Updated: 1/17/2026

Altcoin Season Index

27
Bitcoin Gaining

Bitcoin is outperforming most altcoins. Focus on BTC or wait for altcoin opportunities.

Bitcoin Season vs Altcoin Season

Bitcoin Season
Current

When most altcoins underperform Bitcoin. Money flows into BTC.

Characteristics:

  • • Index below 25
  • • BTC dominance rising
  • • Risk-off sentiment
  • • Often early bull market

Strategy:

  • • Accumulate Bitcoin
  • • Reduce weak altcoins
  • • Wait for rotation
Altcoin Season

When most altcoins outperform Bitcoin. Money flows into alts.

Characteristics:

  • • Index above 75
  • • BTC dominance falling
  • • Risk-on sentiment
  • • Often late bull market

Strategy:

  • • Rotate into quality alts
  • • Follow sector trends
  • • Take profits regularly

Understanding the Index Scale

0255075100
0-25
Bitcoin Season

Less than 25% of altcoins outperform BTC. Strong Bitcoin dominance.

25-50
Bitcoin Gaining

Bitcoin is performing better than most altcoins. Caution on alts.

Current
50-75
Altcoins Gaining

More than half of altcoins outperforming BTC. Momentum building.

75-100
Altcoin Season

75%+ of altcoins outperforming BTC. Full altcoin season!

Altcoin Season Trading Tips

When to Buy Alts
  • • Index rising from Bitcoin Season
  • • BTC consolidating after a rally
  • • New narrative/hype emerging
  • • Strong BTC as stable base
What to Buy
  • • Sector leaders (DeFi, AI, L2)
  • • Strong technical setups
  • • Coins with real utility
  • • High volume, low cap gems
When to Exit
  • • Index extremely high (90+)
  • • Everyone talking about alts
  • • BTC dominance bottoming
  • • Take profits on the way up

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Frequently Asked Questions

What is the Altcoin Season Index?

The Altcoin Season Index measures the performance of altcoins vs Bitcoin over a 90-day period. If 75% or more of the top 50 altcoins outperform Bitcoin, it's 'Altcoin Season'. If 25% or fewer outperform, it's 'Bitcoin Season'.

When is Altcoin Season?

Altcoin Season typically occurs during late bull markets when investors become more risk-seeking. After Bitcoin makes significant gains, money often rotates into altcoins seeking higher returns. The index value above 75 indicates Altcoin Season.

How to trade during Altcoin Season?

During Altcoin Season, consider increasing altcoin exposure, especially in sector leaders (DeFi, AI, Layer 2). Focus on coins with strong fundamentals and technical setups. Always maintain some Bitcoin as a base.

What causes Altcoin Season?

Altcoin Season is caused by: 1) Bitcoin consolidating after a rally, 2) Increased risk appetite among investors, 3) New narratives and hype around specific altcoin sectors, 4) Retail investor FOMO on 'cheap' altcoins.