Something unseen happened on US markets yesterday: S&P 500 lost 4%

The collapse in stocks in the US markets yesterday reached unprecedented levels. The S&P 500 index lost 4.1% of its value, ending at 2 648.94 points.
Losses in the other indices were no less, with the Dow Jones Index dropping by more than 1,175 points, or 4.6%. With a bit lower losses was the Nasdaq technology index, which lost 3.8% of its value.
From now on, the good news for investors is that the long-awaited correction is a fact, and even painful, may not be particularly long. The bad thing is that it is still unclear whether this is the beginning of something more serious as a trend in financial markets.
The broad index S&P 500 has already lost nearly 10% of its peak. So, the statistics for long periods without a 3% correction, or 5% correction, is already in the history. The record session was interrupted, so counting could start again.