Grammer (GMM) Stock Chart & Stock Price History €6.20 -0.05 (-0.80%) As of 09/19/2025 Add Compare Share Share Chart Stock AnalysisChartHeadlinesBuy This Stock Grammer Stock Price Performance The Grammer (GMM) stock chart highlights key performance trends across multiple timeframes. Over the last 12 months, the stock's price has decreased 27.91%, with a year-to-date return of 29.17%. In the past month, the stock has decreased 10.14%, reflecting recent market activity. As of the latest close, Grammer traded at €6.25 with a market cap of €91.52 million and volume of 1,430 shares. Five years ago, the stock traded at €18.00, representing a 65.56% decrease over that period. At the time, it had a market cap of €220.99 million and a volume of 1,296 shares. Receive GMM Stock News and Ratings via EmailSign-up to receive the latest news and ratings for Grammer and its competitors with MarketBeat's FREE daily newsletter. 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Read our full terms of service and privacy policy. 5 Day Performance+1.64%1 Month Performance-10.14%3 Month PerformanceN/AYear-To-Date Performance+29.17%1 Year Performance-27.91%5 Year Performance-65.56% GMM Stock Chart for Saturday, September, 20, 2025 GMM Chart by TradingView Grammer 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 Capitalization09/19/2025€6.45€6.25-3.10%€6.35€6.251,430 shs$91.52 million09/18/2025€6.25€6.45+3.20%€6.45€6.35831 shs$94.45 million09/17/2025€6.25€6.25€6.25€6.10400 shs$91.52 million09/16/2025€6.10€6.25+2.46%€6.30€6.051,120 shs$91.52 million09/15/2025€6.10€6.10€6.10€6.0093 shs$89.33 million09/11/2025€6.30€6.15-2.38%€6.15€6.1533 shs$90.06 million09/09/2025€6.30€6.35+0.79%€6.45€6.352 shs$92.99 million09/08/2025€6.30€6.30€6.30€6.10228 shs$92.26 million09/05/2025€6.65€6.40-3.76%€6.50€6.351,601 shs$93.72 million09/04/2025€6.65€6.65€6.75€6.65255 shs$97.38 million Get the Latest News and Ratings for GMM and Related StocksEnter your email address below to receive the latest news and analysts' ratings for Grammer and its competitors with MarketBeat's FREE daily newsletter. 09/02/2025€6.50€6.65+2.31%€6.65€6.55813 shs$97.38 million08/29/2025€6.55€6.55€6.55€6.50150 shs$95.92 million08/28/2025€6.90€6.55-5.07%€6.80€6.551,587 shs$95.92 million08/26/2025€6.85€6.90+0.73%€6.95€6.90172 shs$101.04 million08/25/2025€6.85€6.85€6.85€6.75430 shs$100.31 million08/20/2025€6.75€6.90+2.22%€6.90€6.80175 shs$101.04 million08/19/2025€6.80€6.75-0.74%€6.95€6.75405 shs$98.84 million Related Companies L'Air Liquide Stock Price Chart SAP Stock Price Chart ElringKlinger Stock Price Chart Bertrandt Aktiengesellschaft Stock Price Chart Voltabox Stock Price Chart Continental Aktiengesellschaft Stock Price Chart Plastiques du Val de Loire Stock Price Chart Knorr-Bremse Stock Price Chart HELLA GmbH & Co. KGaA Stock Price Chart JOST Werke Stock Price Chart Receive GMM Stock News and Ratings via EmailSign-up to receive the latest news and ratings for Grammer and its competitors with MarketBeat's FREE daily newsletter. This page (ETR:GMM) was last updated on 9/20/2025 by MarketBeat.com Staff From Our PartnersCrypto Gets Official Government Backing—Here's the WinnerTrump Just Signed the GENIUS Act—One Coin is About to Explode We're at the BEGINNING of smart money really ...Crypto 101 Media | SponsoredIRS Wants Another Check on Sept 15th—What If You Could Keep It Instead?On September 15th, the IRS collects another round of quarterly tax payments—targeting self-employed profession...American Alternative | SponsoredAn $8 trillion-dollar discovery 17,000 ft underwater A strange rock pulled from the ocean floor may hold the key to a $16 trillion resource boom. 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