How Much of Each Asset Class Do I Need? An Age-Based Guide

One of the most common questions in investing is how much should I hold in stocks versus bonds? The honest answer is that it depends on your time horizon, your risk tolerance, and your goals — but age is a useful organizing lens, because it strongly shapes how much risk you can afford to take. This guide sketches a sensible progression while stressing that these are starting points, not prescriptions.

Why age matters: risk capacity

A young investor has decades of future earnings and time to recover from a drawdown, so a stock-heavy allocation makes sense — the long horizon lets compounding work and lets markets recover from crashes. Someone near retirement has less time and, once withdrawals begin, faces sequence-of-returns risk: a deep early loss combined with spending can do permanent damage. Risk capacity — your ability to absorb losses — generally falls with age even if your appetite for risk does not.

A rough progression

Old rules of thumb like hold your age in bonds or 110 minus your age in stocks are crude but capture the direction of travel. In your 20s and 30s, a heavily equity-tilted mix (think 80-100% stocks, like the 80/20 or Warren Buffett portfolios) is defensible given the long runway. In your 40s and 50s, gradually adding bonds and diversifiers moves you toward balance — the 60/40, Three-Fund, or Golden Butterfly territory. Approaching retirement, many investors want a genuinely balanced or all-weather mix that can survive any environment.

The glide path

Shifting allocation gradually over time is called a glide path, and it is the engine inside target-date funds. Rather than flip from aggressive to conservative overnight, you ease the transition over years. Some research even supports a rising-equity path — holding the least stock right around the retirement date, when sequence risk peaks, then increasing it again through retirement.

Beyond stocks and bonds

Age-based rules usually simplify to two assets, but the same logic extends to diversifiers. Gold, TIPS, and commodities can improve resilience at any age by adding return drivers with low correlation to stocks — which is why several strategies here hold them regardless of the investor's age. The point is balance across environments, not just a stock-bond dial.

Make it personal

Age is a guide, not a rule. A steady job, a pension, or a high savings rate all raise your risk capacity; unstable income or a short goal horizon lower it. The best allocation is one you can actually hold through a full cycle — see our diversification guide for the principle, then test a few age-appropriate mixes in the simulator to feel how their drawdowns and growth compare before you commit.