Altcoin Season Index Drops to Lowest Point in Two Years: Here’s What History Tells Us

The Altcoin Season Index dropped to 13 this June, its lowest point in two years, signaling that Bitcoin continues to significantly outperform the vast majority of altcoins. The decline is part of a recurring mid-year seasonal pattern that has historically seen a shift in market dominance toward Bitcoin.

The data from the index, which measures the performance of the top 50 altcoins against Bitcoin, reinforces the current market sentiment of caution and a “flight to quality” within the digital asset space.

The Altcoin Season Index, by BlockchainCenter, measures the performance of the top 50 altcoins against Bitcoin over a 90-day window. A score below 25 indicates that fewer than 25% of altcoins are outperforming Bitcoin during that period, an indicator that it is “Bitcoin Season.”

As of this month, the index stands at just 12, deep within Bitcoin Season territory. Traders often interpret a low Altcoin Season Index as a signal that Bitcoin attracts more investor interest and liquidity. This reflects a strong shift in capital toward Bitcoin, with most altcoins underperforming.

Further analysis of recent performance data confirms that most top cryptocurrencies have delivered negative returns over the past 90 days. Bitcoin, by contrast, posted modest gains during the same timeframe.

For context, Bitcoin has gained approximately 9.01%, rising from $93,433 on April 24 to $101,853 as of this press time. During this time, Bitcoin even established a new all-time high at $112,000 while most altcoins remain below their peaks.

Only a few altcoins showed significant outperformance. Some, like ENA, ETHFI, and STRK, have dropped by over 40%. This imbalance reinforces the Index reading and suggests investor confidence is consolidating around Bitcoin as the more resilient asset in the current environment.

Meanwhile, the latest data on Altcoin Index points to a recognizable market pattern: June has historically been a weak month for altcoins.

Data shows that this indicator has reached or approached similar lows in June of previous years, specifically in 2019, 2020, 2022, 2023, and 2024. In 2021, when altcoin sentiment was strong, the lowest reading occurred in July.

Analyst Michael van de Poppe further this seasonal pattern. He noted that each mid-year period since 2019 has featured a decisive swing in favor of Bitcoin. Late-year altcoin recoveries have often followed these dips, suggesting a major rebound could be around the corner.