Cathie Wood bought more than $20 million worth of Teladoc as stock tanked Thursday

Catherine Wood, chief executive officer of ARK Investment Management LLC, speaks during the Bitcoin 2022 conference in Miami, Florida, U.S., on Thursday, April 7, 2022.
Eva Marie Uzcategui | Bloomberg | Getty Images

Ark Invest's Cathie Wood doubled down on Teladoc even as shares of one of her favorites stocks dropped 40% on Thursday.