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Top FTSE AIM All-Share Companies by Market Cap and Stocks in 2025

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.

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Top FTSE AIM All-Share Companies Ranking by Market Cap as of Jan. 1, 2025

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Ranking Company Stock Market Cap (USD) Country Sector Industry
31 Polar Capital Holdings plc POLR wb_incandescent $612.3 M United Kingdom UK Financials UK Asset Management
32 Advanced Medical Solutions Group plc AMS wb_incandescent $600.9 M United Kingdom UK Healthcare UK Medical Instruments & Supplies
33 Nichols plc NICL wb_incandescent $593.8 M United Kingdom UK Consumer Staples UK Beverages—Non-Alcoholic
34 Uniphar plc UPR wb_incandescent $579.5 M Ireland Irish Healthcare Irish Medical Care Facilities
35 Young & Co.'s Brewery, plc YNGN wb_incandescent $573.9 M United Kingdom UK Consumer Discretionary UK Restaurants
36 Young & Co.'s Brewery, plc YNGA wb_incandescent $573.9 M United Kingdom UK Consumer Discretionary UK Restaurants
37 Pantheon Resources plc PANR wb_incandescent $561.9 M United Kingdom UK Energy UK Oil & Gas E&P
38 YouGov plc YOU wb_incandescent $561.2 M United Kingdom UK Communication Services UK Advertising Agencies
39 boohoo group plc BOO wb_incandescent $534.7 M United Kingdom UK Consumer Discretionary UK Internet Retail
40 Warpaint London plc W7L wb_incandescent $524.5 M United Kingdom UK Consumer Staples UK Household & Personal Products
41 Mattioli Woods plc MTW wb_incandescent $523.3 M

(July 1, 2024)

 United Kingdom UK Financials UK Asset Management
42 AB Dynamics plc ABDP wb_incandescent $517.4 M United Kingdom UK Consumer Discretionary UK Auto Parts
43 Tatton Asset Management plc TAM wb_incandescent $502.9 M United Kingdom UK Financials UK Asset Management
44 PetroTal Corp. PTAL wb_incandescent $481.6 M United States US Energy US Oil & Gas E&P
45 Mortgage Advice Bureau (Holdings) plc MAB1 wb_incandescent $465.5 M United Kingdom UK Financials UK Mortgage Finance
46 Elixirr International plc ELIX wb_incandescent $450.7 M United Kingdom UK Industrials UK Consulting Services
47 Lok'nStore Group plc LOK wb_incandescent $449.3 M

(July 1, 2024)

 United Kingdom UK Real Estate UK Real Estate Services
48 FW Thorpe plc TFW wb_incandescent $447.8 M United Kingdom UK Industrials UK Electrical Equipment & Parts
49 FRP Advisory Group plc FRP wb_incandescent $430.4 M United Kingdom UK Financials UK Capital Markets
50 Loungers plc LGRS wb_incandescent $418.1 M United Kingdom UK Consumer Discretionary UK Restaurants
51 Alliance Pharma plc APH wb_incandescent $413.8 M United Kingdom UK Healthcare UK Drug Manufacturers—Specialty & Generic
52 Team17 Group plc TM17 wb_incandescent $408.4 M United Kingdom UK Communication Services UK Electronic Gaming & Multimedia
53 Restore plc RST wb_incandescent $378.6 M United Kingdom UK Industrials UK Specialty Business Services
54 IDOX plc IDOX wb_incandescent $378.0 M United Kingdom UK Technology UK Software—Application
55 Fintel Plc FNTL wb_incandescent $376.6 M United Kingdom UK Industrials UK Consulting Services
56 Yü Group plc YU. wb_incandescent $374.9 M United Kingdom UK Utilities UK Utilities—Diversified
57 Midwich Group plc MIDW wb_incandescent $368.8 M United Kingdom UK Technology UK Electronics & Computer Distribution
58 IQGeo Group plc IQG wb_incandescent $366.8 M

(July 1, 2024)

 United Kingdom UK Technology UK Software—Application
59 B.P. Marsh & Partners plc BPM wb_incandescent $351.4 M United Kingdom UK Financials UK Asset Management
60 Central Asia Metals plc CAML wb_incandescent $346.2 M United Kingdom UK Basic Materials UK Copper

Top FTSE AIM All-Share Companies Ranking by Market Cap as of Jan. 1, 2025

31. 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

32. 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

33. 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

34. Uniphar plc

Company Profile: Uniphar plc
Market Cap (USD): $579.5 M
Stock: UPR wb_incandescent
Country: Ireland
Sector: Irish Healthcare
Industry: Irish Medical Care Facilities

35. Young & Co.'s Brewery, plc

Company Profile: Young & Co.'s Brewery, plc
Market Cap (USD): $573.9 M
Stock: YNGN wb_incandescent
Country: United Kingdom
Sector: UK Consumer Discretionary
Industry: UK Restaurants

36. Young & Co.'s Brewery, plc

Company Profile: Young & Co.'s Brewery, plc
Market Cap (USD): $573.9 M
Stock: YNGA wb_incandescent
Country: United Kingdom
Sector: UK Consumer Discretionary
Industry: UK Restaurants

37. Pantheon Resources plc

Company Profile: Pantheon Resources plc
Market Cap (USD): $561.9 M
Stock: PANR wb_incandescent
Country: United Kingdom
Sector: UK Energy
Industry: UK Oil & Gas E&P

38. YouGov plc

Company Profile: YouGov plc
Market Cap (USD): $561.2 M
Stock: YOU wb_incandescent
Country: United Kingdom
Sector: UK Communication Services
Industry: UK Advertising Agencies

39. boohoo group plc

Company Profile: boohoo group plc
Market Cap (USD): $534.7 M
Stock: BOO wb_incandescent
Country: United Kingdom
Sector: UK Consumer Discretionary
Industry: UK Internet Retail

40. Warpaint London plc

Company Profile: Warpaint London plc
Market Cap (USD): $524.5 M
Stock: W7L wb_incandescent
Country: United Kingdom
Sector: UK Consumer Staples
Industry: UK Household & Personal Products

41. Mattioli Woods plc

Company Profile: Mattioli Woods plc
Market Cap (USD): $523.3 M (July 1, 2024)
Stock: MTW wb_incandescent
Country: United Kingdom
Sector: UK Financials
Industry: UK Asset Management

42. AB Dynamics plc

Company Profile: AB Dynamics plc
Market Cap (USD): $517.4 M
Stock: ABDP wb_incandescent
Country: United Kingdom
Sector: UK Consumer Discretionary
Industry: UK Auto Parts

43. Tatton Asset Management plc

Company Profile: Tatton Asset Management plc
Market Cap (USD): $502.9 M
Stock: TAM wb_incandescent
Country: United Kingdom
Sector: UK Financials
Industry: UK Asset Management

44. PetroTal Corp.

Company Profile: PetroTal Corp.
Market Cap (USD): $481.6 M
Stock: PTAL wb_incandescent
Country: United States
Sector: US Energy
Industry: US Oil & Gas E&P

45. Mortgage Advice Bureau (Holdings) plc

Company Profile: Mortgage Advice Bureau (Holdings) plc
Market Cap (USD): $465.5 M
Stock: MAB1 wb_incandescent
Country: United Kingdom
Sector: UK Financials
Industry: UK Mortgage Finance

46. Elixirr International plc

Company Profile: Elixirr International plc
Market Cap (USD): $450.7 M
Stock: ELIX wb_incandescent
Country: United Kingdom
Sector: UK Industrials
Industry: UK Consulting Services

47. Lok'nStore Group plc

Company Profile: Lok'nStore Group plc
Market Cap (USD): $449.3 M (July 1, 2024)
Stock: LOK wb_incandescent
Country: United Kingdom
Sector: UK Real Estate
Industry: UK Real Estate Services

48. FW Thorpe plc

Company Profile: FW Thorpe plc
Market Cap (USD): $447.8 M
Stock: TFW wb_incandescent
Country: United Kingdom
Sector: UK Industrials
Industry: UK Electrical Equipment & Parts

49. FRP Advisory Group plc

Company Profile: FRP Advisory Group plc
Market Cap (USD): $430.4 M
Stock: FRP wb_incandescent
Country: United Kingdom
Sector: UK Financials
Industry: UK Capital Markets

50. Loungers plc

Company Profile: Loungers plc
Market Cap (USD): $418.1 M
Stock: LGRS wb_incandescent
Country: United Kingdom
Sector: UK Consumer Discretionary
Industry: UK Restaurants

51. Alliance Pharma plc

Company Profile: Alliance Pharma plc
Market Cap (USD): $413.8 M
Stock: APH wb_incandescent
Country: United Kingdom
Sector: UK Healthcare
Industry: UK Drug Manufacturers—Specialty & Generic

52. Team17 Group plc

Company Profile: Team17 Group plc
Market Cap (USD): $408.4 M
Stock: TM17 wb_incandescent
Country: United Kingdom
Sector: UK Communication Services
Industry: UK Electronic Gaming & Multimedia

53. Restore plc

Company Profile: Restore plc
Market Cap (USD): $378.6 M
Stock: RST wb_incandescent
Country: United Kingdom
Sector: UK Industrials
Industry: UK Specialty Business Services

54. IDOX plc

Company Profile: IDOX plc
Market Cap (USD): $378.0 M
Stock: IDOX wb_incandescent
Country: United Kingdom
Sector: UK Technology
Industry: UK Software—Application

55. Fintel Plc

Company Profile: Fintel Plc
Market Cap (USD): $376.6 M
Stock: FNTL wb_incandescent
Country: United Kingdom
Sector: UK Industrials
Industry: UK Consulting Services

56. Yü Group plc

Company Profile: Yü Group plc
Market Cap (USD): $374.9 M
Stock: YU. wb_incandescent
Country: United Kingdom
Sector: UK Utilities
Industry: UK Utilities—Diversified

57. Midwich Group plc

Company Profile: Midwich Group plc
Market Cap (USD): $368.8 M
Stock: MIDW wb_incandescent
Country: United Kingdom
Sector: UK Technology
Industry: UK Electronics & Computer Distribution

58. IQGeo Group plc

Company Profile: IQGeo Group plc
Market Cap (USD): $366.8 M (July 1, 2024)
Stock: IQG wb_incandescent
Country: United Kingdom
Sector: UK Technology
Industry: UK Software—Application

59. B.P. Marsh & Partners plc

Company Profile: B.P. Marsh & Partners plc
Market Cap (USD): $351.4 M
Stock: BPM wb_incandescent
Country: United Kingdom
Sector: UK Financials
Industry: UK Asset Management

60. Central Asia Metals plc

Company Profile: Central Asia Metals plc
Market Cap (USD): $346.2 M
Stock: CAML wb_incandescent
Country: United Kingdom
Sector: UK Basic Materials
Industry: UK Copper

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