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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
31 Team17 Group plc TM17 $640.6 M United Kingdom UK Communication Services UK Electronic Gaming & Multimedia
32 Advanced Medical Solutions Group plc AMS $636.0 M United Kingdom UK Healthcare UK Medical Instruments & Supplies
33 Atalaya Mining plc ATYM $630.8 M

(March 1, 2023)

 Cyprus Cyprus Basic Materials Cyprus Copper
34 Rockhopper Exploration plc RKH $621.6 M United Kingdom UK Energy UK Oil & Gas E&P
35 Thor Explorations Ltd THX $618.7 M Canada Canadian Basic Materials Canadian Gold
36 Young & Co.'s Brewery, plc YNGN $618.5 M United Kingdom UK Consumer Discretionary UK Restaurants
37 Young & Co.'s Brewery, plc YNGA $618.5 M United Kingdom UK Consumer Discretionary UK Restaurants
38 Griffin Mining Limited GFM $616.8 M United Kingdom UK Basic Materials UK Other Industrial Metals & Mining
39 Metals Exploration plc MTL $590.2 M United Kingdom UK Basic Materials UK Gold
40 Cohort plc CHRT $552.5 M United Kingdom UK Industrials UK Aerospace & Defense
41 Tatton Asset Management plc TAM $549.5 M United Kingdom UK Financials UK Asset Management
42 Elixirr International plc ELIX $543.0 M United Kingdom UK Industrials UK Consulting Services
43 Filtronic plc FTC $530.5 M United Kingdom UK Technology UK Communication Equipment
44 Mortgage Advice Bureau (Holdings) plc MAB1 $529.4 M United Kingdom UK Financials UK Mortgage Finance
45 ITM Power plc ITM $525.4 M United Kingdom UK Technology UK Electronic Components
46 Mattioli Woods plc MTW $523.3 M

(July 1, 2024)

 United Kingdom UK Financials UK Asset Management
47 Judges Scientific plc JDG $514.7 M United Kingdom UK Technology UK Scientific & Technical Instruments
48 Restore plc RST $500.0 M United Kingdom UK Industrials UK Specialty Business Services
49 Cerillion plc CER $486.4 M United Kingdom UK Technology UK Software—Application
50 Marlowe plc MRL $473.9 M

(July 1, 2025)

 United Kingdom UK Industrials UK Security & Protection Services
51 Nichols plc NICL $458.6 M United Kingdom UK Consumer Staples UK Beverages—Non-Alcoholic
52 FRP Advisory Group plc FRP $457.1 M United Kingdom UK Financials UK Capital Markets
53 Lok'nStore Group plc LOK $449.3 M

(July 1, 2024)

 United Kingdom UK Real Estate UK Real Estate Services
54 The Property Franchise Group plc TPFG $443.6 M United Kingdom UK Real Estate UK Real Estate Services
55 Empire Metals Limited EEE $433.0 M United Kingdom UK Basic Materials UK Other Precious Metals & Mining
56 Central Asia Metals plc CAML $432.8 M United Kingdom UK Basic Materials UK Copper
57 FW Thorpe plc TFW $430.0 M United Kingdom UK Industrials UK Electrical Equipment & Parts
58 IDOX plc IDOX $423.4 M United Kingdom UK Technology UK Software—Application
59 RWS Holdings plc RWS $421.5 M United Kingdom UK Industrials UK Consulting Services
60 Loungers plc LGRS $418.1 M

(Jan. 1, 2025)

 United Kingdom UK Consumer Discretionary UK Restaurants

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

31. Team17 Group plc

Company Profile: Team17 Group plc
Market Cap (USD): $640.6 M
Stock: TM17 wb_incandescent
Country: United Kingdom
Sector: UK Communication Services
Industry: UK Electronic Gaming & Multimedia

32. Advanced Medical Solutions Group plc

Company Profile: Advanced Medical Solutions Group plc
Market Cap (USD): $636.0 M
Stock: AMS wb_incandescent
Country: United Kingdom
Sector: UK Healthcare
Industry: UK Medical Instruments & Supplies

33. Atalaya Mining plc

Company Profile: Atalaya Mining plc
Market Cap (USD): $630.8 M (March 1, 2023)
Stock: ATYM wb_incandescent
Country: Cyprus
Sector: Cyprus Basic Materials
Industry: Cyprus Copper

34. Rockhopper Exploration plc

Company Profile: Rockhopper Exploration plc
Market Cap (USD): $621.6 M
Stock: RKH wb_incandescent
Country: United Kingdom
Sector: UK Energy
Industry: UK Oil & Gas E&P

35. Thor Explorations Ltd

Company Profile: Thor Explorations Ltd
Market Cap (USD): $618.7 M
Stock: THX wb_incandescent
Country: Canada
Sector: Canadian Basic Materials
Industry: Canadian Gold

36. Young & Co.'s Brewery, plc

Company Profile: Young & Co.'s Brewery, plc
Market Cap (USD): $618.5 M
Stock: YNGN wb_incandescent
Country: United Kingdom
Sector: UK Consumer Discretionary
Industry: UK Restaurants

37. Young & Co.'s Brewery, plc

Company Profile: Young & Co.'s Brewery, plc
Market Cap (USD): $618.5 M
Stock: YNGA wb_incandescent
Country: United Kingdom
Sector: UK Consumer Discretionary
Industry: UK Restaurants

38. Griffin Mining Limited

Company Profile: Griffin Mining Limited
Market Cap (USD): $616.8 M
Stock: GFM wb_incandescent
Country: United Kingdom
Sector: UK Basic Materials
Industry: UK Other Industrial Metals & Mining

39. Metals Exploration plc

Company Profile: Metals Exploration plc
Market Cap (USD): $590.2 M
Stock: MTL wb_incandescent
Country: United Kingdom
Sector: UK Basic Materials
Industry: UK Gold

40. Cohort plc

Company Profile: Cohort plc
Market Cap (USD): $552.5 M
Stock: CHRT wb_incandescent
Country: United Kingdom
Sector: UK Industrials
Industry: UK Aerospace & Defense

41. Tatton Asset Management plc

Company Profile: Tatton Asset Management plc
Market Cap (USD): $549.5 M
Stock: TAM wb_incandescent
Country: United Kingdom
Sector: UK Financials
Industry: UK Asset Management

42. Elixirr International plc

Company Profile: Elixirr International plc
Market Cap (USD): $543.0 M
Stock: ELIX wb_incandescent
Country: United Kingdom
Sector: UK Industrials
Industry: UK Consulting Services

43. Filtronic plc

Company Profile: Filtronic plc
Market Cap (USD): $530.5 M
Stock: FTC wb_incandescent
Country: United Kingdom
Sector: UK Technology
Industry: UK Communication Equipment

44. Mortgage Advice Bureau (Holdings) plc

Company Profile: Mortgage Advice Bureau (Holdings) plc
Market Cap (USD): $529.4 M
Stock: MAB1 wb_incandescent
Country: United Kingdom
Sector: UK Financials
Industry: UK Mortgage Finance

45. ITM Power plc

Company Profile: ITM Power plc
Market Cap (USD): $525.4 M
Stock: ITM wb_incandescent
Country: United Kingdom
Sector: UK Technology
Industry: UK Electronic Components

46. 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

47. Judges Scientific plc

Company Profile: Judges Scientific plc
Market Cap (USD): $514.7 M
Stock: JDG wb_incandescent
Country: United Kingdom
Sector: UK Technology
Industry: UK Scientific & Technical Instruments

48. Restore plc

Company Profile: Restore plc
Market Cap (USD): $500.0 M
Stock: RST wb_incandescent
Country: United Kingdom
Sector: UK Industrials
Industry: UK Specialty Business Services

49. Cerillion plc

Company Profile: Cerillion plc
Market Cap (USD): $486.4 M
Stock: CER wb_incandescent
Country: United Kingdom
Sector: UK Technology
Industry: UK Software—Application

50. Marlowe plc

Company Profile: Marlowe plc
Market Cap (USD): $473.9 M (July 1, 2025)
Stock: MRL wb_incandescent
Country: United Kingdom
Sector: UK Industrials
Industry: UK Security & Protection Services

51. Nichols plc

Company Profile: Nichols plc
Market Cap (USD): $458.6 M
Stock: NICL wb_incandescent
Country: United Kingdom
Sector: UK Consumer Staples
Industry: UK Beverages—Non-Alcoholic

52. FRP Advisory Group plc

Company Profile: FRP Advisory Group plc
Market Cap (USD): $457.1 M
Stock: FRP wb_incandescent
Country: United Kingdom
Sector: UK Financials
Industry: UK Capital Markets

53. 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

54. The Property Franchise Group plc

Company Profile: The Property Franchise Group plc
Market Cap (USD): $443.6 M
Stock: TPFG wb_incandescent
Country: United Kingdom
Sector: UK Real Estate
Industry: UK Real Estate Services

55. Empire Metals Limited

Company Profile: Empire Metals Limited
Market Cap (USD): $433.0 M
Stock: EEE wb_incandescent
Country: United Kingdom
Sector: UK Basic Materials
Industry: UK Other Precious Metals & Mining

56. Central Asia Metals plc

Company Profile: Central Asia Metals plc
Market Cap (USD): $432.8 M
Stock: CAML wb_incandescent
Country: United Kingdom
Sector: UK Basic Materials
Industry: UK Copper

57. FW Thorpe plc

Company Profile: FW Thorpe plc
Market Cap (USD): $430.0 M
Stock: TFW wb_incandescent
Country: United Kingdom
Sector: UK Industrials
Industry: UK Electrical Equipment & Parts

58. IDOX plc

Company Profile: IDOX plc
Market Cap (USD): $423.4 M
Stock: IDOX wb_incandescent
Country: United Kingdom
Sector: UK Technology
Industry: UK Software—Application

59. RWS Holdings plc

Company Profile: RWS Holdings plc
Market Cap (USD): $421.5 M
Stock: RWS wb_incandescent
Country: United Kingdom
Sector: UK Industrials
Industry: UK Consulting Services

60. Loungers plc

Company Profile: Loungers plc
Market Cap (USD): $418.1 M (Jan. 1, 2025)
Stock: LGRS wb_incandescent
Country: United Kingdom
Sector: UK Consumer Discretionary
Industry: UK Restaurants

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