Most stock screens rank companies across the whole market. That sounds thorough. In practice it mostly ranks industries, and the list that comes out tells you which sectors have a high base rate on a metric, not which companies are good at what they do.
What a market-wide sort really shows
Sort every US-listed company by revenue growth and the top decile fills with software and biotech. Sort by dividend yield and it fills with REITs and pipelines. Sort by leverage and utilities sink to the bottom. None of this is new information. It is the shape of the economy, repeated every time you run the screen.
Ranking inside the sector first
Rank the same metric only among a company's sector peers and the industry base rate disappears. A utility in the top quartile of utilities on interest coverage is genuinely safe for a utility. A software company in the bottom quartile of software on gross margin is genuinely weak for software, even if its margin would look fine next to a grocer. The rank now describes the company rather than its neighborhood.
Why the order of operations matters for a total
Once every input is a within-sector percentile, the inputs can be averaged without one metric dominating because of its scale, and totals can be compared across sectors. A 90 in banks and a 90 in semiconductors both mean top decile of their own group. That is the property a single 0-100 number needs before it is worth publishing at all.
A practical habit
Before acting on any ranked list, ask which sectors dominate the top decile. If the answer is one or two, the list is ranking sectors. Re-run it inside the sector you actually care about and see whether the same names survive.
The ranking step, the five pillars and the calculation dates behind MoonshotScore are documented on the Stock Expert AI methodology page, and live scores are at www.stockexpertai.com.
This is educational content, not investment advice. Past performance does not guarantee future results.
No comments:
Post a Comment