Free Tool

Portfolio Concentration
Risk Calculator

Analyze your portfolio's concentration risk and see where you stand against diversification best practices.

Largest Single Holding 0%
Your largest individual stock, fund, or position. Target: ≤10%
Top 5 Holdings Combined 0%
Sum of your five largest positions. Target: ≤40%
Largest Sector Exposure 0%
Largest allocation to one sector (e.g. technology, healthcare). Target: ≤25%
Geographic Concentration 0%
Percentage of portfolio in U.S.-based assets. Target: ≤80%
Employer Stock 0%
RSUs, ESPPs, stock options, or direct employer stock. Target: ≤10%
● Stocks & Bonds 70%
Equities and fixed income investments
● Real Estate 15%
REITs, rental properties, real estate funds. Typically 5–20% of portfolio.
● Alternatives 10%
Commodities, crypto, hedge funds, private equity. Usually under 10%.
● Cash 5%
Money market funds, savings accounts, CDs. Emergency fund plus investment cash.
Total Allocation: 100%
0 RISK SCORE
Diversification
/ 100
Risk Factors
flagged
Largest Single Holding
Target: ≤10%
Top 5 Holdings
Target: ≤40%
Sector Concentration
Target: ≤25%
Geographic Concentration
Target: ≤80% U.S.
Employer Stock
Target: ≤10%
Alternative Assets
Target: ≤10%

Enter your portfolio details on the left to see your personalized risk analysis.

Understanding Concentration Risk

Why diversification matters.

What is concentration risk?

Concentration risk is what happens when a large portion of your portfolio rides on a single stock, sector, or region. The more concentrated your holdings, the more exposed you are to a single bad outcome.

Why spreading out matters

A well-diversified portfolio can smooth out the impact of any one holding underperforming. The goal is not to eliminate risk entirely, but to make sure no single bet can sink the ship.

Where to start

Reducing concentration does not require a complete overhaul. Trimming outsized positions over time, filling gaps in underrepresented areas, and reviewing sector exposure can move the needle meaningfully.

This calculator evaluates portfolio concentration risk by analyzing the distribution of holdings across individual positions, sectors, asset classes, and geographic regions. The risk score (0–100) uses weighted factors: largest single holding (max 25 points), top 5 individual holdings (max 18 points), sector concentration (max 18 points), geographic concentration (max 9 points), employer stock (max 24 points), and alternative assets (max 6 points). Risk thresholds are based on financial planning best practices: individual holdings should not exceed 10% of portfolio, top 5 holdings under 40%, sector exposure under 25%, and employer stock under 10%. This calculator is for educational purposes only and does not constitute personalized investment advice. Optimal portfolio allocation varies based on age, timeline, risk tolerance, tax situation, and financial goals. This tool should be used as a starting point for discussion with a qualified financial advisor.

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