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Top FTSE AIM All-Share Companies by Market Cap and Stocks in 2026

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

FTSE AIM All-Share Chart & Analysis

Top FTSE AIM All-Share Companies Ranking by Market Cap as of Jan. 1, 2026

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Ranking Company Stock Market Cap (USD) Country Sector Industry
1 Caspian Sunrise plc CASP $9.99 B United Kingdom UK Energy UK Oil & Gas E&P
2 Greatland Gold plc GGP $4.63 B United Kingdom UK Basic Materials UK Gold
3 Jet2 plc JET2 $3.56 B United Kingdom UK Consumer Discretionary UK Travel Services
4 Pan African Resources plc PAF $2.91 B South Africa South African Basic Materials South African Gold
5 Keywords Studios plc KWS $2.42 B

(July 1, 2024)

 Ireland Irish Communication Services Irish Electronic Gaming & Multimedia
6 HUTCHMED Ltd. HCM $2.36 B Hong Kong HK Healthcare HK Biotechnology
7 Burford Capital Limited BUR $1.93 B United Kingdom UK Financials UK Asset Management
8 Yellow Cake plc YCA $1.93 B United Kingdom UK Energy UK Uranium
9 SigmaRoc plc SRC $1.89 B United Kingdom UK Basic Materials UK Building Materials
10 Fevertree Drinks plc FEVR $1.26 B United Kingdom UK Consumer Staples UK Beverages—Non-Alcoholic
11 CVS Group plc CVSG $1.22 B United Kingdom UK Consumer Discretionary UK Personal Services
12 Northamber plc NAR $1.20 B United Kingdom UK Technology UK Electronics & Computer Distribution
13 Gamma Communications plc GAMA $1.13 B United Kingdom UK Communication Services UK Telecom Services
14 GlobalData plc DATA $1.12 B United Kingdom UK Industrials UK Consulting Services
15 Uniphar plc UPR $1.06 B Ireland Irish Healthcare Irish Medical Care Facilities
16 Volex plc VLX $1.02 B United Kingdom UK Industrials UK Electrical Equipment & Parts
17 Learning Technologies Group plc LTG $961.5 M

(Jan. 1, 2025)

 United Kingdom UK Consumer Staples UK Education & Training Services
18 Renew Holdings plc RNWH $945.8 M United Kingdom UK Industrials UK Engineering & Construction
19 Serica Energy plc SQZ $937.6 M United Kingdom UK Energy UK Oil & Gas E&P
20 Craneware plc CRW $912.8 M United Kingdom UK Healthcare UK Health Information Services
21 Greencoat Renewables plc GRP $911.3 M Ireland Irish Utilities Irish Utilities—Independent Power Producers
22 M.P. Evans Group plc MPE $885.7 M United Kingdom UK Consumer Staples UK Farm Products
23 Boku, Inc. BOKU $885.0 M United States US Technology US Information Technology Services
24 SEEEN plc SEEN $840.1 M United Kingdom UK Technology UK Software—Application
25 GB Group plc GBG $784.7 M United Kingdom UK Technology UK Software—Application
26 James Halstead plc JHD $774.1 M United Kingdom UK Industrials UK Building Products & Equipment
27 FD Technologies plc FDP $744.1 M

(July 1, 2025)

 United Kingdom UK Technology UK Information Technology Services
28 Alpha Financial Markets Consulting plc AFM $718.3 M

(July 1, 2024)

 United Kingdom UK Industrials UK Consulting Services
29 Polar Capital Holdings plc POLR $685.1 M United Kingdom UK Financials UK Asset Management
30 Johnson Service Group plc JSG $677.0 M United Kingdom UK Industrials UK Specialty Business Services

Top FTSE AIM All-Share Companies Ranking by Market Cap as of Jan. 1, 2026

1. Caspian Sunrise plc

Company Profile: Caspian Sunrise plc
Market Cap (USD): $9.99 B
Stock: CASP wb_incandescent
Country: United Kingdom
Sector: UK Energy
Industry: UK Oil & Gas E&P

2. Greatland Gold plc

Company Profile: Greatland Gold plc
Market Cap (USD): $4.63 B
Stock: GGP wb_incandescent
Country: United Kingdom
Sector: UK Basic Materials
Industry: UK Gold

3. Jet2 plc

Company Profile: Jet2 plc
Market Cap (USD): $3.56 B
Stock: JET2 wb_incandescent
Country: United Kingdom
Sector: UK Consumer Discretionary
Industry: UK Travel Services

4. Pan African Resources plc

Company Profile: Pan African Resources plc
Market Cap (USD): $2.91 B
Stock: PAF wb_incandescent
Country: South Africa
Sector: South African Basic Materials
Industry: South African Gold

5. 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

6. HUTCHMED Ltd.

Company Profile: HUTCHMED Ltd.
Market Cap (USD): $2.36 B
Stock: HCM wb_incandescent
Country: Hong Kong
Sector: HK Healthcare
Industry: HK Biotechnology

7. Burford Capital Limited

Company Profile: Burford Capital Limited
Market Cap (USD): $1.93 B
Stock: BUR wb_incandescent
Country: United Kingdom
Sector: UK Financials
Industry: UK Asset Management

8. Yellow Cake plc

Company Profile: Yellow Cake plc
Market Cap (USD): $1.93 B
Stock: YCA wb_incandescent
Country: United Kingdom
Sector: UK Energy
Industry: UK Uranium

9. SigmaRoc plc

Company Profile: SigmaRoc plc
Market Cap (USD): $1.89 B
Stock: SRC wb_incandescent
Country: United Kingdom
Sector: UK Basic Materials
Industry: UK Building Materials

10. Fevertree Drinks plc

Company Profile: Fevertree Drinks plc
Market Cap (USD): $1.26 B
Stock: FEVR wb_incandescent
Country: United Kingdom
Sector: UK Consumer Staples
Industry: UK Beverages—Non-Alcoholic

11. CVS Group plc

Company Profile: CVS Group plc
Market Cap (USD): $1.22 B
Stock: CVSG wb_incandescent
Country: United Kingdom
Sector: UK Consumer Discretionary
Industry: UK Personal Services

12. Northamber plc

Company Profile: Northamber plc
Market Cap (USD): $1.20 B
Stock: NAR wb_incandescent
Country: United Kingdom
Sector: UK Technology
Industry: UK Electronics & Computer Distribution

13. Gamma Communications plc

Company Profile: Gamma Communications plc
Market Cap (USD): $1.13 B
Stock: GAMA wb_incandescent
Country: United Kingdom
Sector: UK Communication Services
Industry: UK Telecom Services

14. GlobalData plc

Company Profile: GlobalData plc
Market Cap (USD): $1.12 B
Stock: DATA wb_incandescent
Country: United Kingdom
Sector: UK Industrials
Industry: UK Consulting Services

15. Uniphar plc

Company Profile: Uniphar plc
Market Cap (USD): $1.06 B
Stock: UPR wb_incandescent
Country: Ireland
Sector: Irish Healthcare
Industry: Irish Medical Care Facilities

16. Volex plc

Company Profile: Volex plc
Market Cap (USD): $1.02 B
Stock: VLX wb_incandescent
Country: United Kingdom
Sector: UK Industrials
Industry: UK Electrical Equipment & Parts

17. Learning Technologies Group plc

Company Profile: Learning Technologies Group plc
Market Cap (USD): $961.5 M (Jan. 1, 2025)
Stock: LTG wb_incandescent
Country: United Kingdom
Sector: UK Consumer Staples
Industry: UK Education & Training Services

18. Renew Holdings plc

Company Profile: Renew Holdings plc
Market Cap (USD): $945.8 M
Stock: RNWH wb_incandescent
Country: United Kingdom
Sector: UK Industrials
Industry: UK Engineering & Construction

19. Serica Energy plc

Company Profile: Serica Energy plc
Market Cap (USD): $937.6 M
Stock: SQZ wb_incandescent
Country: United Kingdom
Sector: UK Energy
Industry: UK Oil & Gas E&P

20. Craneware plc

Company Profile: Craneware plc
Market Cap (USD): $912.8 M
Stock: CRW wb_incandescent
Country: United Kingdom
Sector: UK Healthcare
Industry: UK Health Information Services

21. Greencoat Renewables plc

Company Profile: Greencoat Renewables plc
Market Cap (USD): $911.3 M
Stock: GRP wb_incandescent
Country: Ireland
Sector: Irish Utilities
Industry: Irish Utilities—Independent Power Producers

22. M.P. Evans Group plc

Company Profile: M.P. Evans Group plc
Market Cap (USD): $885.7 M
Stock: MPE wb_incandescent
Country: United Kingdom
Sector: UK Consumer Staples
Industry: UK Farm Products

23. Boku, Inc.

Company Profile: Boku, Inc.
Market Cap (USD): $885.0 M
Stock: BOKU wb_incandescent
Country: United States
Sector: US Technology
Industry: US Information Technology Services

24. SEEEN plc

Company Profile: SEEEN plc
Market Cap (USD): $840.1 M
Stock: SEEN wb_incandescent
Country: United Kingdom
Sector: UK Technology
Industry: UK Software—Application

25. GB Group plc

Company Profile: GB Group plc
Market Cap (USD): $784.7 M
Stock: GBG wb_incandescent
Country: United Kingdom
Sector: UK Technology
Industry: UK Software—Application

26. James Halstead plc

Company Profile: James Halstead plc
Market Cap (USD): $774.1 M
Stock: JHD wb_incandescent
Country: United Kingdom
Sector: UK Industrials
Industry: UK Building Products & Equipment

27. FD Technologies plc

Company Profile: FD Technologies plc
Market Cap (USD): $744.1 M (July 1, 2025)
Stock: FDP wb_incandescent
Country: United Kingdom
Sector: UK Technology
Industry: UK Information Technology Services

28. Alpha Financial Markets Consulting plc

Company Profile: Alpha Financial Markets Consulting plc
Market Cap (USD): $718.3 M (July 1, 2024)
Stock: AFM wb_incandescent
Country: United Kingdom
Sector: UK Industrials
Industry: UK Consulting Services

29. Polar Capital Holdings plc

Company Profile: Polar Capital Holdings plc
Market Cap (USD): $685.1 M
Stock: POLR wb_incandescent
Country: United Kingdom
Sector: UK Financials
Industry: UK Asset Management

30. Johnson Service Group plc

Company Profile: Johnson Service Group plc
Market Cap (USD): $677.0 M
Stock: JSG wb_incandescent
Country: United Kingdom
Sector: UK Industrials
Industry: UK Specialty Business Services

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