Natural Alternatives International (NAII) Stock Chart & Stock Price History $2.68 -0.03 (-1.11%) Closing price 10/8/2025 04:00 PM EasternExtended Trading$2.68 +0.00 (+0.19%) As of 10/8/2025 04:02 PM Eastern Extended trading is trading that happens on electronic markets outside of regular trading hours. This is a fair market value extended hours price provided by Polygon.io. Learn more. Add Compare Share Share Chart Stock AnalysisAnalyst ForecastsChartCompetitorsEarningsHeadlinesOwnershipSEC FilingsShort InterestTrendsBuy This Stock Natural Alternatives International Stock Price Performance The Natural Alternatives International (NAII) stock chart highlights key performance trends across multiple timeframes. Over the last 12 months, the stock's price has decreased 44.17%, with a year-to-date return of -37.82%. In the past month, the stock has decreased 19.66%, reflecting recent market activity. As of the latest close, Natural Alternatives International traded at $2.68 with a market cap of $16.56 million and volume of 13,221 shares. Five years ago, the stock traded at $7.90, representing a 66.08% decrease over that period. At the time, it had a market cap of $51.52 million and a volume of 5,945 shares. Receive NAII Stock News and Ratings via EmailSign-up to receive the latest news and ratings for Natural Alternatives International and its competitors with MarketBeat's FREE daily newsletter. Subscribe Now View SMS TermsBy entering your phone number and clicking the sign-up button, you agree to receive periodic text messages from MarketBeat at the phone number you submitted, including texts that may be sent using an automatic telephone dialing system. Message and data rates may apply. Message frequency will vary. Messages will consist of stock alerts, news stories, and partner advertisements/offers. Consent is not a condition of the purchase of any goods or services. 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Read our full terms of service and privacy policy. 5 Day Performance-4.96%1 Month Performance-19.66%3 Month Performance-21.75%Year-To-Date Performance-37.82%1 Year Performance-44.17%5 Year Performance-66.08% NAII Stock Chart for Thursday, October, 9, 2025 NAII Chart by TradingView Natural Alternatives International Stock Price History Daily Weekly Monthly Yearly Time Frame Custom Range 1 Month 3 Months 6 Months Year-to-Date 1 Year 3 Year 5 Year Time Frame Start Date End Date Export to Excel DateOpening PriceClosing PriceHighLowVolumeMarket Capitalization10/08/2025$2.71$2.68-1.11%$2.80$2.6713,221 shs$16.56 million10/07/2025$2.76$2.71-1.81%$2.88$2.7023,253 shs$16.75 million10/06/2025$2.82$2.76-2.13%$2.90$2.7613,935 shs$17.05 million10/03/2025$2.75$2.82+2.55%$2.92$2.7816,207 shs$17.42 million10/02/2025$2.90$2.75-5.17%$2.89$2.7319,256 shs$17.00 million10/01/2025$2.84$2.90+2.29%$2.91$2.7610,271 shs$17.92 million09/30/2025$2.91$2.84-2.58%$2.91$2.746,225 shs$17.51 million09/29/2025$2.88$2.91+1.04%$2.93$2.763,167 shs$17.98 million09/26/2025$2.99$2.88-3.68%$2.99$2.8713,672 shs$17.80 million09/25/2025$3.05$2.99-1.97%$2.99$2.936,689 shs$18.48 million Get the Latest News and Ratings for NAII and Related StocksEnter your email address below to receive the latest news and analysts' ratings for Natural Alternatives International and its competitors with MarketBeat's FREE daily newsletter. 09/24/2025$3.13$3.05-2.56%$3.20$2.9315,289 shs$18.85 million09/23/2025$3.03$3.13+3.30%$3.30$2.972,352 shs$19.34 million09/22/2025$3.12$3.03-2.88%$3.15$3.001,747 shs$18.73 million09/19/2025$3.25$3.12-4.00%$3.28$3.025,789 shs$19.28 million09/18/2025$3.01$3.25+7.97%$3.38$3.016,994 shs$20.08 million09/17/2025$3.13$3.01-3.83%$3.17$2.895,541 shs$18.60 million09/16/2025$3.23$3.13-3.10%$3.21$3.114,903 shs$19.34 million09/15/2025$3.50$3.23-7.71%$3.45$3.226,451 shs$19.96 million09/12/2025$3.59$3.50-2.51%$3.58$3.442,276 shs$21.63 million09/11/2025$3.37$3.59+6.53%$3.87$3.3612,150 shs$22.19 million09/10/2025$3.34$3.37+1.02%$3.40$3.325,615 shs$20.83 million09/09/2025$3.41$3.34-2.17%$3.40$3.284,286 shs$20.61 million09/08/2025$3.60$3.41-5.28%$3.83$3.4021,585 shs$21.07 million Related Companies aTyr Pharma Stock Chart Artiva Biotherapeutics Stock Chart Adlai Nortye Stock Chart Hyperion DeFi Stock Chart Precision BioSciences Stock Chart NRx Pharmaceuticals Stock Chart Relmada Therapeutics Stock Chart CEL-SCI Stock Chart Gain Therapeutics Stock Chart MiNK Therapeutics Stock Chart Receive NAII Stock News and Ratings via EmailSign-up to receive the latest news and ratings for Natural Alternatives International and its competitors with MarketBeat's FREE daily newsletter. 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