Bubble

In crypto, a bubble forms when buying is driven less by an asset's underlying utility or adoption and more by the expectation that someone else will pay an even higher price later. That self-reinforcing loop, rising prices attracting more buyers, which pushes prices higher still, can detach valuations from anything resembling fundamentals until confidence breaks and the unwind becomes just as fast as the climb.

Crypto bubbles tend to follow a recognizable arc: an early phase where genuine innovation draws in informed buyers, a hype phase where media coverage and social media narratives pull in retail traders chasing quick gains, a blow-off top where prices become disconnected from any reasonable valuation, and a crash triggered by profit-taking, bad news, or a single high-profile failure that shatters sentiment. Leverage tends to amplify both stages: borrowed money accelerates the rally, then forced liquidations accelerate the collapse.

Two episodes are widely cited as textbook crypto bubbles. In 2017, Bitcoin climbed from roughly $1,000 to almost $20,000 while thousands of ICOs raised billions of dollars for projects with little more than a whitepaper; most of those tokens later lost the majority of their value. In 2021, the total crypto market briefly exceeded $3 trillion alongside a speculative surge in NFTs and "DeFi summer" tokens, before a 2022 downturn, worsened by the TerraUSD/Luna collapse and the FTX exchange failure, wiped out most of the gains.

Because bubbles are only obvious in hindsight, many analysts treat sharp, hype-driven rallies with skepticism rather than trying to call the exact top, and pair that skepticism with position sizing and risk management aimed at surviving the eventual correction.