MarketBeat's stock screener tool has identified Exxon Mobil, NuScale Power, Linde, Air Products and Chemicals, Shell, Plug Power, and Energy Transfer as the top hydrogen stocks to watch today. These companies are involved in various aspects of the hydrogen economy, including production, storage, distribution, and fuel-cell technology. Investors buy hydrogen stocks to gain exposure to the expanding low-carbon energy market, with options like 'green' hydrogen produced from renewable sources or 'blue' hydrogen with carbon capture. The article highlights that these firms also focus on complementary infrastructure like electrolyzers and fueling stations. Exxon Mobil, a company engaged in oil and gas exploration, saw its stock trade down on Friday, while NuScale Power, specializing in modular nuclear power plants for various applications including hydrogen production, also experienced a decrease in stock value. Linde, an industrial gas company offering a range of gases including hydrogen, witnessed a decline in its stock price as well. In contrast, Air Products and Chemicals, providing atmospheric and specialty gases including hydrogen, saw an increase in its stock value. Shell, an energy and petrochemical company, operates globally across various segments including renewables. The mention of these companies in the context of hydrogen stocks reflects the market's interest in sustainable energy sources. These stocks are monitored based on key indicators like market cap, trading volume, P/E ratio, and price range to assess their performance in the market. Overall, the article underscores the positive outlook on hydrogen stocks and their significance in the transition to a low-carbon economy.