^AIM5.L

FTSE AIM UK 50
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Top FTSE AIM UK 50 Companies by Market Cap and Stocks in 2025

This is the list of the largest public listed companies in the FTSE AIM UK 50 index ranked by market capitalization, together with links to their reference stock, sector and industry.

FTSE AIM UK 50 Chart & Analysis

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Top FTSE AIM UK 50 Companies Ranking by Market Cap as of Jan. 1, 2025

Ranking Company Stock Market Cap (USD) Country Sector Industry
1 Jet2 plc JET2 wb_incandescent $3.95 B United Kingdom UK Consumer Discretionary UK Travel Services
2 Abcam plc ABC wb_incandescent $3.58 B

(Dec. 1, 2022)

 United Kingdom UK Healthcare UK Biotechnology
3 Keywords Studios plc KWS wb_incandescent $2.42 B

(July 1, 2024)

 Ireland Irish Communication Services Irish Electronic Gaming & Multimedia
4 Secure Income REIT Ord SIR wb_incandescent $1.81 B

(July 1, 2022)

 United Kingdom UK Real Estate UK REIT—Diversified
5 Blue Prism Group plc PRSM wb_incandescent $1.66 B

(March 1, 2022)

 United Kingdom UK Technology UK Software—Infrastructure
6 Smart Metering Systems plc SMS wb_incandescent $1.65 B

(Jan. 1, 2024)

 United Kingdom UK Industrials UK Electrical Equipment & Parts
7 Clinigen Group plc CLIN wb_incandescent $1.61 B

(April 1, 2022)

 United Kingdom UK Healthcare UK Medical Distribution
8 Gamma Communications plc GAMA wb_incandescent $1.60 B United Kingdom UK Communication Services UK Telecom Services
9 Sumo Group plc SUMO wb_incandescent $1.18 B

(Jan. 1, 2022)

 United Kingdom UK Communication Services UK Electronic Gaming & Multimedia
10 GB Group plc GBG wb_incandescent $1.14 B

(July 1, 2024)

 United Kingdom UK Technology UK Software—Application
11 EMIS Group plc EMIS wb_incandescent $1.13 B

(July 1, 2023)

 United Kingdom UK Healthcare UK Health Information Services
12 CareTech Holdings plc CTH wb_incandescent $978.5 M

(Sept. 1, 2022)

 United Kingdom UK Healthcare UK Medical Care Facilities
13 Fevertree Drinks plc FEVR wb_incandescent $975.7 M United Kingdom UK Consumer Staples UK Beverages—Non-Alcoholic
14 Learning Technologies Group plc LTG wb_incandescent $961.5 M United Kingdom UK Consumer Staples UK Education & Training Services
15 James Halstead plc JHD wb_incandescent $961.3 M United Kingdom UK Industrials UK Building Products & Equipment
16 Renew Holdings plc RNWH wb_incandescent $913.9 M United Kingdom UK Industrials UK Engineering & Construction
17 CVS Group plc CVSG wb_incandescent $836.4 M United Kingdom UK Consumer Discretionary UK Personal Services
18 Pan African Resources plc PAF wb_incandescent $822.6 M South Africa South African Basic Materials South African Gold
19 Serica Energy plc SQZ wb_incandescent $771.6 M United Kingdom UK Energy UK Oil & Gas E&P
20 RWS Holdings plc RWS wb_incandescent $754.4 M United Kingdom UK Industrials UK Consulting Services
21 Johnson Service Group plc JSG wb_incandescent $701.4 M United Kingdom UK Industrials UK Specialty Business Services
22 Draper Esprit plc GROW wb_incandescent $694.5 M United Kingdom UK Financials UK Asset Management
23 FD Technologies plc FDP wb_incandescent $684.7 M United Kingdom UK Technology UK Information Technology Services
24 Volex plc VLX wb_incandescent $684.2 M United Kingdom UK Industrials UK Electrical Equipment & Parts
25 M.P. Evans Group plc MPE wb_incandescent $640.4 M United Kingdom UK Consumer Staples UK Farm Products
26 Polar Capital Holdings plc POLR wb_incandescent $612.3 M United Kingdom UK Financials UK Asset Management
27 ASOS plc ASC wb_incandescent $610.2 M United Kingdom UK Consumer Discretionary UK Internet Retail
28 Advanced Medical Solutions Group plc AMS wb_incandescent $600.9 M United Kingdom UK Healthcare UK Medical Instruments & Supplies
29 Nichols plc NICL wb_incandescent $593.8 M United Kingdom UK Consumer Staples UK Beverages—Non-Alcoholic
30 Silence Therapeutics plc SLN wb_incandescent $588.4 M

(Nov. 1, 2021)

 United Kingdom UK Healthcare UK Biotechnology

Top FTSE AIM UK 50 Companies Ranking by Market Cap as of Jan. 1, 2025

1. Jet2 plc

Company Profile: Jet2 plc
Market Cap (USD): $3.95 B
Stock: JET2 wb_incandescent
Country: United Kingdom
Sector: UK Consumer Discretionary
Industry: UK Travel Services

2. Abcam plc

Company Profile: Abcam plc
Market Cap (USD): $3.58 B (Dec. 1, 2022)
Stock: ABC wb_incandescent
Country: United Kingdom
Sector: UK Healthcare
Industry: UK Biotechnology

3. Keywords Studios plc

Company Profile: Keywords Studios plc
Market Cap (USD): $2.42 B (July 1, 2024)
Stock: KWS wb_incandescent
Country: Ireland
Sector: Irish Communication Services
Industry: Irish Electronic Gaming & Multimedia

4. Secure Income REIT Ord

Company Profile: Secure Income REIT Ord
Market Cap (USD): $1.81 B (July 1, 2022)
Stock: SIR wb_incandescent
Country: United Kingdom
Sector: UK Real Estate
Industry: UK REIT—Diversified

5. Blue Prism Group plc

Company Profile: Blue Prism Group plc
Market Cap (USD): $1.66 B (March 1, 2022)
Stock: PRSM wb_incandescent
Country: United Kingdom
Sector: UK Technology
Industry: UK Software—Infrastructure

6. Smart Metering Systems plc

Company Profile: Smart Metering Systems plc
Market Cap (USD): $1.65 B (Jan. 1, 2024)
Stock: SMS wb_incandescent
Country: United Kingdom
Sector: UK Industrials
Industry: UK Electrical Equipment & Parts

7. Clinigen Group plc

Company Profile: Clinigen Group plc
Market Cap (USD): $1.61 B (April 1, 2022)
Stock: CLIN wb_incandescent
Country: United Kingdom
Sector: UK Healthcare
Industry: UK Medical Distribution

8. Gamma Communications plc

Company Profile: Gamma Communications plc
Market Cap (USD): $1.60 B
Stock: GAMA wb_incandescent
Country: United Kingdom
Sector: UK Communication Services
Industry: UK Telecom Services

9. Sumo Group plc

Company Profile: Sumo Group plc
Market Cap (USD): $1.18 B (Jan. 1, 2022)
Stock: SUMO wb_incandescent
Country: United Kingdom
Sector: UK Communication Services
Industry: UK Electronic Gaming & Multimedia

10. GB Group plc

Company Profile: GB Group plc
Market Cap (USD): $1.14 B (July 1, 2024)
Stock: GBG wb_incandescent
Country: United Kingdom
Sector: UK Technology
Industry: UK Software—Application

11. EMIS Group plc

Company Profile: EMIS Group plc
Market Cap (USD): $1.13 B (July 1, 2023)
Stock: EMIS wb_incandescent
Country: United Kingdom
Sector: UK Healthcare
Industry: UK Health Information Services

12. CareTech Holdings plc

Company Profile: CareTech Holdings plc
Market Cap (USD): $978.5 M (Sept. 1, 2022)
Stock: CTH wb_incandescent
Country: United Kingdom
Sector: UK Healthcare
Industry: UK Medical Care Facilities

13. Fevertree Drinks plc

Company Profile: Fevertree Drinks plc
Market Cap (USD): $975.7 M
Stock: FEVR wb_incandescent
Country: United Kingdom
Sector: UK Consumer Staples
Industry: UK Beverages—Non-Alcoholic

14. Learning Technologies Group plc

Company Profile: Learning Technologies Group plc
Market Cap (USD): $961.5 M
Stock: LTG wb_incandescent
Country: United Kingdom
Sector: UK Consumer Staples
Industry: UK Education & Training Services

15. James Halstead plc

Company Profile: James Halstead plc
Market Cap (USD): $961.3 M
Stock: JHD wb_incandescent
Country: United Kingdom
Sector: UK Industrials
Industry: UK Building Products & Equipment

16. Renew Holdings plc

Company Profile: Renew Holdings plc
Market Cap (USD): $913.9 M
Stock: RNWH wb_incandescent
Country: United Kingdom
Sector: UK Industrials
Industry: UK Engineering & Construction

17. CVS Group plc

Company Profile: CVS Group plc
Market Cap (USD): $836.4 M
Stock: CVSG wb_incandescent
Country: United Kingdom
Sector: UK Consumer Discretionary
Industry: UK Personal Services

18. Pan African Resources plc

Company Profile: Pan African Resources plc
Market Cap (USD): $822.6 M
Stock: PAF wb_incandescent
Country: South Africa
Sector: South African Basic Materials
Industry: South African Gold

19. Serica Energy plc

Company Profile: Serica Energy plc
Market Cap (USD): $771.6 M
Stock: SQZ wb_incandescent
Country: United Kingdom
Sector: UK Energy
Industry: UK Oil & Gas E&P

20. RWS Holdings plc

Company Profile: RWS Holdings plc
Market Cap (USD): $754.4 M
Stock: RWS wb_incandescent
Country: United Kingdom
Sector: UK Industrials
Industry: UK Consulting Services

21. Johnson Service Group plc

Company Profile: Johnson Service Group plc
Market Cap (USD): $701.4 M
Stock: JSG wb_incandescent
Country: United Kingdom
Sector: UK Industrials
Industry: UK Specialty Business Services

22. Draper Esprit plc

Company Profile: Draper Esprit plc
Market Cap (USD): $694.5 M
Stock: GROW wb_incandescent
Country: United Kingdom
Sector: UK Financials
Industry: UK Asset Management

23. FD Technologies plc

Company Profile: FD Technologies plc
Market Cap (USD): $684.7 M
Stock: FDP wb_incandescent
Country: United Kingdom
Sector: UK Technology
Industry: UK Information Technology Services

24. Volex plc

Company Profile: Volex plc
Market Cap (USD): $684.2 M
Stock: VLX wb_incandescent
Country: United Kingdom
Sector: UK Industrials
Industry: UK Electrical Equipment & Parts

25. M.P. Evans Group plc

Company Profile: M.P. Evans Group plc
Market Cap (USD): $640.4 M
Stock: MPE wb_incandescent
Country: United Kingdom
Sector: UK Consumer Staples
Industry: UK Farm Products

26. Polar Capital Holdings plc

Company Profile: Polar Capital Holdings plc
Market Cap (USD): $612.3 M
Stock: POLR wb_incandescent
Country: United Kingdom
Sector: UK Financials
Industry: UK Asset Management

27. ASOS plc

Company Profile: ASOS plc
Market Cap (USD): $610.2 M
Stock: ASC wb_incandescent
Country: United Kingdom
Sector: UK Consumer Discretionary
Industry: UK Internet Retail

28. Advanced Medical Solutions Group plc

Company Profile: Advanced Medical Solutions Group plc
Market Cap (USD): $600.9 M
Stock: AMS wb_incandescent
Country: United Kingdom
Sector: UK Healthcare
Industry: UK Medical Instruments & Supplies

29. Nichols plc

Company Profile: Nichols plc
Market Cap (USD): $593.8 M
Stock: NICL wb_incandescent
Country: United Kingdom
Sector: UK Consumer Staples
Industry: UK Beverages—Non-Alcoholic

30. Silence Therapeutics plc

Company Profile: Silence Therapeutics plc
Market Cap (USD): $588.4 M (Nov. 1, 2021)
Stock: SLN wb_incandescent
Country: United Kingdom
Sector: UK Healthcare
Industry: UK Biotechnology

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