That's exactly what she's doing with Tempus AI (TEM) after the healthcare technology stock tumbled 14% over the past week. In 2025, the flagship Ark Innovation ETF gained 35.49%, far outpacing the S&P 500's return of 17.88% in the same period. Wood gained a reputation after the Ark Innovation ETF delivered a 153% return in 2020. But her style also brings painful losses in bearish markets, as seen in 2022, when the Ark Innovation ETF tumbled more than 60%. From 2014 to 2024, the Ark Innovation ETF wiped out $7 billion in investor wealth, according to a March 2025 analysis by Morningstar's analyst Amy Arnott.