Why Lemonade Stock Jumped 17% Today

Lemonade's (NYSE: LMND) stock chart took a sweet turn on Thursday morning, rising to a 4-year peak after a morning-session jump of 17%. The top gain arrived just before noon ET. The jump was inspired by a relatively recent rumor becoming a business reality: Lemonade launched a deeply discounted insurance program for Tesla (NASDAQ: TSLA) drivers who use their cars' full self-driving (FSD) features.

Lemonade's Tesla insurance idea started as a tweet

The story started in October 2025. Posting on the social platform X (formerly known as Twitter), Lemonade CEO Shai Wininger announced the integration of Tesla's in-car data with Lemonade's drive-tracking systems. The direct integration will give Lemonade "richer and more accurate driving data" than the plugin devices that Lemonade and other insurance companies use for drive-tracking today.

The next day, Wininger made a bolder offer.

"If @elonmusk is game, we'd be happy to explore insuring Tesla FSD miles for (almost) free," he wrote. Investors shrugged, and Lemonade's stock fell 8% over those two days.

The idea simmered quietly over the next three months. Lemonade didn't mention FSD discounts in November's Q3 earnings call, the company's official blog focused on Lemonade's charitable giving instead, and the Tesla-specific discount looked like a theoretical thought experiment.

Last night, the academic idea turned into a real insurance plan. Lemonade launched an Autonomous Car Insurance plan, based on its mileage-based car insurance but with a 50% lower rate per mile when the autopilot is on.

The plan will roll out slowly, starting in Arizona on Jan. 26 and Oregon in February. Lemonade car insurance is only available in 10 states so far, so the limited release of FSD discounts is no surprise. The company has many regulatory hills to climb.

But investors are eating up the news, judging by this morning's dramatic stock price gains.

Image source: Getty Images.

The bet on self-driving safety starts now

In the long run, Lemonade plans to expand its FSD rebates to more states and eventually to other self-driving vehicles, too. Tesla is a leader in the FSD space so far, so it makes sense to start with the most advanced self-driving solution on the market.

Critics worry that self-driving cars might not live up to the safety hype, and it's a real risk. If Tesla's autopilot can't deliver on its promises of fewer accidents, Lemonade could be in for a world of hurt and lawsuits. Theory-based safety claims may fall apart in the real world.

If you're buying Lemonade stock based on the FSD news, you're betting that self-driving cars really are safer, even in this early stage. With artificial intelligence (AI) underwriting and claim settlement tied directly to the self-driving cars' data collection systems, Lemonade seems perfectly poised to make this jump.

It's either an expensive mistake or a stroke of genius. Time will tell, though I'm happy to be a Lemonade shareholder right now.

Anders Bylund has positions in Lemonade. The Motley Fool has positions in and recommends Lemonade and Tesla. The Motley Fool has a disclosure policy.