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How to review portfolio concentration
Research a companyCounting ticker names is different from measuring exposure. Start with position values, then ask whether several businesses depend on the same customers, rates or spending cycle.
By ScalarQuant · Published · Updated
Open the app and choose Portfolio. Review current position values and cash, then compare them with your complete account records.
Your starting point: State the denominator when discussing a position’s weight. A holdings view reveals position size but cannot measure every shared risk or the rest of your finances.
Choose and label the denominator
A position's weight compares its market value with a stated total. That total might be invested stock holdings, one account including cash, or all investment assets across accounts. Those are different views and produce different percentages.
Use current values from the same date and currency where possible. Check whether all holdings have valid prices. If a major position is missing, a percentage of the available subset can overstate or understate concentration.
Investor.gov's allocation and diversification guide discusses spreading exposure across and within assets. Diversification does not guarantee protection from losses, and the appropriate mix depends on personal circumstances rather than a universal percentage limit.
Compare stock-only and account weights
| Holding | Value |
|---|---|
| Company A | $600 |
| Company B | $300 |
| Company C | $100 |
| Cash | $200 |
Invested stock value is $1,000; current account value including cash is $1,200. A is 600 ÷ 1,000 = 60% of stocks, but 600 ÷ 1,200 = 50% of the account. Both statements are correct when their denominators are clear.
If A and B depend on the same fictional spending cycle, together they represent 90% of stock value and 75% of this account. That is an exposure question to investigate, not a calculated correlation or prediction of losses.
Adding a fourth ticker with the same underlying driver could leave that dependence intact. The number of lines in a portfolio does not fully describe its risk.
Look for shared business drivers
Review sector, geography, revenue currency, key customers and financing needs in issuer disclosures. Several companies may all depend on advertising demand, a single commodity price or the same technology-investment cycle.
Fund holdings can overlap with direct stocks. Assets in other accounts, employer stock, liabilities and future cash needs may also change the overall picture. A list of positions in one app cannot automatically see those exposures.
Past price co-movement is a different analysis from shared business dependence, and either can change. Do not describe a company label or sector category as a complete risk estimate. Keep the source for each exposure claim in your note.
Use Portfolio as a review starting point
In ScalarQuant, choose Portfolio, review the position values and the separate Cash balance, and confirm that your records are complete. Open a company to check the business behind a large position. See cost basis versus market value before treating recorded gains as performance.
The historical holdings chart excludes cash; use current holdings plus cash when reviewing this account's present size. Record other accounts and fund overlaps outside the app. The current guide does not promise automatic fund look-through or a complete risk model.
Finish with “My largest recorded exposure is ___ under this denominator; a shared driver may be ___; missing information is ___.” Use that note to decide which evidence to research next rather than treating an example weight as an instruction to rebalance.
Review the exposures you actually hold
Open Portfolio, check the recorded holdings and current cash, and identify the largest current values. Keep a separate note of shared business exposures and assets outside ScalarQuant before deciding what needs further review.
Research a companyEducational information, not personalized investment advice or a forecast. ScalarQuant is in beta. Sources and dates matter; investing can result in losses.