How Much of Your Money Should Be in Stocks?

Almost everyone asks this question backwards. They start with a percentage, a "60/40" or a "you should have 90% in stocks at your age," and try to reverse-engineer their life to fit it. That is the wrong order. The right number does not fall out of your age or a chart. It falls out of one thing: when you are going to need the money.

So instead of a magic percentage, here is a framework that starts from your actual timeline and works outward. Four steps.

Step 1: Money you need soon does not belong in stocks

Before you think about investing at all, wall off the cash you might need in the next one to three years. Rent, an emergency, a car repair, a wedding, a house deposit you are saving toward. That money should sit in a high-yield savings account, not the stock market.

The reason is not caution for its own sake. Stocks can fall 20%, 30%, sometimes more, and they can stay down for a year or two before recovering. If your car dies during one of those dips, you are forced to sell at the bottom to cover it. That is how a temporary paper loss becomes a permanent real one. Cash you might need soon has no time to recover, so it should never be exposed to that risk.

This is why the first move is almost always to size an emergency fund first, before a single dollar goes into stocks. You can work out your own number with an emergency fund calculator. Only after that safety layer is in place does the rest of the framework apply.

Step 2: Money you will not touch for 5+ years is what belongs in stocks

Now flip it. The money you genuinely will not touch for five years or more is exactly the money that should be in stocks. That long horizon is not a nice-to-have. It is the entire thing that makes stock volatility survivable.

Over any single year, the stock market is close to a coin flip. Over five, ten, twenty years, the odds shift heavily in your favor, because you give every drawdown time to recover and every reinvested gain time to compound. The volatility that would wreck you on a one-year timeline becomes background noise on a twenty-year one. Time horizon is not a detail here. It is the whole case for owning stocks in the first place.

Nobody can tell you the right stock percentage without first knowing one thing: how long until you need the money. Time horizon is the real deciding factor. Everything else is a footnote.

Step 3: The rules of thumb, honestly

You have probably heard "100 minus your age equals the percent you should hold in stocks." A 30-year-old holds 70% stocks, a 60-year-old holds 40%. Because people are living longer, the updated versions use 110 or even 120 minus your age, which pushes those numbers higher.

These are fine as a starting point, and useless as gospel. Here is what they are actually trying to capture: the younger you are, the more of your money should be in stocks, and there are two real reasons why.

• Time to recover. A 25-year-old who watches their portfolio halve has thirty-plus years for it to climb back and then some. A 68-year-old drawing down that same portfolio does not. More time on the clock means you can carry more volatility without it ever turning into a realized loss.
• Human capital. When you are young, your biggest asset is not your portfolio, it is your future earnings, all the paychecks you have not received yet. That steady income acts like a giant bond position sitting off your balance sheet, which frees the money you do invest to take more equity risk.

So the direction the rule points is right: younger usually means more in stocks. But the exact number is not sacred. Someone with an unstable income or a low tolerance for watching balances swing should dial it down regardless of their age. The rule is a conversation starter, not an answer.

Step 4: How much to add each month

There are really two questions hiding inside "how much should I invest." One is about the lump you already have, which Steps 1 through 3 handle. The other is about the flow: how much to add every month from here on. For most people, that second question matters far more.

Rather than chase a dollar figure, most people are better served by investing a consistent percentage of income toward long-term goals. A commonly cited target is somewhere around 15 to 20% of income, invested after the emergency fund is funded and high-interest debt is handled. If that feels out of reach, that is normal. Start at whatever you can sustain, even a small percent, and raise it as your income grows.

The single most important move is to automate it. A transfer that happens on payday, before you can talk yourself out of it, beats a heroic manual contribution you keep meaning to make. Consistency, not size, is what does the heavy lifting over a decade.

The honest part: there is no single right number

Anyone who gives you one clean answer for how much to hold in stocks is either selling something or skipping the disclaimers. The honest version is that it depends on three things, and they are personal to you:

• Your time horizon for the money, which decides how much volatility it can absorb.
• Your risk tolerance, the real, in-the-gut kind, not the answer you give on a survey when markets are calm.
• Your job stability, because a shaky income means you may be forced to sell at the worst moment, which argues for more cash and less exposure.

Two people the same age can land in completely different places and both be right. That is not a cop-out. It is the actual answer, and the framework above is how you find your own version of it instead of borrowing someone else's.

The move that actually matters

Figuring out how much is the easy half. The hard half is doing it consistently, month after month, and knowing what to actually buy once the money is there. That second part is where most people stall out and leave everything in cash by default. OpenTrade turns "I should be investing this" into a plain-English daily habit, so the plan you just built here actually runs instead of living in a browser tab.