Cathie Wood's Ark Invest sold another 77,561 shares of Coinbase on Thursday, worth $20.4 million, while also investing in OpenAI for the first time, the artificial intelligence company led by Worldcoin co-founder Sam Altman. According to the latest disclosures, Coinbase is the second largest holding in the ARKK ETF, with a weight of 9.7%, second only to Tesla's 9.8%. Coinbase is also the second largest holding in ARKW, with a weight of 9.9%, second only to the Ark Spot Bitcoin ETF (ARKB), accounting for 10.2% of the fund. (TheBlock)