Coinbase to Adjust Anthropic Pre-IPO Perpetual Contract Index

Nov. 14: Coinbase Assets posted on X that it plans to adjust the index basis for Anthropic pre-IPO perpetual contracts at 18:00 Beijing time on Nov. 16, changing from a valuation index based on 1 billion shares to a per-share price index based on 13.116 billion shares. Trading will be temporarily suspended during the adjustment, and all unfilled ANTH orders will be canceled; existing ANTH perpetual contract positions on Coinbase Markets will be migrated via zero-fee block trades to economically equivalent ANT perpetual contract positions. After the migration is completed, ANTH will be delisted and ANT will open for trading.