According to Michaël van de Poppe on X (Oct 15, 2025), ETH/BTC has only just begun its move, noting a first uptick similar to 2019 and indicating he expects significantly more upside in the ratio (source: Michaël van de Poppe on X, Oct 15, 2025). The post does not include specific price levels, targets, or timeframe for ETH/BTC, focusing solely on the directional view (source: Michaël van de Poppe on X, Oct 15, 2025).