The stock market is no place for amateurs.

In fact, I really wish it were hard to invest in stocks. Instead, it’s easy, it’s free, and we’ve got a lot of new “investors” pouring into the market.

I’ve said this before: You need to learn about investing before you put one penny in the stock market. So today, we’re going to talk about something every investor has to wrestle with: position sizing.

If you really like a stock, do you make it 1% of your portfolio? 5%? 50%? There are no hard and fast rules. But here is my framework for making these decisions...

First, what is your conviction level? You get conviction by doing research. It doesn’t come from randomly picking stocks. And the more conviction you have, the bigger you can make the position.

Of course, a high level of conviction does not necessarily mean you’re right. My highest conviction trade ever was a bet that the Canadian housing market would blow up. I ended up doing pretty well, but it was not the greatest trade of all time.

I’ve also had some low conviction trades that worked out surprisingly well.

The second thing to consider is liquidity. How easy will it be to sell at a reasonable price when you are ready? If you are buying a smaller stock with low liquidity, you should make the position smaller.

This isn’t much of an issue with large, heavily traded stocks like Apple (AAPL), General Electric (GE), or Bank of America (BAC). But when you trade very small stocks, it can be harder to sell than it was to buy. A lot of people found this out the hard way when the market crashed in March.

The third factor is volatility. This is how quickly the price of an asset moves up and down, and by how much. The more volatile an asset is, the smaller you want your position to be.

Take bitcoin, for example. I have a high level of conviction about bitcoin, but it’s not a large part of my portfolio because it is very volatile. So volatile that I’d call it violent—the price of bitcoin can shoot up or down 10% or more in a very short period of time.

It is much too risky to have a large position in a highly volatile asset like that. It would dominate the returns of your portfolio, stress you out, and possibly lead you to sell at the worst possible time.

You can have much larger positions in low volatility assets, like bonds. But even then, you need to be careful—low volatility assets can still crash.

Finally, you want to consider asset allocation. How does this position fit into my overall portfolio?

Most people make the mistake of building a portfolio from the bottom up. They buy stocks A, B, and C, and asset allocation is an afterthought (if they ever think about it at all).

You will have much more success with a top-down approach, where you start with the asset allocation you want, and fill out the specific investments from there.

This is exactly what I did with the Awesome Portfolio, which allocates:

• 20% to stocks

• 20% to bonds

• 20% to gold

• 20% to cash

• 20% to real estate

I chose these allocations because they tend to produce the highest returns over the long term, but with the lowest level of risk and the lowest level of volatility.

Then I choose the specific investments to fill out the portfolio—not the other way around.

Like I mentioned earlier, there are a lot of inexperienced investors pouring into the stock market. I suspect most of them are shooting in the dark... putting tons of money into whatever hot tip some friend mentioned during their last Zoom happy hour, with little thought to risk, position size, or portfolio allocation.

This is a terrible way to invest. Actually, I don’t even consider it investing—it’s “screwing around with stocks.” If you want to do things a better way... a less stressful and more profitable way, click here.

Jared Dillian