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Top FTSE AIM All-Share Companies by Market Cap and Stocks in 2024

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, 2024

Ranking Company Stock Market Cap (USD) Country Sector Industry
1 Open Orphan plc ORPH wb_incandescent $25.41 B United Kingdom Healthcare Biotechnology
2 Abcam plc ABC wb_incandescent $3.58 B

(Dec. 1, 2022)

United Kingdom Healthcare Biotechnology
3 Burford Capital Limited BUR wb_incandescent $3.42 B United Kingdom Financials Asset Management
4 Jet2 plc JET2 wb_incandescent $3.41 B United Kingdom Consumer Discretionary Travel Services
5 HUTCHMED Ltd. HCM wb_incandescent $3.14 B Hong Kong Healthcare Biotechnology
6 GlobalData plc DATA wb_incandescent $2.31 B United Kingdom Industrials Consulting Services
7 Secure Income REIT Ord SIR wb_incandescent $1.81 B

(July 1, 2022)

United Kingdom Real Estate REIT—Diversified
8 YouGov plc YOU wb_incandescent $1.73 B United Kingdom Communication Services Advertising Agencies
9 Yellow Cake plc YCA wb_incandescent $1.71 B United Kingdom Energy Uranium
10 Keywords Studios plc KWS wb_incandescent $1.67 B Ireland Communication Services Electronic Gaming & Multimedia
11 Blue Prism Group plc PRSM wb_incandescent $1.66 B

(March 1, 2022)

United Kingdom Technology Software—Infrastructure
12 Smart Metering Systems plc SMS wb_incandescent $1.65 B United Kingdom Industrials Electrical Equipment & Parts
13 Clinigen Group plc CLIN wb_incandescent $1.61 B

(April 1, 2022)

United Kingdom Healthcare Medical Distribution
14 Fevertree Drinks plc FEVR wb_incandescent $1.56 B United Kingdom Consumer Staples Beverages—Non-Alcoholic
15 Breedon Group plc BREE wb_incandescent $1.54 B United Kingdom Basic Materials Building Materials
16 CVS Group plc CVSG wb_incandescent $1.53 B United Kingdom Consumer Discretionary Personal Services
17 Gamma Communications plc GAMA wb_incandescent $1.40 B United Kingdom Communication Services Telecom Services
18 Ideagen plc IDEA wb_incandescent $1.27 B

(July 1, 2022)

United Kingdom Technology Software—Application
19 Greencoat Renewables plc GRP wb_incandescent $1.25 B Ireland Utilities Utilities—Independent Power Producers
20 RWS Holdings plc RWS wb_incandescent $1.19 B United Kingdom Industrials Consulting Services
21 Sumo Group plc SUMO wb_incandescent $1.18 B

(Jan. 1, 2022)

United Kingdom Communication Services Electronic Gaming & Multimedia
22 Serica Energy plc SQZ wb_incandescent $1.14 B United Kingdom Energy Oil & Gas E&P
23 EMIS Group plc EMIS wb_incandescent $1.13 B

(July 1, 2023)

United Kingdom Healthcare Health Information Services
24 WANdisco plc WAND wb_incandescent $1.12 B

(July 1, 2023)

United Kingdom Technology Software—Application
25 James Halstead plc JHD wb_incandescent $1.07 B United Kingdom Industrials Building Products & Equipment
26 Next Fifteen Communications Group plc NFC wb_incandescent $1.01 B United Kingdom Communication Services Advertising Agencies
27 President Energy plc PPC wb_incandescent $1.00 B United Kingdom Energy Oil & Gas E&P
28 CareTech Holdings plc CTH wb_incandescent $978.5 M

(Sept. 1, 2022)

United Kingdom Healthcare Medical Care Facilities
29 Alpha FX Group plc AFX wb_incandescent $936.9 M United Kingdom Financials Capital Markets
30 Impax Asset Management Group plc IPX wb_incandescent $898.5 M United Kingdom Financials Asset Management

Top FTSE AIM All-Share Companies Ranking by Market Cap as of Jan. 1, 2024

1. Open Orphan plc

Company Profile: Open Orphan plc
Market Cap (USD): $25.41 B
Stock: ORPH wb_incandescent
Country: United Kingdom
Sector: Healthcare
Industry: Biotechnology

2. Abcam plc

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

3. Burford Capital Limited

Company Profile: Burford Capital Limited
Market Cap (USD): $3.42 B
Stock: BUR wb_incandescent
Country: United Kingdom
Sector: Financials
Industry: Asset Management

4. Jet2 plc

Company Profile: Jet2 plc
Market Cap (USD): $3.41 B
Stock: JET2 wb_incandescent
Country: United Kingdom
Sector: Consumer Discretionary
Industry: Travel Services

5. HUTCHMED Ltd.

Company Profile: HUTCHMED Ltd.
Market Cap (USD): $3.14 B
Stock: HCM wb_incandescent
Country: Hong Kong
Sector: Healthcare
Industry: Biotechnology

6. GlobalData plc

Company Profile: GlobalData plc
Market Cap (USD): $2.31 B
Stock: DATA wb_incandescent
Country: United Kingdom
Sector: Industrials
Industry: Consulting Services

7. 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: Real Estate
Industry: REIT—Diversified

8. YouGov plc

Company Profile: YouGov plc
Market Cap (USD): $1.73 B
Stock: YOU wb_incandescent
Country: United Kingdom
Sector: Communication Services
Industry: Advertising Agencies

9. Yellow Cake plc

Company Profile: Yellow Cake plc
Market Cap (USD): $1.71 B
Stock: YCA wb_incandescent
Country: United Kingdom
Sector: Energy
Industry: Uranium

10. Keywords Studios plc

Company Profile: Keywords Studios plc
Market Cap (USD): $1.67 B
Stock: KWS wb_incandescent
Country: Ireland
Sector: Communication Services
Industry: Electronic Gaming & Multimedia

11. 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: Technology
Industry: Software—Infrastructure

12. Smart Metering Systems plc

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

13. 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: Healthcare
Industry: Medical Distribution

14. Fevertree Drinks plc

Company Profile: Fevertree Drinks plc
Market Cap (USD): $1.56 B
Stock: FEVR wb_incandescent
Country: United Kingdom
Sector: Consumer Staples
Industry: Beverages—Non-Alcoholic

15. Breedon Group plc

Company Profile: Breedon Group plc
Market Cap (USD): $1.54 B
Stock: BREE wb_incandescent
Country: United Kingdom
Sector: Basic Materials
Industry: Building Materials

16. CVS Group plc

Company Profile: CVS Group plc
Market Cap (USD): $1.53 B
Stock: CVSG wb_incandescent
Country: United Kingdom
Sector: Consumer Discretionary
Industry: Personal Services

17. Gamma Communications plc

Company Profile: Gamma Communications plc
Market Cap (USD): $1.40 B
Stock: GAMA wb_incandescent
Country: United Kingdom
Sector: Communication Services
Industry: Telecom Services

18. Ideagen plc

Company Profile: Ideagen plc
Market Cap (USD): $1.27 B (July 1, 2022)
Stock: IDEA wb_incandescent
Country: United Kingdom
Sector: Technology
Industry: Software—Application

19. Greencoat Renewables plc

Company Profile: Greencoat Renewables plc
Market Cap (USD): $1.25 B
Stock: GRP wb_incandescent
Country: Ireland
Sector: Utilities
Industry: Utilities—Independent Power Producers

20. RWS Holdings plc

Company Profile: RWS Holdings plc
Market Cap (USD): $1.19 B
Stock: RWS wb_incandescent
Country: United Kingdom
Sector: Industrials
Industry: Consulting Services

21. 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: Communication Services
Industry: Electronic Gaming & Multimedia

22. Serica Energy plc

Company Profile: Serica Energy plc
Market Cap (USD): $1.14 B
Stock: SQZ wb_incandescent
Country: United Kingdom
Sector: Energy
Industry: Oil & Gas E&P

23. 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: Healthcare
Industry: Health Information Services

24. WANdisco plc

Company Profile: WANdisco plc
Market Cap (USD): $1.12 B (July 1, 2023)
Stock: WAND wb_incandescent
Country: United Kingdom
Sector: Technology
Industry: Software—Application

25. James Halstead plc

Company Profile: James Halstead plc
Market Cap (USD): $1.07 B
Stock: JHD wb_incandescent
Country: United Kingdom
Sector: Industrials
Industry: Building Products & Equipment

26. Next Fifteen Communications Group plc

Company Profile: Next Fifteen Communications Group plc
Market Cap (USD): $1.01 B
Stock: NFC wb_incandescent
Country: United Kingdom
Sector: Communication Services
Industry: Advertising Agencies

27. President Energy plc

Company Profile: President Energy plc
Market Cap (USD): $1.00 B
Stock: PPC wb_incandescent
Country: United Kingdom
Sector: Energy
Industry: Oil & Gas E&P

28. 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: Healthcare
Industry: Medical Care Facilities

29. Alpha FX Group plc

Company Profile: Alpha FX Group plc
Market Cap (USD): $936.9 M
Stock: AFX wb_incandescent
Country: United Kingdom
Sector: Financials
Industry: Capital Markets

30. Impax Asset Management Group plc

Company Profile: Impax Asset Management Group plc
Market Cap (USD): $898.5 M
Stock: IPX wb_incandescent
Country: United Kingdom
Sector: Financials
Industry: Asset Management