What Does Hyliion Holdings Corp.'s 19.3% Stock Drop Mean for Investors? The Law Offices of Howard G. Smith Outlines Securities Fraud Class Action Lead Plaintiff Deadline What Does Hyliion Holdings Corp.'s 19.3% Stock Drop Mean for Investors? The Law Offices of Howard G. Smith Outlines Securities Fraud Class Action Lead Plaintiff Deadline Law Offices of Howard G. Smith Oct 21, 2026, 13:00 ET Suit alleges Hyliion Holdings Corp. failed to disclose key facts to investors from May 12, 2026 through June 23, 2026; ...