What Is Altcoin in Crypto?

Altcoin is crypto shorthand for any coin or token that isn't Bitcoin. The term covers everything from major L1 coins (ETH, SOL, ADA) to memecoins (PEPE, WIF) to long-tail protocol tokens. "Altseason" is the period in a market cycle when altcoins outperform Bitcoin — usually after BTC has rallied and capital rotates into higher-beta plays.

Also known as: alt, alt coin, altcoins

Ask Stingray anything about Altcoin

Altcoin categories

A rough taxonomy of the altcoin universe:

  • Major L1 coinsETH, SOL, BNB, ADA, AVAX, DOT, ATOM. Have their own blockchains, substantial developer ecosystems, and long track records.
  • DeFi blue-chips — UNI, AAVE, MKR, LDO, CRV, SNX, GMX. Governance tokens for major DeFi protocols.
  • Infrastructure tokens — LINK, ARB, OP, MATIC, IMX. Layer-2s, oracles, scaling solutions.
  • MemecoinsDOGE, SHIB, PEPE, WIF, BONK, TRUMP. Community-driven, speculative, often high-volatility.
  • AI and compute — TAO, RNDR, FET, AKT, IO. Positioned at the AI-crypto intersection.
  • Gaming and NFT — AXS, GALA, IMX, APE, SAND. Highly cyclical.
  • Privacy coins — XMR, ZEC, DASH. Small but persistent market presence.
  • Small-cap long tail — thousands of tokens with market caps under $100M.

Altseason dynamics

The classic crypto cycle pattern:

  1. Bitcoin leads a rally (bull cycle starts).
  2. Profits rotate into ETH once BTC dominance peaks.
  3. ETH rallies pulls in DeFi blue-chips and major L1 coins.
  4. Capital flows down the cap stack into small-caps and memecoins.
  5. “Altseason” peaks with speculative small-caps pumping 10-100x on weekly timeframes.
  6. Rotation reverses when BTC dominance bottoms and profit-taking flows back to BTC.

This pattern has repeated in every Bitcoin cycle since 2013, though the specific timing and magnitude vary. Not all altcoins participate — the pattern favors recent narrative leaders and tokens with active communities.

Risks and considerations

Altcoins as a class underperform BTC over long horizons despite higher-beta returns during altseasons. Why:

  • Survivorship bias — looking back at “altcoin winners” cherry-picks the survivors. The median altcoin from any given year is down 90%+ or effectively dead.
  • Token-unlock dilution — many alts launch with small circulating supply and large team/investor vesting schedules. Unlocks over years dilute holders.
  • Narrative decay — altcoins that drove a previous cycle (ICO tokens from 2017, DeFi summer leaders from 2020) often underperform in subsequent cycles as attention rotates.

For altcoin traders, the playbook is: rotate actively, take profits on outsized moves, and avoid marrying a position. For long-term holders, concentration in BTC + ETH + 1-2 high-conviction alts has historically outperformed diffuse altcoin exposure.

Related terms