ARK Venture Fund holds a $69 million OpenAI stake, representing the largest exposure among major public funds to the ChatGPT maker. The position makes up between 5.26% and 5.41% of the fund’s portfolio, with total assets around $1.3 billion. SpaceX remains the largest holding at 7.54%, followed by OpenAI at 5.26% and Anthropic at 3.86%. ARK invested at least $250 million in OpenAI’s October 2024 funding round. In September 2026, the fund announced tokenization of its shares on Ethereum, allowing eligible US investors to purchase stakes using USDC.
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