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What Happens to My 401k If the Stock Market Crashes?

If the stock market experiences a significant decline, the value of your 401(k) will fall in proportion to how much of it is invested in equities.

Moore Invested

For example, if your portfolio is 70% equities and the market drops 30%, your equity holdings would lose roughly 21% of the total portfolio value. This is uncomfortable but not a permanent loss unless you sell. Historically, the stock market has recovered from every major crash, including the 2008 financial crisis, the 2020 pandemic crash, and the significant volatility seen in early 2025. The most damaging response to a market crash is panic selling, which locks in losses permanently and means missing the recovery. The key to surviving a market crash without lasting damage to your retirement plan is preparation before it happens: appropriate asset allocation that reflects your actual risk tolerance, a cash reserve that allows you to avoid selling equities during downturns to fund living expenses, and an income floor from guaranteed sources that covers essential needs regardless of market conditions. Retirees are more vulnerable than accumulators because they are taking withdrawals, which is why sequence of returns risk and maintaining a sound withdrawal strategy are essential parts of any retirement income plan.

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