The Nasdaq Just Had Its Worst Day in 4 Months. Here's the Level That Would Signal a Correction, and What History Says Investors Can Do About It.

The Nasdaq Composite (^IXIC -0.21%) experienced its most significant decline in four months on October 22, closing at 26,008.86, marking a 2.6% drop. This drop suggests the index could be heading toward a correction, defined as a 10% decline from the recent highs. To reach a correction, the Nasdaq would need to fall an additional 4.1%, marking the third correction of the year.

Historically, corrections occur every one to two years, and despite their frequency, market recoveries have been swift, with most declines of more than 10% fully recovered within months. The last prolonged downturn in the Nasdaq occurred from early 2022 to early 2024. Despite the volatility, the Nasdaq has still produced an 83.5% total return over the last five years.

The increase in corrections can be attributed to the rapid spread of information and the ease of acting on it, facilitated by high-frequency and algorithmic trading, AI-driven trading, and free trading on mobile apps. This has led to knee-jerk reactions and heightened susceptibility to sharp declines and swift recoveries. To navigate this increased volatility, long-term investors should hold quality companies, index funds, and exchange-traded funds.

However, given the concentration of highly influential mega-cap companies, particularly in the AI sector, investors should anchor their portfolios with high-conviction companies from various sectors to preserve independent thinking and mitigate sudden drops and pops driven by market sentiment.