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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
61 Central Asia Metals plc CAML $432.8 M United Kingdom UK Basic Materials UK Copper
62 FW Thorpe plc TFW $430.0 M United Kingdom UK Industrials UK Electrical Equipment & Parts
63 Next Fifteen Communications Group plc NFC $427.5 M United Kingdom UK Communication Services UK Advertising Agencies
64 RWS Holdings plc RWS $421.5 M United Kingdom UK Industrials UK Consulting Services
65 Alliance Pharma plc APH $413.8 M

(Jan. 1, 2025)

 United Kingdom UK Healthcare UK Drug Manufacturers—Specialty & Generic
66 AB Dynamics plc ABDP $403.6 M United Kingdom UK Consumer Discretionary UK Auto Parts
67 YouGov plc YOU $397.5 M United Kingdom UK Communication Services UK Advertising Agencies
68 boohoo group plc BOO $390.2 M United Kingdom UK Consumer Discretionary UK Internet Retail
69 Tremor International Ltd TRMR $357.8 M

(Jan. 1, 2024)

 Israel Israeli Communication Services Israeli Advertising Agencies
70 Avacta Group plc AVCT $335.6 M United Kingdom UK Healthcare UK Biotechnology
71 Brooks Macdonald Group plc BRK $331.1 M United Kingdom UK Financials UK Asset Management
72 Andrews Sykes Group plc ASY $281.7 M United Kingdom UK Industrials UK Rental & Leasing Services
73 dotdigital Group plc DOTD $280.7 M United Kingdom UK Technology UK Software—Application
74 Benchmark Holdings plc BMK $252.1 M

(July 1, 2025)

 United Kingdom UK Healthcare UK Drug Manufacturers—Specialty & Generic
75 Midwich Group plc MIDW $250.7 M United Kingdom UK Technology UK Electronics & Computer Distribution
76 Impax Asset Management Group plc IPX $249.5 M United Kingdom UK Financials UK Asset Management
77 Frontier Developments plc FDEV $230.7 M United Kingdom UK Communication Services UK Electronic Gaming & Multimedia
78 Gooch & Housego plc GHH $224.0 M United Kingdom UK Technology UK Electronic Components
79 Knights Group Holdings plc KGH $202.6 M United Kingdom UK Industrials UK Specialty Business Services
80 Focusrite plc TUNE $189.5 M United Kingdom UK Consumer Discretionary UK Leisure
81 Jadestone Energy Inc. JSE $169.6 M Singapore Singaporean Energy Singaporean Oil & Gas E&P
82 Eurasia Mining plc EUA $156.9 M United Kingdom UK Basic Materials UK Other Precious Metals & Mining
83 Strix Group plc KETL $143.1 M United Kingdom UK Technology UK Electronic Components
84 Bioventix plc BVXP $130.8 M United Kingdom UK Healthcare UK Biotechnology
85 Watkin Jones plc WJG $101.4 M United Kingdom UK Consumer Discretionary UK Residential Construction
86 Naked Wines plc WINE $74.6 M

(July 1, 2025)

 United Kingdom UK Consumer Staples UK Beverages—Wineries & Distilleries
87 IQE plc IQE $67.2 M United Kingdom UK Technology UK Semiconductor Equipment & Materials
88 IG Design Group plc IGR $66.1 M United Kingdom UK Consumer Discretionary UK Specialty Retail
89 Victoria plc VCP $65.4 M United Kingdom UK Consumer Discretionary UK Furnishings, Fixtures & Appliances
90 Creo Medical Limited CREO $56.3 M United Kingdom UK Healthcare UK Medical Devices

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

61. 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

62. 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

63. Next Fifteen Communications Group plc

Company Profile: Next Fifteen Communications Group plc
Market Cap (USD): $427.5 M
Stock: NFC wb_incandescent
Country: United Kingdom
Sector: UK Communication Services
Industry: UK Advertising Agencies

64. 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

65. Alliance Pharma plc

Company Profile: Alliance Pharma plc
Market Cap (USD): $413.8 M (Jan. 1, 2025)
Stock: APH wb_incandescent
Country: United Kingdom
Sector: UK Healthcare
Industry: UK Drug Manufacturers—Specialty & Generic

66. AB Dynamics plc

Company Profile: AB Dynamics plc
Market Cap (USD): $403.6 M
Stock: ABDP wb_incandescent
Country: United Kingdom
Sector: UK Consumer Discretionary
Industry: UK Auto Parts

67. YouGov plc

Company Profile: YouGov plc
Market Cap (USD): $397.5 M
Stock: YOU wb_incandescent
Country: United Kingdom
Sector: UK Communication Services
Industry: UK Advertising Agencies

68. boohoo group plc

Company Profile: boohoo group plc
Market Cap (USD): $390.2 M
Stock: BOO wb_incandescent
Country: United Kingdom
Sector: UK Consumer Discretionary
Industry: UK Internet Retail

69. Tremor International Ltd

Company Profile: Tremor International Ltd
Market Cap (USD): $357.8 M (Jan. 1, 2024)
Stock: TRMR wb_incandescent
Country: Israel
Sector: Israeli Communication Services
Industry: Israeli Advertising Agencies

70. Avacta Group plc

Company Profile: Avacta Group plc
Market Cap (USD): $335.6 M
Stock: AVCT wb_incandescent
Country: United Kingdom
Sector: UK Healthcare
Industry: UK Biotechnology

71. Brooks Macdonald Group plc

Company Profile: Brooks Macdonald Group plc
Market Cap (USD): $331.1 M
Stock: BRK wb_incandescent
Country: United Kingdom
Sector: UK Financials
Industry: UK Asset Management

72. Andrews Sykes Group plc

Company Profile: Andrews Sykes Group plc
Market Cap (USD): $281.7 M
Stock: ASY wb_incandescent
Country: United Kingdom
Sector: UK Industrials
Industry: UK Rental & Leasing Services

73. dotdigital Group plc

Company Profile: dotdigital Group plc
Market Cap (USD): $280.7 M
Stock: DOTD wb_incandescent
Country: United Kingdom
Sector: UK Technology
Industry: UK Software—Application

74. Benchmark Holdings plc

Company Profile: Benchmark Holdings plc
Market Cap (USD): $252.1 M (July 1, 2025)
Stock: BMK wb_incandescent
Country: United Kingdom
Sector: UK Healthcare
Industry: UK Drug Manufacturers—Specialty & Generic

75. Midwich Group plc

Company Profile: Midwich Group plc
Market Cap (USD): $250.7 M
Stock: MIDW wb_incandescent
Country: United Kingdom
Sector: UK Technology
Industry: UK Electronics & Computer Distribution

76. Impax Asset Management Group plc

Company Profile: Impax Asset Management Group plc
Market Cap (USD): $249.5 M
Stock: IPX wb_incandescent
Country: United Kingdom
Sector: UK Financials
Industry: UK Asset Management

77. Frontier Developments plc

Company Profile: Frontier Developments plc
Market Cap (USD): $230.7 M
Stock: FDEV wb_incandescent
Country: United Kingdom
Sector: UK Communication Services
Industry: UK Electronic Gaming & Multimedia

78. Gooch & Housego plc

Company Profile: Gooch & Housego plc
Market Cap (USD): $224.0 M
Stock: GHH wb_incandescent
Country: United Kingdom
Sector: UK Technology
Industry: UK Electronic Components

79. Knights Group Holdings plc

Company Profile: Knights Group Holdings plc
Market Cap (USD): $202.6 M
Stock: KGH wb_incandescent
Country: United Kingdom
Sector: UK Industrials
Industry: UK Specialty Business Services

80. Focusrite plc

Company Profile: Focusrite plc
Market Cap (USD): $189.5 M
Stock: TUNE wb_incandescent
Country: United Kingdom
Sector: UK Consumer Discretionary
Industry: UK Leisure

81. Jadestone Energy Inc.

Company Profile: Jadestone Energy Inc.
Market Cap (USD): $169.6 M
Stock: JSE wb_incandescent
Country: Singapore
Sector: Singaporean Energy
Industry: Singaporean Oil & Gas E&P

82. Eurasia Mining plc

Company Profile: Eurasia Mining plc
Market Cap (USD): $156.9 M
Stock: EUA wb_incandescent
Country: United Kingdom
Sector: UK Basic Materials
Industry: UK Other Precious Metals & Mining

83. Strix Group plc

Company Profile: Strix Group plc
Market Cap (USD): $143.1 M
Stock: KETL wb_incandescent
Country: United Kingdom
Sector: UK Technology
Industry: UK Electronic Components

84. Bioventix plc

Company Profile: Bioventix plc
Market Cap (USD): $130.8 M
Stock: BVXP wb_incandescent
Country: United Kingdom
Sector: UK Healthcare
Industry: UK Biotechnology

85. Watkin Jones plc

Company Profile: Watkin Jones plc
Market Cap (USD): $101.4 M
Stock: WJG wb_incandescent
Country: United Kingdom
Sector: UK Consumer Discretionary
Industry: UK Residential Construction

86. Naked Wines plc

Company Profile: Naked Wines plc
Market Cap (USD): $74.6 M (July 1, 2025)
Stock: WINE wb_incandescent
Country: United Kingdom
Sector: UK Consumer Staples
Industry: UK Beverages—Wineries & Distilleries

87. IQE plc

Company Profile: IQE plc
Market Cap (USD): $67.2 M
Stock: IQE wb_incandescent
Country: United Kingdom
Sector: UK Technology
Industry: UK Semiconductor Equipment & Materials

88. IG Design Group plc

Company Profile: IG Design Group plc
Market Cap (USD): $66.1 M
Stock: IGR wb_incandescent
Country: United Kingdom
Sector: UK Consumer Discretionary
Industry: UK Specialty Retail

89. Victoria plc

Company Profile: Victoria plc
Market Cap (USD): $65.4 M
Stock: VCP wb_incandescent
Country: United Kingdom
Sector: UK Consumer Discretionary
Industry: UK Furnishings, Fixtures & Appliances

90. Creo Medical Limited

Company Profile: Creo Medical Limited
Market Cap (USD): $56.3 M
Stock: CREO wb_incandescent
Country: United Kingdom
Sector: UK Healthcare
Industry: UK Medical Devices

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