Update
Binance requires full USDC reserves for stock put sellers under new FAQ
Binance's new seller FAQ for its stock options requires put sellers to hold the full share‑purchase amount in USDC in the Funding Account. The premium received is credited separately and does not reduce the reserved collateral. The reserve is locked when the sell order is placed, cannot be used for other orders or withdrawals, and is released only if the order is cancelled or expires unfilled. The FAQ also states that early assignment may occur overnight and sellers cannot control the buyer’s exercise decision. Despite the new FAQ, the linked September options terms still describe long‑only trading and exclude US persons and certain jurisdictions.