Core Viewpoint - Hyliion Holdings has significantly reduced its full-year revenue guidance, leading to a sharp decline in its stock price, which fell approximately 13.5% following the announcement [1][5]. Group 1: Company Overview - Hyliion was originally established to develop hybrid-electric systems for heavy trucks and is now focused on launching a multifuel electric generator named Karno, which utilizes a flameless oxidation system to generate electricity from various fuels with minimal emissions [2][3]. - The first Karno power module has successfully met key testing benchmarks and is scheduled for a broader market launch in 2026 [3]. Group 2: Financial Performance - In the third quarter, Hyliion reported revenue of approximately $760,000, all derived from a contract with the U.S. Navy, which is utilizing Karno modules for an autonomous naval vessel under development [4]. - The company has revised its full-year revenue expectation to about $4 million, solely from the Navy contract, a decrease from the previous guidance of $5 million to $10 million [5][8]. - Hyliion anticipates recognizing revenue related to the Karno system starting next year and reported having $164.7 million in cash at the end of the quarter, sufficient to support operations until the commercial launch of Karno [6].