What is alt season in cryptocurrency?

Altcoin season, commonly referred to as "alt season," is a recurring market phenomenon in which alternative cryptocurrencies (altcoins) outperform Bitcoin in terms of price appreciation. During this period, Bitcoin’s dominance in the cryptocurrency market declines temporarily, and altcoins experience a surge in value, often leading to significant gains for traders and investors who have positioned themselves accordingly.

Bitcoin dominance, which measures Bitcoin’s market capitalisation as a percentage of the total crypto market, tends to rebound once an alt season concludes. Historically, these altcoin rallies occur in cycles, often following Bitcoin bull runs. However, many factors influence their timing, duration, and impact on the broader market.

In this article, we address key questions about alt seasons, including why they happen, when they typically occur, how traders can identify their onset, and the risks and rewards associated with them.

What is an alt season?

An alt season is a period in the crypto market cycle when altcoins, which include all cryptocurrencies other than Bitcoin, significantly outpace BTC in terms of price growth. These periods are often marked by a shift in investor sentiment, with capital flowing from Bitcoin into riskier, high-reward assets.

Historically, alt seasons have followed Bitcoin bull runs, as traders take profits from BTC and redeploy them into altcoins in search of higher returns. Some of the most well-known alt seasons occurred:

• December 2017 – January 2018: A broad altcoin rally followed Bitcoin’s surge to nearly US$20,000, with coins such as Ethereum and Ripple experiencing exponential gains.
• December 2020 – April 2021: This period saw Ethereum hitting new all-time highs, along with explosive growth in DeFi (Decentralised Finance) and NFT (Non-Fungible Token) projects.

These rallies have often been accompanied by increased retail participation, speculative trading, and mainstream media coverage of cryptocurrency trends.

Why do alt seasons happen?

Several factors contribute to the occurrence of an alt season, including market dynamics, investor psychology, and broader financial trends. Some of the key drivers include:

• Bitcoin consolidation or stability: Alt seasons often emerge after Bitcoin has completed a major rally and enters a period of consolidation. With Bitcoin’s price movement slowing, traders look for opportunities in altcoins, which are often more volatile and capable of delivering higher percentage gains.
• Increased risk appetite: When the overall market sentiment is bullish, investors become more willing to take on risk. Altcoins, especially smaller-cap projects, tend to attract speculative trading, leading to rapid price increases.
• Media hype and retail investor participation: As mainstream media coverage of cryptocurrencies increases, new investors enter the market, often looking for the “next big thing” beyond Bitcoin. This influx of capital into altcoins can amplify an alt season.
• Market cycles and rotational trading: Institutional and retail traders often rotate funds within the cryptocurrency market. After a Bitcoin rally, profits are taken and reallocated into promising altcoin projects, leading to a surge in their prices.
• Technological developments and new projects: The introduction of innovative blockchain projects, major protocol upgrades, or new token launches can drive interest in altcoins. DeFi, NFT ecosystems, and Layer-2 scaling solutions have all contributed to past altcoin seasons.
• Regulatory developments: Positive regulatory clarity or new financial instruments, such as the approval of Bitcoin or Ethereum ETFs, can contribute to a broader crypto market uptrend, benefiting altcoins alongside Bitcoin.

Key indicators of an approaching alt season

There is no official announcement when an alt season begins, but several market indicators can help identify its onset. Some of the most used signals include:

• Bitcoin dominance decline: A sustained drop in Bitcoin’s market dominance suggests that altcoins are capturing a larger share of investor interest and capital.
• Altcoin market capitalisation growth: When the total market capitalisation of altcoins rises sharply without a corresponding increase in Bitcoin’s value, it may indicate the start of an alt season.
• Altcoin outperformance over Bitcoin: If a majority of altcoins outperform Bitcoin over a 90-day period, it can signal a shift in market dynamics.
• Altcoin season index: Some traders use tools such as the Altcoin Season Index, which defines an alt season as a period when at least 75% of the top 50 altcoins perform better than Bitcoin over three months.

How long does alt season last?

Alt seasons vary in duration, but they typically last from a few weeks to several months. Factors influencing their length include:

• Market conditions: A strong and sustained bullish sentiment can extend an alt season, while negative news or market corrections can cut it short.
• Bitcoin price movements: If Bitcoin regains dominance or enters another bull run, funds may shift back into BTC, ending the altcoin rally.
• Regulatory and macroeconomic events: Government policies, interest rate decisions, or economic downturns can impact investor sentiment and influence the length of an alt season.

Historically, the end of an alt season is marked by capital flowing back into Bitcoin, with many altcoins experiencing sharp corrections.

What are the risks of alt season?

While alt seasons can present lucrative trading opportunities, they also come with significant risks:

• High volatility: Altcoins can experience rapid price swings, leading to both substantial gains and sharp losses.
• Market manipulation: Some smaller altcoins may be subject to pump-and-dump schemes, where prices are artificially inflated before crashing.
• Liquidity issues: Low-cap altcoins may have less trading volume, making it difficult to enter or exit positions without slippage.
• Regulatory uncertainty: Sudden regulatory changes can impact specific altcoins, leading to unexpected price declines.

Altcoin season are an exciting yet unpredictable aspect of the cryptocurrency market. Understanding the factors that drive alt seasons, recognising key indicators, and implementing sound risk management strategies can help traders navigate these market cycles effectively.

BTC Markets provides real-time data, analysis, and insights to help investors stay informed and make strategic decisions during market fluctuations. Whether you are a seasoned trader or a newcomer to the crypto space, staying ahead of trends is essential for capitalising on the next alt season.

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