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Back to OverviewAbout Portfolio Allocation
Free Online Tool
Investment Portfolio Chart
Enter the value or percentage of your holdings across Stocks, Bonds, Crypto, Real Estate, and Cash — visualize your asset allocation instantly and see how your portfolio compares to risk-adjusted diversification benchmarks.
How to Use This Tool (30 Seconds)
- 1Enter Each Asset Value: Input the current market value of your holdings in each category — Stocks, Bonds, Crypto, Real Estate, and Cash. Use today's values from your brokerage, exchange, or property estimate for an accurate allocation snapshot.
- 2View Your Allocation Split: The chart renders each asset class as a proportional segment of your total portfolio. The percentage breakdown updates in real time so you can see concentration risk immediately — any single asset above 60% of total portfolio value is flagged.
- 3Select Your Risk Profile: Choose Conservative, Moderate, or Aggressive to overlay the recommended target allocation for your risk tolerance against your actual holdings. The gap between target and actual is your rebalancing requirement.
- 4Read the Diversification Score: The summary panel calculates your portfolio's diversification score using the Herfindahl-Hirschman Index — a measure of concentration — and rates your allocation from Highly Concentrated to Well Diversified.
- 5Identify Rebalancing Actions: The chart shows which asset classes are overweight and underweight relative to your selected risk profile, and the dollar or percentage adjustment needed to reach your target allocation.
Portfolio Allocation Formulas — HHI and Rebalancing Math
The chart uses two core formulas: asset allocation percentage and the Herfindahl-Hirschman Index (HHI) — the concentration measure used by economists and portfolio managers to quantify diversification:
// Asset allocation percentage
assetShare (%) = (assetValue ÷ totalPortfolioValue) × 100
// Herfindahl-Hirschman Index — concentration score
HHI = Σ (assetShare%)²
HHI range: 0 (perfect diversification) → 10,000 (100% single asset)
Well Diversified: HHI < 1,500 | Moderate: 1,500–2,500 | Concentrated: > 2,500
// Rebalancing calculation per asset class
targetValue = totalPortfolio × (targetAllocation% ÷ 100)
rebalanceAmount = currentValue − targetValue
// Example: $100k portfolio, Stocks at 80%, target 60%
targetValue = $100,000 × 0.60 = $60,000
rebalanceAmount = $80,000 − $60,000 = −$20,000 (sell)
Annual rebalancing — trimming overweight assets and buying underweight ones — is one of the few evidence-backed portfolio management strategies available to retail investors. A 2019 Vanguard study found that disciplined annual rebalancing reduced portfolio volatility by up to 30% over 20-year periods compared to unmanaged drift, without sacrificing long-term returns.
Target Allocation by Risk Profile
| Asset Class | Conservative | Moderate | Aggressive | Risk Level |
|---|---|---|---|---|
| Stocks | 20–30% | 50–60% | 70–80% | High |
| Bonds | 40–50% | 20–30% | 5–10% | Low–Medium |
| Crypto | 0–2% | 2–5% | 5–15% | Very High |
| Real Estate | 10–20% | 10–15% | 5–10% | Medium |
| Cash | 10–20% | 5–10% | 2–5% | None |
Allocation ranges informed by CFA Institute asset allocation frameworks, Vanguard Target Retirement Fund glide paths, and Modern Portfolio Theory (MPT) diversification principles. Crypto allocations reflect emerging consensus among institutional portfolio managers for speculative alternative exposure.
⚡ Pro Tip
Most retail investors rebalance by selling overweight assets — triggering capital gains tax. A tax-efficient alternative is contribution-based rebalancing: direct all new deposits into underweight asset classes until the allocation normalizes, without selling anything. This achieves the same target allocation over 2–4 months, eliminates taxable events entirely, and is the method used by Vanguard and Fidelity in their automated rebalancing tools. If your chart shows Stocks overweight by 15%, stop buying stocks and redirect your next 3–4 months of contributions exclusively into Bonds, Cash, or whichever class is underweight — same outcome, zero tax consequence.
Disclaimer: This tool is for informational and educational purposes only and does not constitute financial or investment advice. Asset allocation targets are general guidelines and do not account for individual tax circumstances, investment horizon, liquidity needs, or risk tolerance. Consult a registered investment advisor (RIA) or certified financial planner (CFP) before making portfolio allocation decisions.
Frequently Asked Questions
Q: Should I enter current market value or cost basis for each asset?
Always enter current market value — what your holdings are worth today, not what you paid for them. The chart measures current allocation and concentration risk based on present portfolio composition. Cost basis is relevant for tax calculations but not for allocation analysis.
Q: How often should I rebalance my portfolio?
Research from Vanguard and Morningstar consistently shows annual rebalancing produces optimal risk-adjusted outcomes for most investors. Quarterly rebalancing increases transaction costs without meaningfully improving results. A threshold-based approach — rebalancing when any asset drifts more than 5–10% from its target — is equally effective and requires fewer transactions than calendar-based rebalancing.
Q: What is a safe maximum allocation for Crypto?
Most institutional frameworks cap speculative alternatives — including crypto — at 5–10% of total portfolio value for aggressive investors, and 0–2% for conservative or moderate ones. Above 10%, crypto's high volatility (annualized standard deviation of 60–80%) dominates overall portfolio risk regardless of how well other assets are diversified.
Q: Is holding cash in a portfolio a good or bad thing?
A 5–10% cash allocation serves as a liquidity buffer for rebalancing and opportunity deployment — not a drag on performance. Cash above 20% of portfolio value in a low-interest environment represents an opportunity cost problem: inflation erodes purchasing power faster than cash yields grow it. The chart flags cash above 20% as a signal to review deployment into productive assets.
Q: What does a high HHI score mean for my portfolio?
A high HHI score means your portfolio is concentrated in one or two asset classes, exposing you to the specific risks of those assets without the volatility-dampening effect of uncorrelated holdings. A portfolio with 80% in Stocks has an HHI of 6,400 — highly concentrated. Adding Bonds and Real Estate pulls the HHI below 2,500, significantly reducing drawdown risk in equity bear markets.
Q: Should Real Estate include my primary residence?
Financial planners differ on this. Including your home inflates Real Estate allocation and distorts your investable portfolio picture since your primary residence is illiquid and not income-producing in the same way as an investment property or REIT. For portfolio allocation purposes, enter only investment real estate — REITs, rental properties, or property funds — and track your primary residence separately.
Q: What is the difference between asset allocation and diversification?
Asset allocation is the percentage split between broad asset classes — Stocks, Bonds, Crypto, Real Estate, Cash. Diversification is the spread within each class — owning 500 stocks across sectors rather than 3 tech stocks. This chart measures allocation. Diversification within each class depends on what you hold inside each category and requires separate analysis.