[Coinbase to Adjust Pre-IPO Anthropic Perpetual Contract Index] Coinbase Assets posted on its X platform that it plans to adjust the index benchmark for pre-IPO Anthropic perpetual contracts at 18:00 Beijing time on November 16th, changing it from a valuation index based on 1 billion shares to a price per share index based on 13.116 billion shares. Trading will be temporarily suspended during the adjustment period, and all outstanding ANTH orders will be cancelled. Existing ANTH perpetual contract positions on Coinbase Markets will be migrated to economically equivalent ANT perpetual contract positions via zero-fee block trades. After the migration is complete, ANTH will be delisted, and ANT will be available for trading.