Cathie Wood, head of Ark Investment Management, is known for making bold bets — but she’s not afraid to change course when the market proves her wrong. That’s what she did this week. She unloaded a tech stock that tumbled nearly 50% last year.

Cathie Wood bought shares of AMD, Toast, and Shopify on Tuesday. AMD hit a new 52-week low after posting mixed quarterly results last week. Toast shares have soared 108% over the past year, and the eatery tech specialist has a critical earnings report on the menu for next week.

Ark Invest, led by Cathie Wood, made significant trades on Monday. Among the most prominent was the sale of shares in Palantir Technologies, as the stock continued its upward trajectory following impressive financial results.