Bitcoin's rally is losing a bit of its edge — and a handful of altcoins are stepping in to fill the gap. On September 23, 2026, BTC's 24-hour gain cooled sharply to just 0.8%, down from a 5.4% jump a day earlier, even as it continues to hold above $86,000. At the same time, the DeFi sector accelerated, with its market cap climbing 2.2% versus 0.6% growth the day before — a signal that capital is rotating out of pure BTC exposure and into altcoins and on-chain activity.
XRP, DOGE, BCH, and NEAR are among the names traders are watching most closely in this rotation:
Why it matters: When Bitcoin's own momentum slows but the total market cap keeps grinding higher, it usually means money is rotating into altcoins rather than leaving crypto altogether — exactly what today's data shows, with DeFi accelerating even as BTC's daily gain shrank. Bitcoin dominance remains high, so this isn't full-blown "altseason" yet, but selective outperformance in names like XRP, DOGE, BCH, and NEAR is often the earliest sign that one is starting to build.
A note on precision: Altcoin price swings can move by the hour. The figures above reflect the most recent verified data available at the time of writing; before publishing, it's worth pulling same-day percentage changes for XRP, DOGE, BCH, and NEAR directly from CoinGecko or CoinMarketCap so the numbers are current to the exact publish time.
Sources: CoinGabbar, CoinDesk Indices, The Crypto Basic, KuCoin Research, Decrypt/Pluang market feed
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