Why Did Tesla Stock Fall Today?

Tesla (NASDAQ: TSLA) shares fell 6% on Friday, Sept. 4, 2026, after its Cybercab launch event failed to impress investors and federal regulators opened a safety audit. CEO Elon Musk was absent from the invite-only event, which offered no details on pricing, production timeline, or regulatory approvals, leaving investors with critical questions unanswered.

Why it matters: The NHTSA separately opened an audit into how Tesla self-certified the Cybercab and bypassed standard safety requirements like steering wheels, pedals, and mirrors.