From June 2 to Aug. 18, Ethereum supply held on exchanges fell from about 7.70 million to 6.54 million, a decline of roughly 1.15 million ETH, or about 15%. Over the same period, Bitcoin exchange balances rose by about 1.8%. U.S. spot Ethereum ETFs posted net inflows of $189.15 million on Aug. 19, as ETH jumped nearly 20% in a day to break above $2,300.