According to Ark Invest's daily trading information, Cathie Wood's Ark Innovation ETF (ARKK) sold 57,819 shares of Tempus AI (TEM) on August 25. Tempus AI is a healthcare technology company that provides AI-powered diagnostic tools. The stock surged nearly 30% in a few days, becoming the second-largest holding in the Ark Innovation ETF. This sale is considered Cathie Wood's profit-taking after a significant increase in the stock price.