Robinhood has minted 2,309 OpenAI equity tokens on the Arbitrum network, as revealed by CEO Vlad Tenev. The on-chain transaction data indicates that Robinhood has deployed a total of 213 tokens on Arbitrum, potentially as part of testing operations. The transactions were executed at a minimal cost, totaling just 0.00233 ETH (approximately $5), with an average transaction cost of $0.03.