Allergy Therapeutics (AGY) Stock Chart & Stock Price History GBX 8.30 0.00 (0.00%) As of 09/19/2025 11:53 AM Eastern Add Compare Share Share Chart Stock AnalysisChartCompetitorsEarningsHeadlinesBuy This Stock Allergy Therapeutics Stock Price Performance The Allergy Therapeutics (AGY) stock chart highlights key performance trends across multiple timeframes. Over the last 12 months, the stock's price has increased 74.74%, with a year-to-date return of 27.20%. In the past month, the stock has decreased 4.60%, reflecting recent market activity. As of the latest close, Allergy Therapeutics traded at GBX 8.30 with a market cap of £395.62 million and volume of 51,600 shares. Five years ago, the stock traded at GBX 18.13, representing a 54.21% decrease over that period. At the time, it had a market cap of £115.51 million and a volume of 136,100 shares. 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Read our full terms of service and privacy policy. 5 Day Performance0.00%1 Month Performance-4.60%3 Month Performance+20.29%Year-To-Date Performance+27.20%1 Year Performance+74.74%5 Year Performance-54.21% AGY Stock Chart for Saturday, September, 20, 2025 AGY Chart by TradingView Allergy Therapeutics 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 Capitalization09/19/2025GBX 8.30GBX 8.30GBX 8.33GBX 7.8751,600 shs£395.62 million09/18/2025GBX 7.83GBX 8.30+6.06%GBX 8.30GBX 7.84166,751 shs£395.62 million09/17/2025GBX 8.30GBX 7.83-5.71%GBX 8.50GBX 7.50787,704 shs£373.02 million09/16/2025GBX 8.30GBX 8.30GBX 8.30GBX 7.78373,247 shs£395.62 million09/15/2025GBX 8.30GBX 8.30GBX 8.30GBX 7.76381,253 shs£395.62 million09/12/2025GBX 8.30GBX 8.30GBX 8.50GBX 7.50435,925 shs£395.62 million09/11/2025GBX 8GBX 8.30+3.75%GBX 8.50GBX 7.5019,254 shs£395.62 million09/10/2025GBX 8.10GBX 8-1.23%GBX 8.08GBX 7.50479,093 shs£381.32 million09/09/2025GBX 8.35GBX 8.10-2.99%GBX 8.15GBX 7.50389,219 shs£386.08 million09/08/2025GBX 7.50GBX 8.35+11.33%GBX 8.50GBX 8.2966,412 shs£398.00 million Get the Latest News and Ratings for AGY and Related StocksEnter your email address below to receive the latest news and analysts' ratings for Allergy Therapeutics and its competitors with MarketBeat's FREE daily newsletter. 09/05/2025GBX 8.50GBX 7.50-11.76%GBX 8.70GBX 7.50154,145 shs£357.48 million09/04/2025GBX 8.50GBX 8.50GBX 8.50GBX 7.50189,991 shs£405.15 million09/03/2025GBX 8.50GBX 8.50GBX 8.50GBX 7.5067,114 shs£405.15 million09/02/2025GBX 8.50GBX 8.50GBX 9GBX 7.94127,774 shs£405.15 million09/01/2025GBX 7.85GBX 8.50+8.28%GBX 8.60GBX 7.91115,372 shs£405.15 million08/29/2025GBX 7.85GBX 7.85GBX 8.18GBX 7.50135,991 shs£385.83 million08/28/2025GBX 8.50GBX 7.85-7.65%GBX 8.20GBX 7.8519,300 shs£385.83 million08/27/2025GBX 8.70GBX 8.50-2.30%GBX 8.50GBX 7.5042,857 shs£417.78 million08/26/2025GBX 8.70GBX 8.70GBX 8.70GBX 7.5069,097 shs£427.61 million08/25/2025GBX 8.70GBX 8.70GBX 8.75GBX 8.2027,894 shs£427.61 million08/22/2025GBX 8.70GBX 8.70GBX 8.75GBX 8.2027,894 shs£427.61 million08/21/2025GBX 8.70GBX 8.70GBX 8.75GBX 7.5039,760 shs£427.61 million08/20/2025GBX 8.70GBX 8.70GBX 8.75GBX 7.7737,008 shs£427.61 million08/19/2025GBX 8.40GBX 8.70+3.57%GBX 8.75GBX 7.95195,123 shs£427.61 million Related Companies APH Stock Chart BXP Stock Chart ANCR Stock Chart STX Stock Chart VLG Stock Chart EAH Stock Chart PXS Stock Chart CHLL Stock Chart CEL Stock Chart N4P Stock Chart Receive AGY Stock News and Ratings via EmailSign-up to receive the latest news and ratings for Allergy Therapeutics and its competitors with MarketBeat's FREE daily newsletter. 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