Woofun AI reports that RootData has launched the Stock Perpetual Contract Exchange Ranking, covering centralized and decentralized platforms offering stock derivatives. The system aggregates primary data directly from official APIs and public sources, bypassing third-party providers to ensure data originality and accuracy. The ranking tracks metrics including trading volume, open interest, liquidity, spreads, depth, trading costs, and contract coverage. RootData has opened its data submission channel for exchanges to provide official APIs and supplementary information.