Depending on your company or your company's 401k manager, you might be able to shift to treasury bonds or something somewhat more stable. But, if you're more than 10 years from retirement age it kind of doesn't matter, unless we actually see the end of western capitalist supremacy, in which case your 401k is screwed regardless of what you do. Most 401k's shift investments based on how far you are from retirement age, so in your 20's it's in the riskiest investments and in your late 50's early 60's it shifts to the most stable investments.