Closely followed investor Cathie Wood bought $4.7 million of Tesla (TSLA), more than 176,000 shares, during the automaker’s biggest rout in two years, Bloomberg reports.

Tesla stock plunged more than 12% after the company missed quarterly deliveries, in spite of discount incentives for customers.

Since Oct. 3, when Tesla started its losing streak, Wood, CEO and chief investment officer of ARK Investment Management, has bought more than 938,000 shares of the EV maker.

TSLA was up 0.80% as of 7:05 a.m. EST Wednesday in premarket trading.

Tesla stock fell 65% last year amid a myriad of concerns—rising interest rates, inflation dampening EV demand, competitors, ongoing supply chain disruption, and Tesla CEO Elon Musk’s preoccupation with Twitter, which he acquired in October for $44 billion and is attempting to make profitable.

More than $25 billion of Tesla shares were traded Tuesday, the first trading day of 2023. It was the biggest volume for any stock in the S&P 500 Index.