Bitcoin and Ethereum ETFs experienced notable outflows on December 19, with Bitcoin seeing a reduction of $158.2 million and Ethereum losing $75.8 million. In contrast, XRP and Solana ETFs recorded inflows, with XRP gaining $13.21 million and Solana adding $3.5 million. Other cryptocurrencies like Dogecoin, Chainlink, Litecoin, and Hedera Hashgraph remained stable with no significant ETF flow changes.