Cathie Wood, chief of Ark Investment Management, often seizes the moment to buy her favorite stock when the prices fall. That’s what she did this week–she bought a stock that has plunged nearly 30% in the past five days.

Cathie Wood and Ark Invest moved to acquire Transfus AI (TEM, Financial) shares after its share price dropped by 1.5%. Wood's team reacted to Tempus AI's earnings report disappointment by purchasing the healthcare technology firm's shares at reduced values.

Cathie Wood had a quiet first day of trading for the final week of February. The co-founder, CEO, and ace stock picker for Ark Invest executed only four transactions across her family of growth-focused exchange-traded funds.

Cathie Wood and Ark Invest seized the opportunity on Tuesday to buy the dip on Tempus AI (NASDAQ:TEM) as the stock took a 15% hit. Undeterred by the downturn, Wood and her team swooped in, and snapped up over 400K shares of the healthcare tech firm,