ATLASUnited Kingdom stock market — top companies & ATLAS outlook
ATLAS tracks 651 stocks listed in the United Kingdom. The largest by market value is HSBC (HSBA.LSE) at $301B, followed by AstraZeneca and Shell.
Updated Nov 6, 2026. Educational information, not investment advice.
Live price, market value and ATLAS fair value for the largest companies listed in the United Kingdom. Figures match what ATLAS shows on each stock's page and update roughly every few hours.
Biggest movers today
Today's biggest gains and falls among the largest United Kingdom companies.
Largest United Kingdom companies
| # | Company | Price | 1-day | Market cap | Vs ATLAS fair value |
|---|---|---|---|---|---|
| 1 | HSBA.LSE HSBC | £13.05 | -0.2% | $301B | 11% below fair value |
| 2 | AZN.LSE AstraZeneca | £139.30 | -0.8% | $289B | 8% above fair value |
| 3 | SHEL.LSE Shell | £37.23 | -1.6% | $282B | 22% below fair value |
| 4 | BP-A.LSE BP | £1.41 | +2.9% | — | 66% below fair value |
| 5 | ULVR.LSE Unilever | £49.30 | -2.0% | $142B | 21% above fair value |
| 6 | RR.LSE Rolls-Royce | £12.61 | +1.7% | $137B | about fair value |
| 7 | BATS.LSE British American Tobacco | £45.67 | -3.2% | $131B | about fair value |
| 8 | BP.LSE BP | £5.59 | -1.4% | $115B | 26% below fair value |
| 9 | RIO.LSE Rio Tinto | £62.81 | +0.2% | $106B | about fair value |
| 10 | GSK.LSE GSK | £18.90 | 0.0% | $102B | 38% below fair value |
Ranked by market value, largest first. Price is in local currency; market value is in USD. The gap to fair value is a model estimate, not a price target.
United Kingdom stocks — common questions
What are the biggest United Kingdom stocks?
The largest United Kingdom companies ATLAS tracks are HSBC (HSBA.LSE), AstraZeneca and Shell, ranked by market capitalisation in USD.
Does ATLAS cover United Kingdom stocks?
Yes. ATLAS tracks 651 stocks listed in the United Kingdom, with price, market value and a fair-value estimate for each, alongside 19,000+ stocks worldwide.
What is ATLAS fair value?
ATLAS estimates a fair value for each company and shows how far the current price sits above or below it. It is a model estimate, not a price target or investment advice.
Track United Kingdom stocks on ATLAS — probability, fair value and earnings for HSBA.LSE, AZN.LSE and 19,000+ more.
Open ATLAS free →ATLAS is educational information, not investment advice. Fair value and probability are model estimates, not forecasts or recommendations. Figures update roughly every few hours.