Natural Alternatives International Stock Price History
NASDAQ: NAIIHealth Care Medicinal Chemicals and Botanical Products USD
At close: Oct 9, 4:00 PM ET · Delayed 15 min
NAII price history at a glance
The price history for Natural Alternatives International (NAII) on this page begins on October 7, 2026, when the stock closed at $1.29; it most recently closed at $1.14 on October 9, 2026. The highest price in this record is $1.42, reached on October 7, 2026; the latest close is 19.7% below that peak. Prices are split-adjusted closing prices; daily open, high, low, close and volume for the past year are listed below.
Summary generated from market data by MetaCap's automated system. Methodology
Key price levels
- High since 2026
- $1.42
- Date of high
- Oct 7, 2026
- Low since 2026
- $1.11
- Date of low
- Oct 9, 2026
- 52-week high
- $4.96
- 52-week low
- $1.11
- Last close
- $1.14
NAII returns
1 week
-11.63%
NAII price return, excluding dividends.
NAII daily prices (past year)
| Date | Open | High | Low | Close | Change |
|---|---|---|---|---|---|
| 1.18 | 1.42 | 1.11 | 1.14 | -0.44% | |
| 1.38 | 1.38 | 1.12 | 1.15 | -11.24% | |
| 1.33 | 1.42 | 1.21 | 1.29 | — |
Prices are adjusted for stock splits. See adjusted closing price for how dividends and splits affect history, and the NAII chart for longer ranges.