Money & Business

Bitcoin’s Wildest Days

On March 12, 2020, as Covid-19 shut down the world, bitcoin lost 37% of its value in a single day. That is the biggest one-day move since 2014, up or down. Here are the 25 wildest days, 13 of them rises and 12 falls. Eight came in the mania of 2017.

Bloomberg report on the Federal Reserve's emergency rate cut in March 2020

Pictured: Bloomberg’s report on the Federal Reserve’s emergency cut to near-zero rates on March 15, 2020. It came three days after #1 (a 37.17% fall) and four days before #8 (an 18.19% rebound).

Rank Date Direction One-day move Price the day before Price at day’s end Change per coin Year
1Mar 12, 2020▼ Fall−37.17%$7,911$4,971$2,9412020
2Dec 7, 2017▲ Rise+25.25%$14,292$17,900$3,6082017
3Jul 20, 2017▲ Rise+23.94%$2,273$2,818$544.172017
4Jan 14, 2015▼ Fall−21.14%$225.86$178.10$47.762015
5Dec 6, 2017▲ Rise+19.93%$11,917$14,292$2,3752017
6Feb 8, 2021▲ Rise+18.75%$38,903$46,196$7,2932021
7Sep 14, 2017▼ Fall−18.74%$3,883$3,155$727.642017
8Mar 19, 2020▲ Rise+18.19%$5,238$6,191$952.752020
9Aug 18, 2015▼ Fall−18.18%$257.98$211.08$46.902015
10Jan 15, 2015▲ Rise+17.82%$178.10$209.84$31.742015
11Apr 2, 2019▲ Rise+17.36%$4,158$4,880$721.692019
12Jan 16, 2018▼ Fall−16.85%$13,820$11,490$2,3292018
13Jun 13, 2022▼ Fall−15.97%$26,763$22,487$4,2752022
14Feb 5, 2018▼ Fall−15.97%$8,277$6,955$1,3222018
15Jan 13, 2015▼ Fall−15.66%$267.80$225.86$41.932015
16Oct 25, 2019▲ Rise+15.58%$7,493$8,661$1,1672019
17Jul 17, 2017▲ Rise+15.47%$1,930$2,228$298.592017
18Jan 15, 2016▼ Fall−15.33%$430.31$364.33$65.982016
19Sep 15, 2017▲ Rise+15.30%$3,155$3,638$482.572017
20Nov 12, 2014▲ Rise+15.19%$367.70$423.56$55.872014
21Dec 26, 2017▲ Rise+14.78%$14,027$16,100$2,0732017
22Feb 28, 2022▲ Rise+14.54%$37,710$43,193$5,4832022
23Nov 9, 2022▼ Fall−14.35%$18,541$15,881$2,6602022
24Jan 11, 2017▼ Fall−14.31%$907.68$777.76$129.922017
25Feb 5, 2026▼ Fall−14.13%$73,020$62,702$10,3182026

How this list works. Bitcoin trades around the clock, so there is no official closing bell. Each day here runs midnight to midnight UTC, and the move is that day’s closing price against the previous day’s, in US dollars, from Yahoo Finance’s daily history (September 17, 2014 to October 11, 2026).[3] Days are ranked by the size of the move, whichever way it went. Swings within a day are often much bigger and aren’t counted, and a crash that runs across midnight can be split into two smaller days. Figures from other price sources can differ by a few points on some days, most of all on August 18, 2015 (#9). Only one of the 25 days is more recent than 2022: February 5, 2026, when bitcoin fell 14.13%. Where the data comes from: this list combines Bittery’s biggest one-day price drops and biggest one-day price gains, which cross-check every day against Blockchain.com’s exchange-average price.[1][2] RList recomputed the moves from the same Yahoo Finance closes, and every figure matched. This list is for information only, not investment advice.

The Top 10

▼ #1

March 12, 2020 — −37.17%

Crypto traders call it “Black Thursday”. As Covid-19 spread, markets everywhere crashed, and the S&P 500 had its worst day since 1987. Bitcoin fell from $7,911 to $4,971 in a day, nearly twice the size of any other drop on this list.[4] Forced selling of borrowed bets on crypto exchanges made the fall worse.[5] Yet bitcoin had won back all of its losses by May 2020, well before stocks did.[4]

▲ #2

December 7, 2017 — +25.25%

The peak of 2017’s bitcoin mania. Bitcoin jumped from $14,292 to $17,900, and the Coinbase app hit #1 among free apps in Apple’s US App Store for the first time. Coinbase’s website struggled to stay up under the demand.[6] Wall Street was only three days away from its first bitcoin futures contracts.[7] Bitcoin had its highest close of that cycle nine days later.

▲ #3

July 20, 2017 — +23.94%

That summer, bitcoin’s community was fighting over how to upgrade the network, and many feared bitcoin would split in two. On July 20 miners lined up behind BIP 91, a compromise route to the “SegWit” upgrade, and the relief sent bitcoin from $2,273 to $2,818.[8] Three days earlier, on July 17, it had risen 15.47% (#17), as support for the plan grew.

▼ #4

January 14, 2015 — −21.14%

The bottom of bitcoin’s long 2014–15 slump. Bitcoin fell below $200 for the first time in more than a year and closed at $178.10, its lowest close in Yahoo Finance’s data. It came a day after a 15.66% fall (#15). The crash was so deep that the cloud-mining company CEX.IO paused its service because mining cost more than it earned.[9] The next day bitcoin bounced back (#10).

▲ #5

December 6, 2017 — +19.93%

Bitcoin broke through $14,000 for the first time and was up more than 40% in December alone.[10] Together with the next day’s 25% surge (#2), it took bitcoin from $11,917 to $17,900 in two days, a 50% gain.

▲ #6

February 8, 2021 — +18.75%

Tesla’s annual report revealed that it had “invested an aggregate $1.50 billion in bitcoin”. It also said it expected to start accepting bitcoin as payment for its cars.[11] Bitcoin jumped from $38,903 to $46,196, the biggest one-day rise since 2017 at the time.

▼ #7

September 14, 2017 — −18.74%

BTCChina, one of China’s biggest bitcoin exchanges, said it would stop all trading at the end of the month. The announcement came ten days after Chinese regulators banned initial coin offerings.[12] Bitcoin fell from $3,883 to $3,155, then rose 15.30% the very next day (#19).

▲ #8

March 19, 2020 — +18.19%

A week after Black Thursday (#1), and four days after the Federal Reserve cut its key interest rate to 0–0.25% in an emergency move,[13] bitcoin rose from $5,238 to $6,191. It was the start of the climb that took bitcoin from under $5,000 to a record above $60,000 within a year.

▼ #9

August 18, 2015 — −18.18%

A “flash crash” on the Bitfinex exchange, where a wave of borrowed bets being forcibly sold briefly knocked the price down 29% to $179.35.[14] On Yahoo Finance’s figures, bitcoin closed the day 18.18% lower. Measured by Blockchain.com’s average across exchanges, the fall was only about 13.5%, the biggest gap between price sources of any day on this list.[1]

▲ #10

January 15, 2015 — +17.82%

The day after the 2015 bottom (#4), bitcoin bounced from $178.10 to $209.84. Bitcoin’s price swung by more than 15% on each of three days in a row, January 13, 14 and 15, 2015, and all three are on this list (#15, #4 and #10).

Bitcoin Crypto Markets Money Records

Sources

  1. Bittery, “Bitcoin’s Biggest One-Day Price Drops” (data as of October 9, 2026; includes the Blockchain.com cross-check) — https://bittery.io/posts/bitcoin-biggest-one-day-drops.
  2. Bittery, “Bitcoin’s Biggest One-Day Price Gains” (data as of October 10, 2026) — https://bittery.io/posts/bitcoin-biggest-one-day-gains.
  3. Yahoo Finance, Bitcoin USD (BTC-USD) daily history, UTC daily closes from September 17, 2014 to October 11, 2026, retrieved October 12, 2026 — https://finance.yahoo.com/quote/BTC-USD/history/.
  4. Decrypt, “Bitcoin was tracking the stock market. Not anymore” (May 2020; S&P 500’s worst day since 1987, bitcoin’s recovery) — https://decrypt.co/28776/bitcoin-was-tracking-the-stock-market-not-anymore.
  5. Coin Metrics, “State of the Network: Issue 47” (March 2020 liquidations) — https://coinmetrics.substack.com/p/coin-metrics-state-of-the-network-36c.
  6. TechCrunch, “Coinbase hits top spot on Apple’s US App Store” (December 7, 2017) — https://techcrunch.com/2017/12/07/coinbase-hits-top-spot-on-apples-us-app-store/.
  7. Bloomberg, “Bitcoin Wildness Highlights Worries as Futures Trading Nears” (December 7, 2017) — https://www.bloomberg.com/news/articles/2017-12-07/as-bitcoin-heads-for-prime-time-a-wild-session-raises-questions.
  8. Cointelegraph, “BIP 91 Lock-In Leads Bitcoin Higher Despite Weekend Worries” (July 2017) — https://cointelegraph.com/news/bip-91-lockin-leads-bitcoin-higher-despite-weekend-worries.
  9. Fortune, “Bitcoin continues downward spiral, plunges below $200” (January 14, 2015) — https://fortune.com/2015/01/14/bitcoin-continues-downward-spiral-plunges-below-200/.
  10. Bloomberg, “Bitcoin Soars Through $14,000 Mark, Up More Than 40% This Month” (December 2017) — https://www.bloomberg.com/news/articles/2017-12-07/bitcoin-soars-through-14-000-mark-up-more-than-40-this-month.
  11. Tesla, Inc., Form 10-K for 2020, filed February 8, 2021 — https://www.sec.gov/Archives/edgar/data/1318605/000156459021004599/tsla-10k_20201231.htm.
  12. Fortune (Reuters), report on BTCChina halting trading (September 14, 2017) — https://fortune.com/2017/09/14/bitcoin-price-china-btcchina/.
  13. Board of Governors of the Federal Reserve System, “Federal Reserve issues FOMC statement” (March 15, 2020) — https://www.federalreserve.gov/newsevents/pressreleases/monetary20200315a.htm.
  14. CoinDesk, “Bitcoin Price Falls 14% Following Bitfinex ‘Flash Crash’” (August 19, 2015) — https://www.coindesk.com/markets/2015/08/19/bitcoin-price-falls-14-following-bitfinex-flash-crash; BitMEX, “Bitfinex Flash Crash Postmortem” — https://blog.bitmex.com/bitfinex-flash-crash-postmortem.