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Understanding the 2017 and 2021 crypto bull markets

A wave of nostalgia has swept over crypto enthusiasts as they discuss the explosive bull markets of 2017 and 2021. With current prices stagnant, many wonder if history will repeat itself. Traders reflect on the past and its implications for today’s market.

By

Sofia Kim

Oct 17, 2025, 11:10 PM

Edited By

Olivia Brown

3 minutes to read

An illustration showing upward price graphs with cryptocurrency symbols, representing the 2017 and 2021 bull markets.
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The 2017 Awakening: A Shift in Perception

The bull run in 2017 astounded many.

"2017 caught everyone off guard. Most people did not imagine BTC going to $20,000 ever."

This massive surge opened doors for countless individuals, exposing them to crypto’s vast potential.

During this time, the lure of Initial Coin Offerings (ICOs) led many to dream big.

  • Many coins soared, some reaching heights of 1000x returns.

  • However, many projects vanished just as fast, leaving behind little more than an empty promise.

It was a wild ride where risk and reward danced dangerously close.

The 2021 Surge: Anticipated Yet Unsettling

Fast forward to 2021, a different playing field emerged. Investors had learned from past experiences.

"In 2021, we knew it was coming. It was only a matter of time," a trader stated.

Bitcoin’s price hit around $55,000, only to slide back to about $30,000. This volatility sparked fears, yet the underlying sentiment was different.

  • Traders cashed in their Bitcoin profits and funneled funds into altcoins, pushing many to sky-high valuations.

  • Memecoins made waves, exemplified by the meteoric rise of Dogecoin.

This fluctuation showcased a market still hungry for profit, yet trembling with uncertainty.

Current Market Sentiment: A Cautious Approach

As of late 2025, the crypto scene seems sluggish, with many altcoins lingering at all-time lows.

"We need an infusion of capital to stir the Alt Market," one user noted, reflecting current frustrations.

Economic instability, ongoing geopolitical tensions, and a new government narrative complicate matters further.

  • Many believe that liquidity must return through a Bitcoin sell-off to invigorate altcoins.

  • Sentiments of caution prevail as veterans reminisce about past cycles.

Current traders are focused on gradual accumulation, waiting patiently for the right moment to strike.

Key Takeaways

  • πŸš€ "In 2017, you can get a 1000x from ICOs craze. In 2021, 100-400x from IEOs, memes."

  • πŸ“‰ Current altcoins show potential for a resurgence but need strong capital infusion.

  • πŸ” "Don't get excited, don't get scared, just wait."

With institutional players and media influencing trends, the crypto environment remains a complex battleground. Will the lessons from past cycles guide today’s traders, or will history repeat itself in unexpected ways?

Where to Next for Crypto?

Looking ahead, there’s a solid chance that the crypto market might witness a resurgence if certain factors align. Experts estimate around a 60% probability that a significant influx of capital will emerge following a Bitcoin sell-off, potentially catalyzing altcoin rallies. Additionally, if institutions begin to invest again in late 2025, it could drive prices up and restore confidence among traders. Keeping a close eye on economic cues and government policies could provide critical insights into future market movements as established patterns suggest that recovery usually follows periods of stagnation.

A Historical Echo

In the world of literature, the rise and drop of crypto can be likened to the rollercoaster career of a seasonally popular playwright. T.S. Eliot, despite early struggles, faced personal fluctuating fortunes that mirrored his works' changing relevance with the times. Just as Eliot's revision of themes led to new interpretations, today's traders must learn to adapt swiftly to evolving market narratives. As past performances don’t guarantee future results, there’s no denying the cyclical nature of trends; thus, those who contextualize today’s market dynamics with historical shifts may find invaluable lessons amidst the chaos.