
- Value
- $1,395
- LEDOUX MARK ACEO/Chairman, DirectorBought
- Date
- 27 February 2026
- Shares
- 500
- Price
- $2.85
- Value
- $1,425
- LEDOUX MARK ACEO/Chairman, DirectorBought
- Date
- 27 February 2026
- Shares
- 250
- Price
- $2.80
- Value
- $700
- LEDOUX MARK ACEO/Chairman, DirectorBought
- Date
- 26 February 2026
- Shares
- 500
- Price
- $2.85
- Value
- $1,425
- LEDOUX MARK ACEO/Chairman, DirectorBought
- Date
- 25 February 2026
- Shares
- 500
- Price
- $2.81
- Value
- $1,405
- LEDOUX MARK ACEO/Chairman, DirectorBought
- Date
- 24 February 2026
- Shares
- 1,000
- Price
- $2.71
- Value
- $2,710
- LEDOUX MARK ACEO/Chairman, DirectorBought
- Date
- 23 February 2026
- Shares
- 750
- Price
- $2.70
- Value
- $2,025
| Date | Who | Did | Shares | Price | Value |
|---|---|---|---|---|---|
| 6 March 2026 | LEDOUX MARK A CEO/Chairman, Director | Bought | 532 | $2.80 | $1,490 |
| 5 March 2026 | LEDOUX MARK A CEO/Chairman, Director | Bought | 218 | $2.75 | $600 |
| 4 March 2026 | LEDOUX MARK A CEO/Chairman, Director | Bought | 500 | $2.77 | $1,385 |
| 2 March 2026 | LEDOUX MARK A CEO/Chairman, Director | Bought | 500 | $2.79 | $1,395 |
| 27 February 2026 | LEDOUX MARK A CEO/Chairman, Director | Bought | 500 | $2.85 | $1,425 |
| 27 February 2026 | LEDOUX MARK A CEO/Chairman, Director | Bought | 250 | $2.80 | $700 |
| 26 February 2026 | LEDOUX MARK A CEO/Chairman, Director | Bought | 500 | $2.85 | $1,425 |
| 25 February 2026 | LEDOUX MARK A CEO/Chairman, Director | Bought | 500 | $2.81 | $1,405 |
| 24 February 2026 | LEDOUX MARK A CEO/Chairman, Director | Bought | 1,000 | $2.71 | $2,710 |
| 23 February 2026 | LEDOUX MARK A CEO/Chairman, Director | Bought | 750 | $2.70 | $2,025 |
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.
1 serious warning sign in Natural Alternatives International’s filings.
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 28 Sep 2026, and no later 8-Ks.
Doubt it can keep going
SeriousThe company or its auditor warned it may not have enough money to last the next year.
“These conditions raise substantial doubt about the Company’s ability to continue as a going concern.”
Show the full paragraph
Substantial Doubt About the Company’s Ability to Continue as a Going Concern The accompanying consolidated financial statements have been prepared assuming the Company will continue as a going concern. As discussed in Note A to the consolidated financial statements, the Company has experienced continued net losses and negative operating cash flow, a forecasted inability to meet financial covenant requirements in its credit facility agreement, and insufficient cash resources to satisfy the liabilities under the credit facility agreement should such be deemed in default and the lender exercises its rights under the agreement. These conditions raise substantial doubt about the Company’s ability to continue as a going concern. Management’s plans in regard to these matters are also described in Note A to the consolidated financial statements. The consolidated financial statements do not include any adjustments to reflect the possible future effects on the recoverability and classification of assets or the amounts and classification of liabilities that may result from the outcome of this uncertainty.
From the 10-K filed 28 September 2026, Item 8. Financial Statements and Notes - Independent auditor's report. Read it in the filing
One big customer
Worth knowingOne customer brings in a big share of sales: 28% last year. Losing that customer would hurt.
“Revenue concentration from our largest private-label contract manufacturing customer as a percentage of our total net sales was 28% in fiscal 2026, and revenue concentration from our largest private-label contract manufacturing customer as a percentage of total net sales in fiscal 2025 was 33%.”
From the 10-K filed 28 September 2026, Item 7. Management's Discussion and Analysis. Read it in the filing
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.