Bitcoin plunged below $11K for a while, down 40%+ from record high of ~$19.8K at the start of the week, amid a crash in all major cryptocurrencies
- Bitcoin plunges more than 40 percent from its all-time high reached Sunday, according to Coinbase. — Stocks that have soared dramatically …
Context & Ripple Effects
Bitcoin had set its all-time high near ~$19.8K on Coinbase only days before this report; by Friday it had briefly traded below $11,000, a drawdown of more than 40% in roughly one week. The selloff was market-wide, with all major cryptocurrencies falling together rather than Bitcoin alone.
The move extended an intra-week slide already tracked at 44% from the peak in the prior day's coverage, and it did not mark the bottom: within a month, Bitcoin was down another 25%+ and briefly below $10,000, with Ethereum off as much as 30% and Ripple down 40% at one point in the January 2018 leg down. Coinbase is the price reference throughout, making its quotes the public scoreboard for the correction.
First-order effects
- Retail holders who bought near the Sunday peak saw more than 40% of their position's value erased within the week, with Coinbase serving as the venue where the sub-$11K prints occurred.
Second-order effects
- Because every major cryptocurrency fell simultaneously, the crash undermined the diversification pitch across coins — capital fleeing Bitcoin took Ethereum and Ripple down with it rather than rotating between them.
Third-order effects
- Repeated correlated selloffs concentrated attention on exchange infrastructure itself: when prices plunge, venues like Coinbase become both the reference price source and the bottleneck, a pattern the corpus shows recurring years later when Coinbase went down for some users during a 2021 plunge while its own stock fell ~7%.
The trend: Cryptocurrency markets are settling into sharp, correlated boom-bust corrections in which exchange platforms double as the system's price oracle and its most visible point of failure.