Tesla Just Got Called a “Must Own” Stock—Here’s Why Tesla, IREN, and Bloom Energy are the three Energy stocks to watch today, according to MarketBeat's stock screener tool. Energy stocks are shares of companies involved in producing, refining, transporting, or supplying energy — including oil and gas exploration and production, oilfield services, power utilities, and renewable energy firms. Investors buy them to gain exposure to movements in energy commodity prices and sector-specific factors, but should note they tend to be cyclical and sensitive to geopolitical, regulatory, and technological risks. These companies had the highest dollar trading volume of any Energy stocks within the last several days. Get Tesla alerts: