Ethereum and altcoin whale activity is the leading indicators of the bull market

At the end of 2025, the activity of Ethereum and altcoin whales heralds the maturity of the bull market, with capital shifting from Bitcoin to ETH and high-growth altcoins. A Bitcoin whale converted $217 million worth of BTC into ETH, while Ethereum's futures open contract soared from $18 billion to $62 billion, with ETF inflows reaching $4 billion in August. XRP Whale added 300 million tokens, and as Bitcoin’s dominance declined, altcoin gains surged, mainly due to institutional demand, regulatory transparency and ETF approval.