Altcoin Season Index Explained: What Is Altseason and Why It Matters

If you’ve spent even a little time in crypto, you’ve probably heard people throw around phrases like “altseason is coming” or “we’re still in Bitcoin season.”

Let’s break it down!

The altcoins meaning is straightforward: any cryptocurrency that isn’t Bitcoin is considered an alt coin (short for “alternative coin”). That includes everything from Ethereum to smaller, lesser-known tokens.

Now here’s where things get interesting. The market doesn’t move randomly, it tends to follow cycles. And one of the most talked-about phases in those cycles is measured by something called the altseason index.

Understanding the Altcoin Season: What Does It Mean?

In simple terms, alt coin season (or altseason) is a period when altcoins start outperforming Bitcoin, sometimes massively. When Bitcoin dominates, most of the money flows into BTC, this is called Bitcoin season. When money starts rotating into altcoins, that’s altcoin season

The alt season index (or altseason index) is just a way to measure this shift. It tracks whether a large number of altcoins are beating Bitcoin over a certain period (usually 90 days).

Here’s the easiest way to understand the difference.

Bitcoin Season:

• BTC is the safest bet (relatively speaking)
• Investors move money into Bitcoin
• Altcoins grow slowly or even drop against BTC

Altcoin Season:

• Investors start chasing higher returns
• Money flows out of Bitcoin into altcoins
• Smaller coins can explode (sometimes 2x, 5x, even 10x+)

This rotation is a core pattern in crypto cycles and spotting it early is exactly why people watch the altseason index so closely.

2017 Bull Run (The First Massive Altseason)

Back in 2017, Bitcoin kicked off the bull run but then something wild happened.

According to data from CoinMarketCap, after BTC’s initial surge, capital flooded into altcoins. Coins like Ethereum and XRP massively outperformed Bitcoin for months.

• Ethereum went from ~$10 to over $1,000
• XRP saw exponential growth in a short time

Crypto analysts often refer to this as the classic altseason pattern after bitcoin pumps.

2021 Cycle (DeFi & Meme Coin Explosion)

Fast forward to 2021, and we saw a more “modern” version of altseason. Research and market reports from Glassnode and Messari showed a clear shift: once Bitcoin slowed down, altcoins took over again.

• Solana went from a few dollars to over $200
• Dogecoin exploded thanks to hype and social media
• DeFi tokens like Uniswap gained massive traction

What Is the Altcoin Season Index?

The altcoin season index is a metric that shows whether altcoins are outperforming Bitcoin over a specific period (usually the last 90 days). In other words, it answers the question: are we in altseason or not?

If you’re still thinking about what is altcoins, here’s a quick reminder:

Altcoins = every crypto asset that isn’t Bitcoin. That’s the basic alt coins meaning from major players like Ethereum to smaller niche tokens.

Who Created It?

The most widely referenced version of the index comes from Blockchain Center. They built it as a simple, visual way to track market rotation between Bitcoin and altcoins, something traders had been doing manually for years.

The index looks at the top 50 altcoins. It compares their performance to Bitcoin over the last 90 days, then it checks how many of them are doing better than BTC. If 75% or more of altcoins outperform Bitcoin, it’s altseason. If fewer than 25% outperform, it’s Bitcoin season.

Tip from Quotex:

You can use indicators like the Altcoin Season Index to time your portfolio rotation strategies.

How the Altcoin Season Index Is Calculated

Now let’s go one level deeper. What Metrics Are Used? The calculation is actually pretty straightforward. Performance of top 50 alt coins compared against Bitcoin over a fixed time window (typically 90 days).

That’s the entire logic behind alt season classification.

When the index starts climbing toward 75+, it often signals:

• Increasing risk appetite
• Capital rotation into smaller assets
• Potential for aggressive growth in altcoins

When it drops toward 25 or lower:

• The market is becoming more cautious
• Bitcoin is perceived safer inside the crypto

It’s one of the clearest ways to understand where the market’s attention is shifting right now.

What Triggers an Altcoin Season?

It’s usually a combination of several forces lining up at the same time.

1. Macro Trends & Liquidity

Altseason almost always needs one thing first: money entering the market. When global liquidity increases (low interest rates, more risk appetite), investors start looking beyond safe assets. In crypto, that means moving from Bitcoin into higher-risk, higher-reward assets.

That’s where the altcoin meaning becomes practical: altcoins are riskier than BTC but they also have way more upside during the right phase.

2. Bitcoin Dominance Starts Falling

This is one of the clearest signals. When Bitcoin dominance is high, market is cautious. Historically, this drop in dominance often happens right before or during altseason.

3. Crypto Narratives Take Over (DeFi, L2, Memecoins)

Altcoins usually follow trends (narratives).

Some big ones from recent cycles:

• DeFi (Decentralized Finance) — Uniswap, Aave
• Layer 2 scaling — Arbitrum, Optimism
• Memecoins — Dogecoin, Shiba Inu

When one of these sectors catches attention, altseason accelerates.

4. Market Psychology (FOMO Kicks In)

This part is underrated. Once traders see smaller coins doing 2x–5x, new investors rush in and existing investors take more risk.

Quotex insight:

Quotex’s market sentiment dashboard helps you track altcoin momentum in real time.

How to Use the Altcoin Season Index in Your Trading Strategy

Spotting Entry Points

You don’t want to jump in when everything is already pumped. Watch the altcoin season index moving up from the neutral zone and look for early strength in majors like Ethereum. This often signals the beginning of rotation, not the end.

The Rotation Strategy (Classic Playbook)

This is how capital typically flows: money enters Bitcoin, then moves to large caps (like ETH) and then flows into mid/small-cap altcoins

So instead of guessing, you follow the flow: BTC – ETH – Altcoins.

Timing Exits & Taking Profits

Altseason doesn’t last forever.

Warning signs:

• Index stays above 75 for too long
• Parabolic moves in random coins
• Everyone suddenly becomes a crypto expert

Start taking profits, reduce exposure to risky altcoins and rotate back into BTC or stable assets.

Combine It with Technical Analysis

The index alone isn’t enough, you need confirmation. Look for volume spikes, breakouts from resistance and strong trends across multiple alt coins.

Tip for execution:

On Quotex, you can combine the Altcoin Index with price alerts and volume spikes to plan your next move.

Altcoin Season Index vs. Other Market Indicators

The altcoin season index is powerful but it works best when you don’t use it alone. To really understand the market, you want to combine it with a few other key indicators.

Bitcoin Dominance

Shows how much of the total crypto market belongs to Bitcoin.

How to use with the index:

• If dominance is falling and the index is rising = strong altseason signal
• If they contradict each other = stay cautious

Crypto Fear & Greed Index

Provided by platforms like Alternative.me, this indicator measures market emotions.

How to combine:

Altseason + Extreme Greed = late stage (be careful)

Early altseason + neutral sentiment = better entry conditions

Total Value Locked (TVL)

TVL shows how much money is locked in DeFi protocols. You’ll find this data on platforms like DeFiLlama.

Rising TVL + rising altcoin season index = strong фундаментальный сигнал

When to Use Them Together

Early trend:

Index rising + BTC dominance falling + TVL growing

Mid altseason:

Index above 75 + strong narratives + rising greed

Late stage:

Index high + extreme greed + parabolic charts

Risks of Trading Based on Altcoin Season Index

When trading altcoins, beware of such things as:

• False Signals (Short-term pumps)
• Overheated Market (When the index is already high, many altcoins are overbought)
• Extreme Volatility (Altcoins are more volatile and less liquid than Bitcoin)

Where to Track the Altcoin Season Index

You don’t need to calculate anything manually, several platforms already track it for you. Here’s a quick comparison!

Quotex, for example, collects data from key indicators (including momentum and sentiment tools) into one interface, so you can quickly evaluate the market.

Conclusion

The altcoin season index is a simple way to understand where the money is flowing in the crypto market.

Here’s what really matters:

• Watch the shift from Bitcoin to altcoins
• Track when the index moves from neutral → toward 75+
• Confirm it with other signals: BTC dominance, volume, narratives

And don’t forget the basics. Understanding the altcoins meaning (everything outside Bitcoin) and what is alt coin in practice helps you see the bigger picture, not just chase random pumps.

Use platforms like Quotex to track the altcoin season index, monitor market sentiment, and build structured trading strategies instead of guessing your next move.

FAQ

What is the altcoins index?

The altcoins index (often called the altcoin season index) measures whether most altcoins are outperforming Bitcoin over a set period, usually 90 days. It helps traders understand if the market is in the Bitcoin season, altseason, or somewhere in between.

What are the top 5 altcoins?

There’s no fixed list, it changes with the market. But commonly, the largest altcoins by market cap include:

• Ethereum
• BNB
• Solana
• Cardano
• XRP

What is the value of 1 altcoin?

There’s no single price for 1 altcoin because altcoins are thousands of different cryptocurrencies.

Some cost less than $0.01. Others, like Ethereum, can be worth thousands of dollars. So the value depends entirely on the specific project.

What is total 3 in crypto?

“Total 3” is a market metric that shows the total market capitalization of all cryptocurrencies excluding Bitcoin and Ethereum.

Traders use it to track how the rest of the altcoin market is performing.

If Total 3 is growing, it usually means smaller altcoins are gaining strength, which often aligns with altseason.