The investment return comparison website created by Da Chengzi is quite useful. Binance USDC has a maximum limit of 300,000 USDT. However, note that there's a condition for the extra returns on Binance USDC: If your USDC is borrowed as collateral, you won't receive any extra returns. (I know that the first reaction of those who hoard coins is this arbitrage, and so did I, so I checked the details first.) Therefore, if you want to arbitrage, you can only borrow USDC with one account, and then deposit it into another account with VIP access :)