Total AVAX staked, which refers to the total amount of AVAX securing the network, is currently at 226MM AVAX representing 54% of total supply, which is 422MM AVAX. There are 326MM AVAX in circulation and 96MM locked supply.
NOTE: Total supply (422MM) = circulating supply (326MM) + locked supply (96MM). Locked supply is owned by individuals and entities who were early token holders in Avalanche and committed to lock-up periods governed by the protocol.
Source: Avalanche, Coinmarketcap. Data as of March 2023.