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Top FTSE AIM 100 Companies by Market Cap and Stocks in 2026

This is the list of the largest public listed companies in the FTSE AIM 100 index ranked by market capitalization, together with links to their reference stock, sector and industry.

FTSE AIM 100 Chart & Analysis

Top FTSE AIM 100 Companies Ranking by Market Cap as of Jan. 1, 2026

Ranking Company Stock Market Cap (USD) Country Sector Industry
31 M.P. Evans Group plc MPE $885.7 M United Kingdom UK Consumer Staples UK Farm Products
32 Boku, Inc. BOKU $885.0 M United States US Technology US Information Technology Services
33 GB Group plc GBG $784.7 M United Kingdom UK Technology UK Software—Application
34 James Halstead plc JHD $774.1 M United Kingdom UK Industrials UK Building Products & Equipment
35 FD Technologies plc FDP $744.1 M

(July 1, 2025)

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

(July 1, 2024)

 United Kingdom UK Industrials UK Consulting Services
37 Polar Capital Holdings plc POLR $685.1 M United Kingdom UK Financials UK Asset Management
38 Johnson Service Group plc JSG $677.0 M United Kingdom UK Industrials UK Specialty Business Services
39 Hotel Chocolat Group plc HOTC $651.7 M

(Jan. 1, 2024)

 United Kingdom UK Consumer Staples UK Confectioners
40 Warehouse REIT plc WHR $649.5 M

(July 1, 2025)

 United Kingdom UK Real Estate UK REIT—Industrial
41 Team17 Group plc TM17 $640.6 M United Kingdom UK Communication Services UK Electronic Gaming & Multimedia
42 Advanced Medical Solutions Group plc AMS $636.0 M United Kingdom UK Healthcare UK Medical Instruments & Supplies
43 Atalaya Mining plc ATYM $630.8 M

(March 1, 2023)

 Cyprus Cyprus Basic Materials Cyprus Copper
44 Young & Co.'s Brewery, plc YNGN $618.5 M United Kingdom UK Consumer Discretionary UK Restaurants
45 Young & Co.'s Brewery, plc YNGA $618.5 M United Kingdom UK Consumer Discretionary UK Restaurants
46 Urban Logistics REIT plc SHED $598.8 M

(Jan. 1, 2025)

 United Kingdom UK Real Estate UK REIT—Industrial
47 Silence Therapeutics plc SLN $588.4 M

(Nov. 1, 2021)

 United Kingdom UK Healthcare UK Biotechnology
48 Ceres Power Holdings plc CWR $560.2 M United Kingdom UK Industrials UK Electrical Equipment & Parts
49 Cohort plc CHRT $552.5 M United Kingdom UK Industrials UK Aerospace & Defense
50 Mortgage Advice Bureau (Holdings) plc MAB1 $529.4 M United Kingdom UK Financials UK Mortgage Finance
51 ITM Power plc ITM $525.4 M United Kingdom UK Technology UK Electronic Components
52 Mattioli Woods plc MTW $523.3 M

(July 1, 2024)

 United Kingdom UK Financials UK Asset Management
53 Judges Scientific plc JDG $514.7 M United Kingdom UK Technology UK Scientific & Technical Instruments
54 Restore plc RST $500.0 M United Kingdom UK Industrials UK Specialty Business Services
55 Marlowe plc MRL $473.9 M

(July 1, 2025)

 United Kingdom UK Industrials UK Security & Protection Services
56 Numis Corporation plc NUM $465.4 M

(July 1, 2023)

 United Kingdom UK Financials UK Capital Markets
57 ASOS plc ASC $459.7 M United Kingdom UK Consumer Discretionary UK Internet Retail
58 Nichols plc NICL $458.6 M United Kingdom UK Consumer Staples UK Beverages—Non-Alcoholic
59 FRP Advisory Group plc FRP $457.1 M United Kingdom UK Financials UK Capital Markets
60 Telit Communications plc TCM $435.1 M

(Aug. 1, 2021)

 United Kingdom UK Technology UK Communication Equipment

Top FTSE AIM 100 Companies Ranking by Market Cap as of Jan. 1, 2026

31. 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

32. 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

33. 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

34. 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

35. 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

36. 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

37. 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

38. 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

39. Hotel Chocolat Group plc

Company Profile: Hotel Chocolat Group plc
Market Cap (USD): $651.7 M (Jan. 1, 2024)
Stock: HOTC wb_incandescent
Country: United Kingdom
Sector: UK Consumer Staples
Industry: UK Confectioners

40. Warehouse REIT plc

Company Profile: Warehouse REIT plc
Market Cap (USD): $649.5 M (July 1, 2025)
Stock: WHR wb_incandescent
Country: United Kingdom
Sector: UK Real Estate
Industry: UK REIT—Industrial

41. 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

42. 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

43. 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

44. 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

45. 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

46. Urban Logistics REIT plc

Company Profile: Urban Logistics REIT plc
Market Cap (USD): $598.8 M (Jan. 1, 2025)
Stock: SHED wb_incandescent
Country: United Kingdom
Sector: UK Real Estate
Industry: UK REIT—Industrial

47. 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

48. Ceres Power Holdings plc

Company Profile: Ceres Power Holdings plc
Market Cap (USD): $560.2 M
Stock: CWR wb_incandescent
Country: United Kingdom
Sector: UK Industrials
Industry: UK Electrical Equipment & Parts

49. 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

50. 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

51. 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

52. 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

53. 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

54. 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

55. 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

56. Numis Corporation plc

Company Profile: Numis Corporation plc
Market Cap (USD): $465.4 M (July 1, 2023)
Stock: NUM wb_incandescent
Country: United Kingdom
Sector: UK Financials
Industry: UK Capital Markets

57. ASOS plc

Company Profile: ASOS plc
Market Cap (USD): $459.7 M
Stock: ASC wb_incandescent
Country: United Kingdom
Sector: UK Consumer Discretionary
Industry: UK Internet Retail

58. 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

59. 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

60. Telit Communications plc

Company Profile: Telit Communications plc
Market Cap (USD): $435.1 M (Aug. 1, 2021)
Stock: TCM wb_incandescent
Country: United Kingdom
Sector: UK Technology
Industry: UK Communication Equipment

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