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4 Signs the Altcoin Season Is Accelerating in September

The altcoin market capitalization is just a few proportion factors away from its all-time high. Many analysts imagine it will possibly attain a a lot larger stage in September.

Several causes point out that the altcoin season has entered its acceleration section, the place nearly any altcoin buy may carry revenue. What are these indicators? Below are the key observations and explanations.

1. Altcoin Trading Volume Share Surpasses ETH and Bitcoin

Analyst Maartunn just lately noticed that altcoin buying and selling quantity surged in September whereas BTC and ETH volumes declined. This uncommon sign confirms capital is flowing into altcoins.

Data from CryptoQuant additionally exhibits that in September, altcoin spot quantity share rose whereas ETH and BTC shares shrank. Specifically, altcoins accounted for 37.2%, whereas ETH and BTC made up 31.8% and 30.9%, respectively.

BTC, ETH, and Altcoin Trading Volume Proportion. Source: CryptoQuant

This shift usually indicators liquidity rotation from Bitcoin and large-cap cash to mid- and small-caps, confirming the acceleration of altseason.

“Altseason Hints? Ethereum spot quantity is down over the previous week, whereas altcoin quantity is up,” Maartunn said.

The decline in ETH’s quantity share matches the well-known capital rotation cycle. Capital sometimes begins with Bitcoin’s rally, flows into ETH, and accelerates right into a broad altcoin surge.

Maartunn added that 8 out of 10 indicators in CryptoQuant’s bull/bear rating are actually bearish for Bitcoin.

Bitcoin Dominance, Bitcoin Price, and Altcoin Market Cap (TOTAL3). Source: TradingView.

Meanwhile, Bitcoin dominance has dropped alongside BTC’s worth in September. With the altcoin market cap rising, this reinforces the view that capital favors altcoins.

2. Altcoin Season Index Hits 2025 High

The second signal is the Altcoin Season Index (ASI) from Blockchain Center, which hit 80 factors, its highest stage in 2025. This confirms the market is in altcoin season.

ASI measures the efficiency of the high 50 cash (excluding stablecoins) in opposition to Bitcoin over the previous 90 days. With 75% of cash outperforming BTC, the index exhibits that altcoins dominate.

Altcoin Season Index. Source: Blockchain Center

During the acceleration section, ASI can climb to 100 earlier than the cycle ends, much like earlier peaks. This displays a robust desire for high-risk altcoin investments.

Analyst Lau famous that the acceleration interval of altcoin season can final from 17 to 117 days.

“Historically, the common period of alt season is 17 days, with a report of 117 days. Now we simply have to attend and see how lengthy the new cycle will final,” Lau said.

3. TOTAL3 Forms a Massive Bullish Triangle

The third signal comes from technical evaluation. TOTAL3 (the whole altcoin market cap excluding BTC and ETH) has been forming a large bullish triangle over the previous 4 years and is now on the verge of a breakout.

Charts present that TOTAL3 is testing its all-time month-to-month highs, with rising quantity and worth urgent resistance. A breakout would formally mark a robust acceleration of altseason, much like 2019–2021 cycles.

Simon Dedic, founding father of MoonrockCapital, called this the most essential structural sign proper now.

Altcoin Market Cap (TOTAL3). Source: Tradingview/Simon Dedic

“Imagine calling for the high whereas TOTAL3 is on the verge of breaking out of a 4-year wedge, being on monitor for the highest month-to-month shut in crypto historical past,” Simon Dedic said.

If TOTAL3 breaks above $1.16 trillion to set new highs, it is going to enhance investor confidence in altcoins. With no historic resistance ranges to reference, the rally’s ceiling will rely fully on retail traders’ FOMO momentum.

4. Exchanges Like Upbit, Coinbase, and Bithumb Ramp Up Listings

Rising liquidity in altcoins has fueled a wave of latest change listings in September.

  • Upbit has added nearly one token per day (LINEA, PUMP, HOLO, OPEN, WLD, FLOCK, RED) to keep up its 50.6% market share in opposition to Bithumb (46%).
  • Bithumb listed EUL, WLFI, LINEA, and PUMP.
  • Coinbase listed KMNO, DOLO, LAYER, SPX, AWE, and WLFI.

These listings improve altcoin liquidity, appeal to hypothesis, and improve buying and selling quantity. The suggestions loop between itemizing information and rising volumes accelerates the altcoin season even further.

The submit 4 Signs the Altcoin Season Is Accelerating in September appeared first on BeInCrypto.

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