Module 12: Risk Management and Trading Psychology
Portfolio Construction and Concentration
Chapter 5 of 14 · about 5 minutes
5.1 Twelve tokens, one bet
Mint proudly showed Hash a diversified portfolio: twelve different tokens across several sectors.
Hash looked at the list. "Eleven of these are smaller tokens that tend to move with Ether, and most are on the same blockchain. Your stablecoins are all one issuer, all on one exchange. In a crash, how many of these do you think will move independently?"
Mint thought about it. "Probably none."
"Diversification isn't about how many things you own," said Hash. "It's about how differently they behave when things go wrong."
5.2 Your total financial picture
Crypto risk should be considered as part of your whole financial life, not in isolation.
| Layer | Purpose | Typical assets |
|---|---|---|
| Emergency fund | Cover unexpected expenses without selling investments | Cash or very safe savings |
| Core long-term savings | Long-term growth and retirement | Diversified assets appropriate to your country and situation |
| Crypto allocation | Higher-risk, higher-potential-return portion | BTC, ETH, and other crypto |
| Speculative allocation | Money you can afford to lose completely | Small tokens, memecoins, experiments |
Many financial planners suggest building an emergency fund before investing in volatile assets. How much of your total savings belongs in crypto is a personal decision (Chapter 1), and the personal finance module covers it in detail.
5.3 Core and satellite within crypto
Module 11, Chapter 13 introduced the core and satellite structure:
| Part | Typical contents | Role |
|---|---|---|
| Core | BTC and ETH | Most established, most liquid, longest track record |
| Satellites | Thesis-driven positions in sectors | Potential outperformance, with higher risk |
| Speculative | Very small positions in high-risk ideas | Lottery-like exposure, sized to lose |
5.4 Concentration limits
Limits stop any single mistake from dominating your results.
Example limits for a crypto portfolio (illustrative):
| Limit type | Example |
|---|---|
| Single token beyond BTC and ETH | No more than 5% to 10% of the crypto portfolio |
| Single sector | No more than 20% to 25% |
| Speculative bucket in total | No more than 5% |
| Single exchange | Only what you're actively trading (Module 1, Chapter 7) |
| Single DeFi protocol | Sized so a total loss is survivable (Module 9, Chapter 13) |
| Single stablecoin | Spread larger holdings across issuers (Module 10, Chapter 7) |
These aren't universal rules. The point is to set your own limits deliberately, before an exciting opportunity tempts you to break them.
5.5 Correlation and true diversification
As Module 10, Chapter 10 explained, crypto assets often move together, especially in crashes.
| Position mix | Real diversification in a crash |
|---|---|
| Twelve smaller tokens on one chain | Very little |
| BTC, ETH, and a few sector tokens | Limited |
| Crypto plus stablecoins | Moderate: stablecoins hold value (if they hold their peg) |
| Crypto plus assets outside crypto | Greater |
Within crypto, stablecoins and short-term tokenised government bonds (Module 11, Chapter 7) act as the main stabilisers. Beyond that, true diversification comes from assets outside crypto.
5.6 Platform diversification
Diversification also applies to where and how you hold assets:
| Platform risk | Diversification approach |
|---|---|
| Exchange failure | Use more than one reputable exchange; keep long-term holdings in self-custody |
| Wallet compromise | Separate vault, spending, and burner wallets (Module 2, Chapter 12) |
| Chain-specific problems | Avoid having everything on one network or bridge |
| Stablecoin issuer problems | Spread larger stablecoin holdings |
5.7 Rebalancing
Over time, winners grow and losers shrink, shifting your portfolio away from its intended mix. Rebalancing brings it back.
Example. Node wants crypto to be 10% of total savings.
| Start | After a strong crypto rally | |
|---|---|---|
| Total savings | $200,000 | $250,000 |
| Crypto value | $20,000 (10%) | $60,000 (24%) |
| Target crypto value at 10% | $25,000 | |
| Rebalancing action | Sell about $35,000 of crypto |
Rebalancing forces you to take profits after rallies and to buy after declines, which is the opposite of what emotions usually push you to do.
| Rebalancing method | How it works |
|---|---|
| Calendar | Rebalance on a set schedule, such as every quarter |
| Threshold | Rebalance when an allocation drifts beyond a set band, such as more than 5 percentage points |
| Combination | Check on a schedule, act only if outside the band |
Rebalancing may create taxable events in many countries (Module 14, Chapter 2), so consider tax implications.
"Selling more than half of my crypto after a great rally feels wrong," said Node.
"It feels wrong, which is why it works," said Hash. "Every major crypto crash wiped out gains for people who let their allocation grow without limit."
5.8 Try it yourself
List all your crypto holdings, real or hypothetical, with their values. Group them by core, satellite, and speculative; by sector; by platform; and by stablecoin issuer. Check each group against limits you set yourself. Then calculate what share of your total savings is in crypto and whether rebalancing is needed.
Key takeaways from this chapter
- Diversification depends on how differently assets behave in a crisis, not how many you own.
- Consider crypto within your whole financial picture, after an emergency fund.
- A core and satellite structure keeps riskier positions smaller than BTC and ETH holdings.
- Set concentration limits for tokens, sectors, speculation, exchanges, protocols, and stablecoins.
- Crypto assets are highly correlated; stablecoins and assets outside crypto provide more real diversification.
- Diversify platforms and custody, not just assets.
- Rebalancing restores target allocations, taking profits after rallies and buying after declines; consider taxes.