On Friday, one of the ARK Invest exchange-traded funds, which ETF star Cathie Wood manages, made a significant investment. This fund purchased more than 300,000 shares of UiPath Inc. (NYSE: PATH), a robotics software business, as the price of this exchange-traded fund fell by more than one percent on Friday. It should be noted that this fund has had a significant decline during the past year.

UiPath stock was acquired by the ARK Innovation ETF (NYSEARCA: ARKK), which purchased 308,263 shares. This purchase would have been worth around $13.6 million if it had been completed at Friday's closing price. Although this represents a small portion of the total holdings, every little bit helps. The fund has lost 22 percent of its value in the last year.