Grayscale Names Q3 ’Altcoin Season’ as Alts Eclipse Bitcoin
Grayscale’s Q3 2025 report labels the period a ’special altcoin season’ as altcoins outpaced Bitcoin despite BTC’s record $124,000 high in August. Sector gains spanned Ethereum, AI tokens and smart contracts, bolstered by July’s stablecoin legislation in the US. Rising crypto treasuries on corporate balance sheets and surging centralized exchange volumes supported the rally.
However, Bitcoin returns still lagged gold and equities amid ongoing stablecoin outflows. Looking ahead, Grayscale expects this altcoin season to extend into Q4, driven by pending US market-structure laws and the SEC’s approval of new crypto ETF listing standards covering BTC, ETH, XRP, SOL and ADA.
Bullish
News of record sector gains and supportive regulatory developments is likely to boost trader confidence and fund inflows, driving a bullish altcoin market in both the short and long term. In the near term, stablecoin legislation and rising exchange volumes could fuel fresh rallies across smart-contract tokens and AI-based assets. Over the longer term, SEC approvals of new ETF rules and pending US market-structure laws should attract institutional capital, sustaining momentum beyond Q3. While Bitcoin may see moderate gains, this altcoin season’s tailwinds mark a broadly bullish outlook.