Binance Exchange and Head of Trading Shunyet Jan explained the calculation method for Binance's Anthropic-related perpetual contracts. This method updates the mark price every second based on executed trades, with a 1% per-second volatility cap and a fallback mechanism for slowing trade, aiming to prevent liquidations. Meanwhile, 21Shares issued an Anthropic synthetic ETP on October 13, offering investors synthetic exposure to the private company. The ETP's terms include recourse limited to the issuer, linked note terms, and additional financing, trading, and perpetual funding costs beyond the 1% annual fee, along with counterparty default risk.