Alpha and Omega Semiconductor (AOSL) Stock Chart & Stock Price History $26.50 -0.56 (-2.07%) Closing price 08/15/2025 04:00 PM EasternExtended Trading$26.52 +0.02 (+0.08%) As of 08/15/2025 04:10 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 29.09%, with a year-to-date return of -28.44%. In the past month, the stock has decreased 4.02%, reflecting recent market activity. As of the latest close, Alpha and Omega Semiconductor traded at $26.50 with a market cap of $779.63 million and volume of 150,103 shares. Five years ago, the stock traded at $14.05, representing a 88.61% increase over that period. At the time, it had a market cap of $286.92 million and a volume of 5,226 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. Email Address 5 Day Performance+4.83%1 Month Performance-4.02%3 Month Performance+14.52%Year-To-Date Performance-28.44%1 Year Performance-29.09%5 Year Performance+88.61% AOSL Stock Chart for Saturday, August, 16, 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 Capitalization08/15/2025$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 million08/05/2025$26.13$26.07-0.23%$26.57$25.40174,040 shs$766.85 million08/04/2025$24.82$26.13+5.28%$26.16$24.94199,717 shs$768.75 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. 08/01/2025$25.47$24.82-2.55%$25.34$24.01297,142 shs$730.20 million07/31/2025$27.01$25.47-5.70%$26.69$24.97336,898 shs$749.33 million07/30/2025$27.41$27.01-1.46%$28.00$26.57176,165 shs$794.50 million07/29/2025$28.06$27.41-2.32%$28.85$27.10145,973 shs$806.40 million07/28/2025$27.29$28.06+2.82%$28.42$27.60185,644 shs$825.53 million07/25/2025$27.48$27.29-0.69%$27.55$26.92127,613 shs$802.87 million07/24/2025$28.52$27.48-3.65%$28.50$27.34174,700 shs$808.46 million07/23/2025$28.26$28.52+0.92%$28.63$27.78202,484 shs$839.06 million07/22/2025$28.89$28.26-2.18%$29.16$27.29201,843 shs$831.41 million07/21/2025$28.65$28.89+0.84%$30.06$28.84267,440 shs$849.94 million07/18/2025$28.18$28.65+1.67%$28.93$27.86194,184 shs$842.88 million07/17/2025$27.61$28.18+2.06%$28.39$27.19202,302 shs$828.92 million07/16/2025$27.14$27.61+1.73%$27.74$26.45201,125 shs$812.29 million07/15/2025$26.79$27.14+1.31%$28.94$27.11207,533 shs$798.32 million Related Companies Advanced Energy Industries Stock Price Chart Applied Materials Stock Price Chart Amkor Technology 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. This page (NASDAQ:AOSL) was last updated on 8/16/2025 by MarketBeat.com Staff From Our PartnersGENIUS Act: Cancel Your Money?A new law called the GENIUS Act could quietly trigger the most radical shift in American finance in decades. 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