|

Bitcoin price flash crash on Binance US sees BTC drop 87% following algorithm error

  • Following Bitcoin price all-time high earlier this week, Binance US traders witnessed BTC fall by over 80% on the trading platform.
  • The American arm of the leading crypto exchange explained that the flash crash was due to an error in the trading algorithm.
  • Bitcoin price reached a low of $8,200 before resuming trading at the correct price.

Bitcoin price reached an all-time high of over $67,000 on October 20 and the bellwether cryptocurrency is starting to retest key support levels. While BTC dropped to roughly $62,000 on most exchanges, traders on Binance US witnessed a flash crash of 87%.

Bitcoin price suffers 87% fall due to a bug

Bitcoin price rapidly dropped 87% on the Binance US exchange on October 21, as BTC reached a low of $8,200 from approximately $65,000, while the leading cryptocurrency’s price remained above $60,000 on other exchanges. The bellwether cryptocurrency quickly snapped back to its correct price following the flash crash.

According to Binance US officials, one of its institutional traders indicated to the firm that they had a bug in their trading algorithm, which may have caused the massive sell-off. The leading crypto exchange continues to look into the event and added that the institutional trader has fixed its bug and that the issue has been resolved.

Errors that cause flash crashes occur in the finance industry when traders accidentally make mistakes in the details of their intended trades by entering the incorrect price or order size. Large block trades could overwhelm the exchange’s order book, leading to a massive flash crash. 

Bitcoin price to retest crucial foothold before resuming rally

Bitcoin price continues to trend within an ascending parallel channel on the 4-hour chart. While BTC tagged the upper boundary of the governing technical pattern when it reached its all-time high at $67,000, the bellwether cryptocurrency is nearing the downside trend line of the chart pattern.

Bitcoin price may discover immediate support at the 50 four-hour Simple Moving Average (SMA) at $61,647. An additional foothold may emerge at the lower boundary of the parallel channel at $61,072, which coincides with the support line given by the Momentum Reversal Indicator (MRI).

BTCUSDT

BTC/USDT 4-hour chart

If selling pressure overwhelms the bulls, Bitcoin price may fall further to reach the 78.6% Fibonacci retracement level, which sits near the 100 four-hour SMA at $58,753. Lower levels are not expected unless a massive spike in sell orders materializes.

The 20 four-hour SMA at $63,831 acts as the first level of resistance for Bitcoin price after market participants engaged in profit-taking. Only slicing above this level and $64,691, the middle boundary of the governing technical pattern, would see BTC retest its all-time high. 

Author

Sarah Tran

Sarah Tran

Independent Analyst

Sarah has closely followed the growth of blockchain technology and its adoption since 2016.

More from Sarah Tran
Share:

Editor's Picks

XRP sell-off deepens amid weak retail interest, risk-off sentiment

Ripple (XRP) is edging lower around $1.36 at the time of writing on Wednesday, weighed down by low retail interest and macroeconomic uncertainty, which is accelerating risk-off sentiment.

Crypto Today: Bitcoin, Ethereum, XRP extend sell-off amid negative funding rates 

Bitcoin is down 15% in February and looks poised to extend its losses toward the yearly low of $60,000. Ethereum and Ripple are following in Bitcoin's footsteps, weighed down by a weak derivatives market. 

Hyperliquid tests key support as sell-side pressure intensifies

Hyerliquid (HYPE) drops to its 50-day Exponential Moving Average (EMA) at $28.85 at the time of writing on Wednesday, extending a decline of roughly 10% so far this week. 

Stellar Price Forecast: XLM risks revisiting $0.136 as sell-off continues

Stellar is trading below $0.160 at the time of writing on Wednesday, extending its correction for the fifth consecutive day. The bearish price action is further supported by rising short bets and declining Open Interest in the derivatives market. 

Bitcoin Price Annual Forecast: BTC holds long-term bullish structure heading into 2026

Bitcoin (BTC) is wrapping up 2025 as one of its most eventful years, defined by unprecedented institutional participation, major regulatory developments, and extreme price volatility.

Bitcoin: The worst may be behind us

Bitcoin (BTC) price recovers slightly, trading at $65,000 at the time of writing on Friday, after reaching a low of $60,000 during the early Asian trading session. The Crypto King remained under pressure so far this week, posting three consecutive weeks of losses exceeding 30%.