Hopes for a broad altcoin rally in 2026 are rising as investors look beyond Bitcoin. Macroeconomic data is showing improvement, but key on-chain indicators suggest the conditions for a full-fledged ‘altseason’ are not yet in place.
Investors are beginning to look beyond Bitcoin, raising hopes for an altcoin season in 2026. Expectations are rising, but the conditions needed for a full altcoin rally are not firmly in place yet.
The latest ISM Manufacturing PMI came in at 52.6%, its highest reading in nearly 40 months. This pushed U.S. manufacturing back into expansion territory.
Past altcoin rallies have tended to follow periods when ISM moved decisively higher. In both 2017 and 2021, altseasons took shape only after PMI readings climbed above the 55 mark.
Ethereum [ETH], often seen as a harbinger of altseason, has closed in the red in 12 of the last 15 months. A monthly returns chart shows uneven gains with frequent drawdowns across 2024 and into early 2026.
Sustained altseasons have almost always followed a clear and consistent uptrend in Ethereum. Even during brief comebacks, follow-through has been limited.
Market data currently shows a lack of capital rotation into altcoins. CoinGlass’ Altcoin Season Index was at 39 at the time of writing, below the level that usually indicates a rotation away from Bitcoin.
At the same time, BTC dominance was close to 60% on the daily chart. Altseasons usually started with a clear decline in BTC dominance, with investors moving down the risk curve.
For now, that shift has not yet happened. While altseason expectations are beginning to fire up, they may very well be premature.
