How Much Crypto Is Too Much? Here's How to Pick the Right Percentage for You
5 min read
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5 min read
Everyone tells you not to put too much into crypto. Almost nobody tells you what "too much" is as a number.
So here is the number that actually matters, and it is not the one you think. If you put 2% of your portfolio into bitcoin, that 2% takes on roughly 7% of your total portfolio risk. Push it to 5%, and it takes more than 20%.
Read those two sentences again. Your money went up by a factor of 2.5, and your risk went up by a factor of 3. Sizing crypto is not a linear decision, and treating it like one is how people end up far more exposed than they meant to be.
When you say "I have 5% in crypto," you are describing where your money sits. You are not describing where your risk sits, and risk is what actually moves your portfolio around.
Risk concentrates in whatever moves most. Bitcoin is several times more volatile than a diversified stock portfolio, so every rupiah in bitcoin does far more work on your total swing than a rupiah in an index fund does. A small money weight becomes a large risk weight.
| Bitcoin allocation | Share of total portfolio risk |
|---|---|
| 1% | about 3% |
| 2% | about 7% |
| 5% | over 20% |
BlackRock's portfolio research puts a 5% bitcoin position at over 20% of a portfolio's total risk, with volatility running roughly 16% higher than a standard 60/40 portfolio. It recommends institutional investors with sufficient governance and risk tolerance consider 1% to 2%, and notes that larger allocations skew portfolio risk excessively.
There is no single correct number, but the credible ranges cluster more tightly than the internet suggests.
Notice how low the professional numbers are compared to how crypto is discussed socially. The people managing the largest pools of money are mostly at 1% to 2%.
The case for holding any crypto at all is diversification, and there is something real in it. Bitcoin's correlation with stocks runs around 0.3 to 0.5, and with bonds around 0.1 to 0.2. That is genuinely lower than most assets you could add.
But two caveats change how much weight that argument carries.
Correlation rises exactly when you need it to fall. In broad sell-offs, crypto has repeatedly moved down with equities rather than against them. We looked at that in detail in how bitcoin and stocks actually move together.
Low correlation does not mean low risk. An asset can be uncorrelated and still lose 70% on its own schedule. Correlation describes direction, not magnitude. Bitcoin did both in 2022, as we covered in what actually held its value when inflation spiked.
This is the part you can do tonight, and it does not require a market view.
1. Start from what you can lose entirely. Not what you expect to lose. What you could lose in full without changing your plans, your timeline, or your sleep. For most people with an ordinary income and no separate safety net, that number is smaller than they first say.
2. Convert it to a risk share, not a money share. As a rough working rule from the table above, your risk share lands near three to four times your money share. So 3% of your money is roughly 10% of your risk. Ask whether you are comfortable with the second number, because that is the one you will feel.
3. Decide your rebalancing rule before you buy. This matters more than the starting number. If crypto runs, a 3% position becomes an 8% position without you doing anything, and it is now a different portfolio than the one you chose. Write down the band, for example 3% with a rebalance at 5%, and follow it.
Before deciding your crypto percentage, price the alternative. A rupiah deposit tracked the BI Rate at 5.75% in July 2026, with no price risk at all. That is the return you are giving up for the risk you are taking on.
It is not an argument against holding any crypto. It is an argument for being deliberate about the size, because the risk-free option is not zero.
You can see the broader market and rate backdrop on the market page and the macro page.