Alpha and Omega Semiconductor (AOSL) Stock Chart & Stock Price History $27.95 0.00 (0.00%) Closing price 09/5/2025 04:00 PM EasternExtended Trading$27.94 0.00 (-0.02%) As of 09/5/2025 04:42 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 ForecastsChartCompetitorsEarningsFinancialsHeadlinesInsider TradesOptions ChainOwnershipSEC FilingsShort InterestTrendsBuy This Stock Alpha and Omega Semiconductor Stock Price Performance The Alpha and Omega Semiconductor (AOSL) stock chart highlights key performance trends across multiple timeframes. Over the last 12 months, the stock's price has decreased 12.93%, with a year-to-date return of -24.52%. In the past month, the stock has increased 8.21%, reflecting recent market activity. As of the latest close, Alpha and Omega Semiconductor traded at $27.95 with a market cap of $838.78 million and volume of 303,859 shares. Five years ago, the stock traded at $12.78, representing a 118.70% increase over that period. At the time, it had a market cap of $337.10 million and a volume of 141,500 shares. Receive AOSL Stock News and Ratings via EmailSign-up to receive the latest news and ratings for Alpha and Omega Semiconductor 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+0.58%1 Month Performance+8.21%3 Month Performance+21.68%Year-To-Date Performance-24.52%1 Year Performance-12.93%5 Year Performance+118.70% AOSL Stock Chart for Monday, September, 8, 2025 AOSL Chart by TradingView Alpha and Omega Semiconductor 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 Capitalization09/05/2025$27.95$27.95$28.71$27.65303,859 shs$838.78 million09/04/2025$27.79$27.95+0.58%$28.17$27.21256,973 shs$838.78 million09/03/2025$28.26$27.79-1.66%$28.67$27.47211,745 shs$833.98 million09/02/2025$28.77$28.26-1.77%$28.33$27.49197,786 shs$848.20 million09/01/2025$28.77$28.77$29.77$28.42230,128 shs$863.39 million08/29/2025$29.92$28.77-3.84%$29.77$28.42230,128 shs$846.41 million08/28/2025$29.61$29.92+1.05%$30.30$29.27216,375 shs$880.25 million08/27/2025$29.15$29.61+1.58%$29.79$28.95172,871 shs$870.98 million08/26/2025$28.09$29.15+3.77%$29.19$28.24197,908 shs$857.59 million08/25/2025$28.84$28.09-2.60%$28.91$27.96166,282 shs$826.41 million Get the Latest News and Ratings for AOSL and Related StocksEnter your email address below to receive the latest news and analysts' ratings for Alpha and Omega Semiconductor and its competitors with MarketBeat's FREE daily newsletter. 08/22/2025$26.72$28.84+7.93%$28.98$27.00215,836 shs$848.47 million08/21/2025$26.28$26.72+1.67%$26.74$25.60170,193 shs$786.10 million08/20/2025$26.40$26.28-0.45%$26.68$25.30271,826 shs$773.16 million08/19/2025$26.43$26.40-0.11%$26.80$25.96176,861 shs$776.69 million08/18/2025$26.50$26.43-0.26%$26.92$26.30170,961 shs$777.57 million08/15/2025$27.06$26.50-2.07%$27.01$26.15150,103 shs$779.63 million08/14/2025$27.66$27.06-2.17%$27.22$26.47169,252 shs$795.97 million08/13/2025$27.30$27.66+1.32%$27.94$27.04185,394 shs$813.76 million08/12/2025$25.28$27.30+7.99%$27.80$25.59254,423 shs$803.17 million08/11/2025$25.83$25.28-2.13%$26.20$25.13260,615 shs$743.61 million08/08/2025$24.69$25.83+4.62%$25.83$24.12301,078 shs$759.79 million08/07/2025$26.20$24.69-5.76%$25.28$20.67695,756 shs$726.38 million08/06/2025$26.07$26.20+0.50%$26.48$25.32198,546 shs$770.80 million Related Companies Advanced Energy Industries Stock Price Chart Amkor Technology Stock Price Chart Cohu Stock Price Chart Diodes Stock Price Chart Lam Research Stock Price Chart Microchip Technology Stock Price Chart MKS Stock Price Chart NXP Semiconductors Stock Price Chart Power Integrations Stock Price Chart Ultra Clean Stock Price Chart Receive AOSL Stock News and Ratings via EmailSign-up to receive the latest news and ratings for Alpha and Omega Semiconductor and its competitors with MarketBeat's FREE daily newsletter. 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