Cathie Wood’s ARK Investment Management disclosed the purchase of 115,380 Tesla shares on 16 July, adding roughly $35 million to its holdings in the electric-vehicle maker at current market prices. The latest trade lifts ARK’s Tesla buying to more than $53 million over the past several days and to nearly $100 million since the start of July, underscoring Wood’s continued conviction in the company’s growth prospects after a volatile stretch for the stock. ARK also picked up about 3,000 shares of Nvidia on the same trading day, extending a pattern of incremental additions to the chip designer that underpins many artificial-intelligence applications.