Concentration risk
How to know if your crypto portfolio is too concentrated
If one coin moves 30% and your whole portfolio swings with it, you do not have a portfolio. You have a leveraged single-asset bet. Here is how to tell, with numbers, in under five minutes.
The five-minute concentration check
Open your tracker and ask the following five questions. Two or more "yes" answers means your portfolio is structurally concentrated and a single-asset move can dominate your year.
- Does any single coin make up more than 50% of total value?
- Do your top two coins make up more than 70% combined?
- When that top coin drops 10%, does your total portfolio drop more than 5%?
- Did you ever explicitly choose your current allocation, or did the market choose it for you through drift?
- Could you absorb a 50% loss in your largest position without changing your financial plan?
The real metric: HHI
The Herfindahl-Hirschman Index squares each holding's percentage and sums the results. A single-asset portfolio scores 10,000. Below 1,500 is well-diversified. Above 2,500 is concentrated. A 70% BTC plus 20% ETH plus 10% SOL portfolio scores roughly 5,400, deep in the concentrated zone.
HHI is the standard concentration measure used in finance for a reason. It penalizes large positions disproportionately, which is exactly how risk behaves.
Drift is the silent driver
Most concentrated portfolios were not built that way on purpose. They started balanced and the best performer compounded into dominance. A 50/30/20 split with one position doubling becomes 67/20/13 without a single trade. This is allocation drift, and it is the most common source of concentration risk in crypto.
Multiple coins is not the answer
Adding more correlated coins does not fix concentration. Five Layer 1 chains move together. Five DeFi tokens move together. Diversification requires uncorrelated exposures, which is why the real fix combines reducing the largest position and adding low-correlation assets at the same time.
What to do once you know
Knowing your portfolio is concentrated does not mean selling everything. The rebalancing tool generates exact dollar moves across three strategy modes so you can pick the level of de-concentration that matches your conviction.
FAQ
What concentration percentage is too high?+
As a rule of thumb, no single coin should exceed 50% of total portfolio value, and your top two holdings should not exceed 70% combined. These are not absolute limits; they depend on conviction, time horizon, and risk tolerance, but most investors crossing them have not made a deliberate choice.
Is BTC concentration safer than altcoin concentration?+
BTC is less volatile than most altcoins, so a BTC-heavy portfolio is less violent on a daily basis. But concentration risk is structural. An 85% BTC portfolio still has a single point of failure. Whether you are comfortable with that depends on your conviction, not on BTC being safer than ETH.
How do I reduce concentration without taxable events?+
Direct new contributions toward underweight assets instead of selling overweight ones. Over a few months of DCA, the relative weight of your largest position drops without any sell transactions.
Now you know the warning signs. What does your concentration actually score?
Enter your holdings in Crypto Clarity AI and see your HHI, top-position weight, and dollar-level rebalancing targets in 60 seconds.
One-time $19. No wallet, no account, no upload. 7-day money-back guarantee.
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