Natural Alternatives International Inc (Nasdaq: NAII), an SEC filer in Medicinal Chemicals & Botanical Products, closed at $2.16, -5.7%, on 2026-08-28, with a market cap of $14M, a return on equity of -18.0%, a net margin of -10.5% and 3-year sales growth of -8.8%. Institutional ownership, earnings history and filed financials are on the tabs below.
Returns use ADJUSTED closes (splits + dividends).
Volume as VALUE TRADED — close × volume, in USD.
| Year | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | NAII | SPY | Δ |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026 · ytd | +14.5% | −33.9% | −3.0% | +1.5% | −4.9% | −5.9% | −4.2% | −5.7% | — | — | — | — | −39.7% | +13.4% | −53.1pp |
| 2025 | −0.5% | −7.0% | −13.8% | −12.8% | +10.7% | −1.2% | +10.7% | +2.8% | −23.6% | −4.2% | +32.8% | −1.2% | −16.9% | +17.7% | −34.7pp |
| 2024 | −4.9% | −2.7% | +0.8% | +2.1% | +3.7% | −6.7% | −4.8% | −5.2% | +5.5% | −20.2% | +2.6% | −8.1% | −34.0% | +24.9% | −58.9pp |
| 2023 | +6.1% | +1.1% | +2.4% | −3.4% | −16.3% | −3.5% | +0.0% | −13.9% | +4.7% | −8.0% | −2.5% | +12.2% | −22.2% | +26.2% | −48.3pp |
| 2022 | +3.5% | −15.5% | +4.2% | −15.0% | +7.3% | −0.6% | −3.2% | +13.7% | −19.4% | −3.8% | −17.6% | +14.1% | −33.7% | −18.2% | −15.5pp |
| 2021 | +35.7% | +9.3% | −2.2% | −2.3% | −8.1% | +22.0% | +5.2% | −11.1% | −14.2% | −6.7% | +2.6% | −2.2% | +19.5% | +28.7% | −9.3pp |
| 2020 | +1.4% | −11.0% | −12.5% | +9.5% | −1.0% | +0.1% | −0.4% | +17.5% | −5.6% | +2.5% | +28.8% | +6.2% | +32.7% | +18.3% | +14.4pp |
| 2019 | +13.9% | +4.6% | −1.8% | +13.1% | −5.9% | −4.7% | −13.5% | −3.9% | −13.9% | +6.4% | −12.7% | +2.8% | −18.8% | +31.2% | −50.0pp |
| 2018 | +8.3% | +5.8% | −6.8% | −8.6% | +9.0% | −7.3% | +0.0% | −5.9% | +2.6% | −4.4% | +7.2% | −2.1% | −4.6% | −4.6% | +0.0pp |
| 2017 | +0.9% | −20.2% | −3.3% | +10.8% | +10.8% | −7.9% | +0.5% | +10.0% | −1.8% | −1.9% | −2.8% | +0.0% | −8.8% | +21.7% | −30.6pp |
Month-end over prior month-end; a blank cell is no return.
Basis. Both columns share one basis, so Δ is like-for-like.
End-of-day closes; a “ytd” or “part” year is not a full year.
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Years ⓘ | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 22 | 21 | 21 | 21 | 21 |
| Positive ⓘ | 62% | 52% | 33% | 43% | 57% | 33% | 33% | 41% | 43% | 29% | 48% | 43% |
| Median | +1.4% | +1.1% | −1.9% | −1.5% | +2.2% | −3.5% | −0.4% | −1.0% | −1.8% | −4.2% | −0.1% | −0.5% |
| Best | +35.7% | +55.7% | +9.3% | +13.1% | +20.1% | +22.0% | +14.5% | +17.5% | +28.7% | +49.9% | +45.6% | +34.6% |
| Worst | −23.1% | −33.9% | −13.8% | −22.3% | −16.3% | −13.6% | −13.5% | −13.9% | −23.6% | −20.2% | −17.6% | −18.2% |
| vs SPY ⓘ | +2.3pp | −1.6pp | −3.4pp | −6.2pp | +0.9pp | −4.9pp | −3.3pp | −1.2pp | −1.9pp | −4.2pp | −2.7pp | −1.2pp |
253 monthly observations · 2005–2026 · benchmark SPY
