<ul data-eligibleForWebStory="true">Crypto market gains momentum as 23% of altcoins outperform Bitcoin, signifying a potential shift in June 2025.Altcoin rallies often initiate in June annually since 2022, pointing towards a probable repeat in 2025.On-chain activity and funding patterns suggest a forthcoming breakout in altcoins this cycle.Analyst Alphractal emphasizes the importance of past market signals indicating a significant event in crypto.Altcoin Season Index highlights periods when altcoins surpass Bitcoin, leading to potential altcoin rallies.Two market configurations contribute to altcoin rallies, mainly when Bitcoin shows weakness post a rally or amidst declining prices.Bitcoin's recent performance easing off with 23% of altcoins now outperforming it.June is historically significant with past altcoin rallies initiating in this month since 2022.On-chain signals and increased activity suggest growing interest and strengthening altcoins.Funding trends indicate a fluctuation in investment flow, possibly correlating with crypto momentum.Despite market uncertainties, indicators point to a potential altcoin rally beginning in June.Investors and traders are advised to remain cautious and monitor market dynamics.Web3 startups witness a surge in Q1 2025 funding, followed by a decline in Q2, resembling patterns prior to the 2021 altcoin boom.June could mark the start of a long-awaited altcoin season, dependent on sustained trends and market behavior.