Hello, crypto community! Recently, I was thinking about how the history of financial markets repeats itself, and I remembered an event that many people in the crypto space do not fully understand. It’s about the day that forever changed the perception of market stability.

On October 19, 1987, what is still called Black Monday occurred. On that day, the Dow Jones Industrial Average plunged by 22.61% in a single day—this remains one of the largest single-day declines in history. The crash spread worldwide, affecting markets in Europe, Asia, and everywhere. Sounds like a nightmare, right?

So what led to Black Monday? There were several factors. First, by 1987, stocks had become overvalued after a period of rapid growth. People took out loans to buy stocks, and when prices started falling, they had to sell urgently to pay off their debts. This created a snowball effect.

Second, algorithmic trading played a role. Computerized systems were programmed to automatically sell when prices dropped below a certain level. Imagine: thousands of computers begin selling at the same time, and no one can stop this process. Add high interest rates, international tensions, and widespread panic—and you get the perfect storm.

After the crash, investors lost billions of dollars. This affected not only the wealthy but also ordinary people who had invested their savings. Regulators were forced to introduce new rules, including emergency mechanisms that halt trading when prices fall too quickly. It took years for the market to recover.

Now, here’s what worries me: when I look at the crypto market, I see many parallels with what happened in 1987. Volatility, algorithmic trading, periods of overvaluation followed by sharp declines. Crypto markets also have automated systems that can trigger an instant crash. If a major event causes panic and a large number of traders start selling at the same time, we could see a Black Monday in the crypto space as well.

The key difference is that crypto markets remain largely unregulated compared to traditional exchanges. Without proper safeguards, they’re more vulnerable to extreme fluctuations. That means we need to be smarter.

How can you protect yourself? First—diversify your portfolio. Don’t put all your funds into a single asset. Second—use stop-loss orders to automatically exit positions at a certain level of decline. Third—and most importantly—don’t panic. When the market is falling, people make the worst decisions. Step back and assess the situation calmly.

Right now on Gate, you can track the movements of major assets. USUAL is trading around $0.02, down 2.33%, PENDLE is at $1.86, down 2.41%, and IOTA is around $0.06, down 1.81%. Even during correction periods, it’s important to understand what’s happening and act intentionally. History shows us that Black Monday isn’t just a name—it’s a lesson about how quickly a situation can turn around. Be prepared.