By Michael FawnOn September 28, 2026, altcoin spot trading volume surged to nearly four times that of Bitcoin, hitting its highest ratio since September 2025. This significant shift has officially ushered in an “altcoin season” as of mid-September, according to the Altcoin Season Index. Yet, despite the clear market enthusiasm, analysts are questioning how long this momentum can last amidst rising altcoin sell-off pressures.The renewed appetite for altcoins follows Bitcoin’s ro