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A brief history of Bitcoin bubbles

It’s been a breakout year for Bitcoin. In 2020 a wave of interest from mainstream investors and institutions helped push the price of the virtual currency from $7,200 in January to above $29,000 on December 31 (and then on past $32,700 by early January 2021). But the innovative digital asset, maintained by a decentralized swarm of so-called miners, has a long history of volatility. Most observers expect some retrenchment of that rally sooner or later.

For insight into why (or maybe when) a slump is likely, it’s worth looking back at Bitcoin’s many “bubble” periods: stretches when the price increased dramatically in a short amount of time, then fell, in most cases, even more sharply. “Bubble,” of course, has negative connotations, implying popular delusions and the madness of crowds. But there’s a growing understanding that financial bubbles can also be generated by temporary overoptimism about real innovation that can still pay off in the long run. Examples of this include the British Railway Mania of the 1840s and the 1999 Dot-com bubble.

Supporters see Bitcoin’s history of volatility as just a matter of watching the world catch up, in fits and starts, with an inevitable future. Ten years of steady growth seems to have vindicated that view—at least for now. But the growing pains can be truly savage.

Below, a trip down Bitcoin’s memory lane.

Caveat: Many of the Bitcoin marketplaces (such as Mt.Gox) that established the historical prices cited in the following text no longer exist. Even at the time, it would have been hard to identify a single price in the very small, relatively illiquid market. For simplicity and consistency, this article primarily relies on 99bitcoins.com for prices from 2009 to 2012 and CoinGecko for prices from 2013 to the present.

Feb. 2011: The Great Slashdotting/Dollar Parity Day

The Peak: $1.06 (Feb. 14, 2011)

The Bottom: $0.67 (April 5, 2011)

The Bitcoin bull run that peaked in February 2011 was arguably the cryptocurrency’s first bubble, and tremendously significant for its evolution. It began as early as July 2010, when Bitcoin—then worth just pennies per coin—was first mentioned on Slashdot, a news aggregator popular with die-hard techies. That post first brought important developers including Jeff Garzik and Jed McCaleb to the project. Heightened interest then drove the price of a Bitcoin to one dollar on Feb. 10, 2011. That day became known as Dollar Parity Day, and triggered a second Slashdot post that brought further attention.

That basic cycle is still a major dynamic of the Bitcoin market: real technology or infrastructure advances drive the price higher, then the price itself generates further, less sustainable price growth.