Volo says they have frozen or recovered all but around $60,000. They have also said they are "prepared to absorb this loss", rather than passing losses along to their users.
Volo Protocol exploited for $3.5 million, most recovered
The Sui-based Volo Protocol defi yield platform was exploited for around $3.5 million after an attacker targeted three vaults holding wBTC, XAUm (a tokenized gold asset), and the USDC stablecoin.