Tesla investors lost $12 billion after Musk tweet, jury is told

Tesla investors lost $12 billion over 10 days as a result of Elon Musk’s famous tweet in 2018 that he had “funding secured” to take the company private, a witness testified at a trial over the CEO’s liability.

Lawyers for Musk have said there are billions of dollars in damages at stake in the trial, now in its third week in San Francisco federal court, but until Tuesday an exact figure had been the subject of speculation.

The trial revolves around Musk’s controversial August 2018 Twitter posts that he was considering taking the electric-car maker private. Investors have called numerous witnesses, including a top Goldman Sachs executive, to make their case that the tweets triggered dramatic fluctuations in Tesla’s share price, causing their trading losses and the damages delineated at trial Tuesday.

Elon Musk.

The loss figure was presented to the jury on Tuesday by Michael Hartzmark, an expert witness from Forensic Economics, who testified about how he measured the impact of Musk’s tweets on the prices of Tesla securities.

Hartzmark didn’t address how much the plaintiffs are seeking in damages, but he told the jury that Musk’s tweets had “consequential harm” to investors.

“The tweets caused losses to investors” over the 10-day period, he said. He walked the jury through how the Tesla share price spiked in response to the initial announcement from Musk — and then declined sharply as doubts grew about the take-private plan.

“Uncertainty is the kryptonite of investors,” Hartzmark said. “As this went drip, drip, drip over time it would have a negative impact” on the share price.

Earlier the jurors heard from Steven Heston, a professor of finance at the University of Maryland. Another expert witness for the investors, Heston explained Tesla options for the jurors, telling them the company has one of the most active markets for puts and calls of any stock. He said that while individual investors buy options, they’re used mostly by institutional investors — mutual and pension funds and insurance companies.

Heston shared his research for what happened to Tesla options from Aug. 7, 2018, when Musk posted his tweets, over 10 days, as the proposed plan to take the company private fell apart. He noted an “abrupt movement” in options prices over the period and an “unprecedented” pattern in the volatility of long-term options prices.