How does a Bitcoin flash crash occur?

The speed and severity of a flash crash can often be hard to understand. For the average investor, it sparks terror and perhaps confirms their deepest fears of their crypto stash becoming worthless. But with a calm head, the “tripwire” for a BTC crash is usually tied to a certain combination of interconnected factors. 

Let’s take a look at how flash crashes happen:

• Liquidation of leveraged positions when markets move unexpectedly. If leveraged traders can’t maintain their collateral during a big market drop, exchanges automatically sell their position to pay off the loan. When this happens on a large scale, it sends a wave of selling pressure through the market, crashing prices along the way.
• Algorithmic trading errors can cause a cascade of sell orders. Many traders use computer programs with preset rules. When these systems react to unusual market conditions, the trading bots can start selling aggressively. This then has a knock-on effect, sending sell signals and causing a chain reaction of automatic selling. 
• Low market liquidity makes prices more sensitive to large trades. Think of this as far more active sellers than buyers. For BTC, it’s more prevalent on smaller exchanges where someone wants to sell a large amount quickly. They exhaust the available buy order immediately and cause a sudden BTC drop.
• Technical glitches in exchange infrastructure can cause trading to break down. It could be from servers going offline, data feeds freezing or order matching failing. This can lead to incorrect pricing displays and orders executing at extreme prices. 
• Panic selling regularly occurs during scary news events. As the old trader’s saying goes, “Buy the rumor, sell the news.” When bad news breaks, markets could panic and everyone sells simultaneously, overwhelming buyers and sending prices plummeting.

Did you know? In December 2024, BTC finally breached the elusive $100,000 mark but then tumbled back down to $94,000 within hours. In the process, over 200,000 traders were liquidated, causing losses of over $1 billion.

Benefits of a Bitcoin flash crash

The unfurling of a crypto market crash sends an icy stab through most investors’ bodies; of course, they are highly unfavorable market conditions in most scenarios. But once you’ve gotten over the initial shock, there can be some hidden benefits to explore. 

• Exceptional buying conditions: While destructive for panicked investors, for those who are prepared, it offers a golden buying opportunity to buy BTC at a substantially discounted price. 
• Market stress test: Assuming there is a quick recovery, these types of events serve as a stress test to get valuable insight into how markets react under extreme circumstances. 
• Improved industry practices: It provides a learning opportunity for platforms like crypto exchanges to understand what went wrong and improve their infrastructure to avoid incidents in the future.
• Increased investor protection: Flash crashes attract the attention of mainstream media and regulators. This focus can be a catalyst for better regulation and protection for retail investors.

Did you know? Despite its reputation for crashes and volatility, BTC now shows signs of becoming a mature asset. It can be less volatile than many well-known securities, such as the “Magnificent 7,” which includes Nvidia, Meta, Tesla and others. 

Examples of Bitcoin flash crashes

There have been several BTC flash crashes since the cryptocurrency was launched in 2009. Some of the biggest exchanges have seen prices evaporate in minutes, and market-wide crashes have left investors grappling with wiped-out portfolios. 

On June 19, 2011, the infamous Mt. Gox exchange was exposed to a database hack and compromised accounts. BTC’s price was pulverized from $17 down to $0.01, almost valueless. It was an early setback for Mt. Gox and BTC’s reputation, but it exposed early exchange vulnerability and showed the need for more robust infrastructure. 

More recently, on March 18, 2024, BTC flash crashed on BitMEX. While other exchanges were trading at over $60,000, the price on BitMEX crumbled down to $8,900. It all happened in just two minutes, but the recovery was swift, with prices rebounding to normal levels within 10 minutes. 

In addition, BTC-EUR prices on Coinbase briefly crashed from €63K to €48K, sharply diverging from other markets, as reported by Kaiko Research.

CryptoQuant’s head of research, Julio Moreno, commented on the flash crash that saw Bitcoin briefly drop to around $88,800 on December 5, 2024. According to him, the flash crash was driven by a sell-off cascade and deleveraging in the BTC futures market, with open interest dropping as leveraged long positions were liquidated.

COVID-19 was also responsible for a market-wide crash in March 2020 when the world’s most widely held crypto slid 50% in two days. The price collapsed from over $9,000 to below $4,000. It then took two months for market prices to return to previous levels.

How to protect against a Bitcoin flash crash in the future

Flash crashes are almost impossible to accurately predict. When they strike, things happen quickly. Usually, the damage is done before a human can react, particularly when positions are liquidated and trading bots react to sell signals. But it is still possible to prepare and protect yourself against the fallout. 

• Set up price alerts at key technical levels: This will help to alert you to unnatural market conditions so you are not caught off guard. 
• Use leverage lightly; flash crashes burn highly leveraged traders instantly. So, don’t overexpose yourself to highly leveraged market positions.
• Learn to use a stop loss to protect capital. This enables you to sell your position early on in a crash, although they’re not foolproof, as a flash crash can fly past a stop loss in the worst cases. 
• Keep spare capital in reserve to give you the ability to capitalize on low market prices when they arrive.
• Don’t keep the bulk of your holdings in an exchange account. Crashes can put platforms under severe financial stress, so try to self-custody your assets.

As learned, flash crashes happen fast and can wipe out positions in seconds, especially for leveraged traders. Keeping a diversified portfolio, setting stop-loss orders and only investing what you can afford to lose are simple but effective ways to reduce risk during sudden market drops.