Serve Robotics (NASDAQ:SERV) investors were already nursing loss after disappointing quarterly financial results.

Another blow came days later when long0time Uber Technologies (NYSE:UBER) dumped its entire stake in the autonomous delivery robot company.

According to a regulatory filing on Friday, Uber disclosed that it sold the rest of its stake in Serve Robotics.

The ride hailing company had been selling off portions of its stake in recent years, as reported by TechCrunch.

Among the surprised is Serve Robotics.