Cathie Wood, CEO of Ark Investment Management, has purchased 41,906 shares of Tempus AI Inc. (TEM), a stock that is currently down 15% year-to-date. Wood's focus is on high-tech companies across artificial intelligence, blockchain, biomedical technology, and robotics, which she believes have great growth potential. However, their volatility has led to losses in bearish markets, such as in 2022 when the Ark Innovation ETF dropped more than 60%. The fund gained 35.5% last year, outperforming the S&P 500's return of 17.9%. Wood also dismissed the "AI bubble" talk, stating that the US economy is preparing for a rebound in 2026.