The Risk Report flags portfolios where a single sector — energy, tech, financials — exceeds a concentration threshold. This is one of the simplest, highest-value rules on the system, and the one most users are quietly tripping without knowing. This article explains the rule, the threshold, and what action the report actually recommends.

The Rule in One Sentence

If any single sector accounts for more than 40% of portfolio market value, the Risk Report marks the portfolio as sector-concentrated and surfaces the offending sector in the risk card. The number is deliberately generous — below 40% is "normal tilt"; above 40% is "you are making a sector bet whether you meant to or not."

<25%
Diversified
No single sector dominates. Sector moves matter at the margin but do not dictate portfolio outcome.
25-40%
Tilted
Top sector has weight. Intentional if you believe the sector; a problem if you accumulated it passively without noticing.
>40%
Concentrated
Rule fires. One sector move of -20% wipes out ~8% of total portfolio value on its own. Not a diversified book anymore.

Why Sector Concentration Hides in Dividend Portfolios

Dividend-focused investors are the group most often caught by this rule. The reason is simple: many of the highest-yield names cluster in the same 2-3 sectors — energy, utilities, REITs, and telecoms. Build a portfolio by picking "safe high-yield names" one at a time and you can end up 70% energy without ever deciding to be an energy investor.

The same effect hits tech-focused growth portfolios: FAANG + the usual semis and software names share a lot of correlated risk even though they look like different tickers.

The rule is not telling you sector concentration is wrong. It is telling you the concentration exists — so you can decide whether it is a thesis you hold deliberately, or an accident of how you added positions.

What the Report Recommends

When the rule fires, the Risk Report card shows:

  • The offending sector and its total % of portfolio value.
  • The top 3 contributing tickers so you know which positions are driving the concentration.
  • A suggested hedge or trim direction — e.g. "consider reducing XLE-adjacent names or adding exposure to XLU / XLP" — framed as a prompt, not a prescription.

Single sector > 40% of portfolio = rule fires
Dividend investors cluster silently in energy / utilities / REITs
Report tells you the sector, the top contributors, and a trim direction

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