According to Wu Blockchain, Blockchair data shows that Zcash's shielded pool on-chain now holds over 5 million ZEC, accounting for more than 30% of the total supply. Since early October, it has seen a nearly vertical increase of over 1.2 million ZEC. In Zcash's shielded pool, funds can be directly transferred to other privacy addresses, and transaction details are not publicly recorded on the blockchain.