CLNE vs CSTL Comparison

Clean Energy Fuels Corp is a natural gas marketer and retailer operating in the United States and Canada. The company supplies compressed natural gas, liquefied natural gas, and renewable natural gas as an alternative fuel for vehicles. The majority of revenue is generated within the U.S. and mostly consists of compressed natural gas. The company operates by purchasing natural gas from local utilities; compressing, cooling, or liquefying it at company-owned plants; and selling natural gas products through company-owned or customer-owned fueling stations. The company also builds, operates, and maintains natural gas fueling stations for customers. The company's target markets include heavy-duty trucking, airports, public transit, institutional energy users, and government fleets.

Castle Biosciences Inc is a commercial-stage dermatological cancer company. It is focused on providing physicians and their patients with personalized, clinically actionable genomic information to make more accurate treatment decisions. The product portfolio of the company includes Cutaneous Melanoma, DecisionDx-Melanoma, DecisionDx-CMSeq, and DecisionDx-PRAME, among others. The company's test portfolio consists of test offerings to aid clinicians in the diagnosis and treatment of cancers or precancerous diagnoses in the fields of dermatology, gastroenterology, and ophthalmology and a pharmacogenomics ("PGx") test to guide optimal drug treatment for patients diagnosed with depression, anxiety, and other mental health conditions.