Why Altcoin Season Might Be Gearing Up for an Explosive Run in Q4

Altcoin season expectations for Q3 2025 fell short, with only a handful of cryptocurrencies posting notable gains. A bearish turn in late September further dampened momentum. Yet, as the final quarter approaches, renewed Optimism surrounds altcoins, fueled by historical patterns suggesting a potential explosive rally.

Market cycles often hinge on rotational dynamics, and altcoin seasons typically signal the latter half of a bull run. Current conditions mirror the 2017 rally, where a brief decline in altcoin dominance preceded a sharp breakout. TradingView charts reveal a similar trajectory unfolding now, with altcoin dominance teetering on the edge of a decisive upward move.

Last week’s dip in the total altcoin market cap to $1.49 trillion marked a critical support retest—a level that has historically acted as a springboard for rallies. This technical alignment, coupled with cyclical trends, suggests Q4 could deliver the long-awaited altcoin surge.