Ark Invest sold 77,561 shares of Coinbase stock worth $20.4 million on Thursday, and also made its first investment in OpenAI. According to the latest disclosed information, 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 Ark's physical bitcoin ETF (ARKB), which accounts for 10.2% of the fund.

#etf