A narrow stone slab stands upright on a dark floor, blocking overlapping translucent discs on one side from scattered particles on the other

Research

Managing risk: When diversification isn't enough

Owning many investments limits the damage any one can do, but not what happens when they all fall at once. Other ways to slow risk down.

When basketball teams face an opponent with a prolific scorer, they tend to say things like "we know we can't stop him, but we just hope to slow him down."

That's a good way to look at managing your investment risk. You can't eliminate it, but you can do things to reduce its impact.

Most financial professionals agree that diversificationGlossary: Spreading money across different investments so that no single company, sector or event can do outsized damage to the whole portfolio. is a good way to manage risk. Otherwise, everyone would just go all-in on their favorite investment idea.

Fortunately, investment activity is centered on Wall Street rather than Las Vegas, so that all-in mentality isn't very evident in money management. Recognizing that no one's judgement is perfect, and that unexpected circumstances can make a mess of the best ideas, people typically spread their money among several investments.

Keep reading with All-Access

Get a wealth of educational content and powerful investing tools backed by a quarter century of research.