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Why it matters
The overlooked end of the London market. Benchmark collections are a clean way to compare market leaders, index heavyweights and size segments without building a screen from scratch.
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UK Smaller Companies
The overlooked end of the London market.
Britain’s smaller quoted companies are under-researched, thinly traded and periodically the source of the market’s best returns — and its worst. This collection covers LSE-listed operating companies between roughly $60m and $900m, with closed-end funds and investment trusts filtered out so what remains is real businesses. Expect sparse fundamentals at this size, and read the Risk rating first.
What to check next
Compare sector mix, valuation, quality and risk across the group rather than assuming larger companies are automatically safer.
Main risk
Large benchmark names can become crowded, expensive or overly exposed to one macro factor despite appearing diversified at first glance.
Showing the 40 largest of 390 — sort or filter to explore the rest.
- RewardRiskYield0.0%
- RewardRisk
- RewardRisk
- RewardRiskYield2.2%
- RewardRisk
- RewardRisk
- RewardRiskYield3.9%
- RewardRisk
- RewardRiskYield5.0%
- RewardRiskYield8.1%
- RewardRiskYield6.3%
- RewardRiskYield0.7%
- RewardRiskYield0.7%
- RewardRiskYield2.7%
- RewardRiskYield1.0%
- RewardRisk
- RewardRisk
- RewardRiskYield3.5%
- RewardRiskYield4.5%
- RewardRisk
- RewardRiskYield2.6%
- RewardRisk
- RewardRiskYield3.4%
- RewardRiskYield1.6%
- RewardRiskYield3.6%
- RewardRiskYield3.5%
- RewardRiskYield1.5%
- RewardRiskYield1.4%
- RewardRisk
- RewardRisk
- RewardRiskYield3.7%
- RewardRisk
- RewardRisk
- RewardRisk
- RewardRiskYield7.1%
- RewardRiskYield4.6%
- RewardRiskYield2.5%
- RewardRisk
- RewardRiskYield0.0%
- RewardRisk
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Frequently asked questions
What is the UK Smaller Companies collection?
The overlooked end of the London market. It currently holds 390 stocks, each rated by Openbook's Reward and Risk scores. Britain’s smaller quoted companies are under-researched, thinly traded and periodically the source of the market’s best returns — and its worst.
How are UK Smaller Companies stocks selected?
Constituents are chosen by a rules-based screen over the full UK common-stock universe, then ranked by market capitalisation.
How often is the UK Smaller Companies list updated?
It is rebuilt from live market data, so the constituents and their rankings update as prices and company fundamentals change — there is no fixed, hand-edited list.
How should I use the Reward and Risk ratings?
Openbook's Reward rating combines a stock's growth, momentum, profitability and valuation into a single 0–100 score, and the Risk rating scores financial strength, volatility and size. Use them to compare names within this theme — broadly, a higher Reward alongside a lower Risk is more attractive. They are quantitative research signals, not investment advice.
Openbook Reward and Risk ratings and factor scores are quantitative signals for research, not investment advice. Data may be delayed. Some US-listed names carry partial factor coverage.