The Portfolio Health Score: A 0-100 Framework for Assessing Your Angel Portfolio
How healthy is your angel portfolio? Most investors answer this question with a vague sense of optimism or concern, based on whichever investment they thought about most recently. A more useful approach is a structured health score that evaluates your portfolio across the dimensions that actually predict long-term outcomes.
The Portfolio Health Score is a composite metric that rates your angel portfolio from 0 to 100 across three weighted components: performance (40 percent), diversification (40 percent), and activity (20 percent). This framework provides a quick, reliable read on your portfolio's overall condition and highlights specific areas that need attention.
Why a Composite Score Matters
Individual metrics tell individual stories. Your MOIC tells you about returns. Your HHI tells you about concentration. Your activity log tells you about engagement. But none of these metrics alone captures the full picture.
A portfolio can show strong MOIC while being dangerously concentrated in a single investment. It can be well-diversified while showing declining performance. It can have great metrics across the board while the investor has not engaged with portfolio companies in months.
The health score combines these dimensions into a single number that serves as a starting point for deeper analysis. A score of 85 means your portfolio is in good shape across all dimensions. A score of 45 means something needs attention, and the component breakdown tells you exactly where.
Component 1: Performance (40% Weight)
Performance measures the financial outcomes of your portfolio. It is the most intuitive component but only receives 40 percent weight because strong performance built on concentration or disengagement is fragile.
What Gets Scored
Portfolio MOIC. Your overall multiple on invested capital across all investments. Scores range from low (below 1.0x, meaning you are underwater) to high (above 3.0x, indicating strong performance).
Distribution of returns. A portfolio where 5 out of 20 investments are driving all the returns scores differently than one where returns are distributed across many investments. Broader return distribution indicates more consistent deal selection.
Trajectory. Is your portfolio MOIC improving, stable, or declining? Portfolios on an upward trajectory score higher than those that have plateaued or are declining, even if the absolute MOIC is similar.
Scoring Scale (0-40 Points)
- 35-40: Portfolio MOIC above 3x with improving trajectory
- 25-34: Portfolio MOIC 2-3x with stable or improving trajectory
- 15-24: Portfolio MOIC 1-2x
- 5-14: Portfolio MOIC 0.5-1x
- 0-4: Portfolio MOIC below 0.5x
What This Component Misses
Performance scoring based on current valuations includes unrealized gains that may not materialize. A portfolio with a high MOIC driven by a single unrealized markup carries more risk than one with similar MOIC driven by multiple realized exits.
Component 2: Diversification (40% Weight)
Diversification measures how well your portfolio is positioned to weather adverse outcomes. It receives equal weight to performance because a concentrated portfolio is a fragile portfolio, regardless of current returns.
What Gets Scored
Position concentration (HHI). The Herfindahl-Hirschman Index measures how concentrated your portfolio is across individual investments. Lower HHI (below 1,500) indicates healthy diversification. Higher HHI (above 2,500) indicates dangerous concentration.
Sector distribution. How many distinct sectors are represented in your portfolio? A portfolio with investments across 4 or more sectors scores higher than one concentrated in a single sector.
Stage distribution. Portfolios that span multiple entry stages (pre-seed, seed, post-seed) are more resilient than those concentrated at a single stage. Each stage responds differently to market conditions.
Vintage year spread. Portfolios deployed across multiple years are less exposed to vintage year risk, the possibility that all investments entered at unfavorable valuations.
Scoring Scale (0-40 Points)
- 35-40: HHI below 1,000, 4+ sectors, 3+ stages, 3+ vintage years
- 25-34: HHI 1,000-1,500, 3+ sectors, adequate stage and year spread
- 15-24: HHI 1,500-2,500, some sector and stage diversity
- 5-14: HHI above 2,500, limited diversity across dimensions
- 0-4: Extreme concentration in a single position, sector, or vintage year
Why Diversification Gets Equal Weight
Angel investing is governed by power law returns. Diversification increases the probability of capturing the rare outlier returns that drive portfolio performance. A well-diversified portfolio with moderate performance has better expected future returns than a concentrated portfolio with high current performance.
Component 3: Activity (20% Weight)
Activity measures how engaged you are with your portfolio. Disengaged investors miss follow-on opportunities, fail to identify problems early, and lack the information needed for good decision-making.
What Gets Scored
Update frequency. How often are you updating investment data? Active investors update valuations, log activities, and maintain current records. Stale data suggests disengagement.
Communication cadence. Are you maintaining regular contact with portfolio companies? Investors who log activities (meetings, calls, emails, notes) at least quarterly for each investment score higher.
Portfolio review recency. When did you last review your portfolio as a whole? Recent reviews indicate active management. Portfolios that have not been reviewed in months indicate neglect.
Scoring Scale (0-20 Points)
- 17-20: Regular updates, quarterly contact with all companies, recent portfolio review
- 12-16: Most investments updated regularly, some communication gaps
- 7-11: Sporadic updates, several investments without recent activity
- 3-6: Most investments have stale data, minimal engagement
- 0-2: Portfolio data significantly outdated, no recent activity
Why Activity Gets Lower Weight
Activity is important but less deterministic than performance and diversification. An investor can be highly active with a poorly performing, concentrated portfolio. Conversely, a well-constructed, diversified portfolio can survive periods of lower engagement. Activity receives 20 percent weight because it supports rather than drives long-term outcomes.
Interpreting Your Score
80-100: Excellent
Your portfolio demonstrates strong performance, healthy diversification, and active management. Focus on maintaining current practices and looking for optimization opportunities.
60-79: Good
Your portfolio is fundamentally sound with room for improvement in one or two components. The component breakdown identifies where to focus. Typical profile: strong performance or diversification with one weaker area.
40-59: Needs Attention
One or more components are significantly below target. Common scenarios include concentration risk building silently, declining performance, or disengagement from portfolio management. Identify the lowest-scoring component and prioritize improvement.
Below 40: Action Required
Multiple components are underperforming. This typically indicates a portfolio that needs structural changes: rebalancing concentration, addressing performance issues, or recommitting to active management.
Using the Score for Decision-Making
Monthly Check
A quick monthly review of your health score identifies trends before they become problems. A score that drops from 72 to 65 over two months signals that something has changed and warrants investigation.
Portfolio Construction
When evaluating new investments, consider how they would affect your health score. An investment that improves diversification (new sector, different stage) adds portfolio-level value beyond its individual return potential.
Annual Strategy Review
Compare your health score trajectory over the year. Improving scores indicate that your investment process is strengthening. Declining scores, even with strong performance, suggest emerging risks.
Platforms like AngelHub calculate portfolio health scores automatically, breaking down each component and tracking changes over time so you can focus on interpreting the score rather than calculating it.
Conclusion
The Portfolio Health Score provides a structured, repeatable way to assess your angel portfolio's overall condition. By weighting performance, diversification, and activity in proportion to their impact on long-term outcomes, the framework highlights both strengths and vulnerabilities. The score is not a prediction of future returns. It is a diagnostic tool that helps you identify where your portfolio is strong, where it is vulnerable, and where your attention will have the most impact.
Frequently Asked Questions
How often should I check my Portfolio Health Score?
Monthly checks are ideal for identifying trends. Quarterly deep dives into component-level details help guide strategic decisions. Avoid checking more frequently, as short-term fluctuations in scores create noise rather than signal.
What is a good target health score for a new angel investor?
New investors with fewer than 10 investments should target a score above 50, with a focus on the diversification component. As the portfolio matures and generates performance data, the target should rise to 70 or above.
Can my health score decrease even if my investments are performing well?
Yes. If strong performance concentrates your portfolio in a few winners, the diversification component will decrease. If you become less engaged with portfolio management, the activity component will decrease. The score is designed to capture these dynamics.
Should I prioritize improving the lowest component?
Generally yes. The component scoring lowest typically represents the greatest risk to your portfolio. However, if the activity component is low, addressing it first often improves the other components because active management leads to better data, which improves both performance tracking and diversification analysis.