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Top FTSE AIM 100 Companies by Market Cap and Stocks in 2025

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.

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Top FTSE AIM 100 Companies Ranking by Market Cap as of Jan. 1, 2025

Ranking Company Stock Market Cap (USD) Country Sector Industry
91 Randall & Quilter Investment Holdings Ltd RQIH wb_incandescent $48.6 M

(Jan. 1, 2024)

 Bermuda Bermuda Financials Bermuda Insurance—Specialty
92 Novacyt SA NCYT wb_incandescent $48.3 M United Kingdom UK Healthcare UK Diagnostics & Research
93 Renalytix AI plc RENX wb_incandescent $48.1 M United Kingdom UK Healthcare UK Diagnostics & Research
94 Naked Wines plc WINE wb_incandescent $43.4 M United Kingdom UK Consumer Staples UK Beverages—Wineries & Distilleries
95 Proton Motor Power Systems plc PPS wb_incandescent $8.1 M United Kingdom UK Industrials UK Electrical Equipment & Parts
96 Scapa Group plc SCPA wb_incandescent United Kingdom UK Basic Materials UK Specialty Chemicals
97 Applegreen plc APGN wb_incandescent Ireland Irish Consumer Discretionary Irish Specialty Retail
98 MaxCyte, Inc. MXCT wb_incandescent United States US Healthcare US Diagnostics & Research

Top FTSE AIM 100 Companies Ranking by Market Cap as of Jan. 1, 2025

91. Randall & Quilter Investment Holdings Ltd

Company Profile: Randall & Quilter Investment Holdings Ltd
Market Cap (USD): $48.6 M (Jan. 1, 2024)
Stock: RQIH wb_incandescent
Country: Bermuda
Sector: Bermuda Financials
Industry: Bermuda Insurance—Specialty

92. Novacyt SA

Company Profile: Novacyt SA
Market Cap (USD): $48.3 M
Stock: NCYT wb_incandescent
Country: United Kingdom
Sector: UK Healthcare
Industry: UK Diagnostics & Research

93. Renalytix AI plc

Company Profile: Renalytix AI plc
Market Cap (USD): $48.1 M
Stock: RENX wb_incandescent
Country: United Kingdom
Sector: UK Healthcare
Industry: UK Diagnostics & Research

94. Naked Wines plc

Company Profile: Naked Wines plc
Market Cap (USD): $43.4 M
Stock: WINE wb_incandescent
Country: United Kingdom
Sector: UK Consumer Staples
Industry: UK Beverages—Wineries & Distilleries

95. Proton Motor Power Systems plc

Company Profile: Proton Motor Power Systems plc
Market Cap (USD): $8.1 M
Stock: PPS wb_incandescent
Country: United Kingdom
Sector: UK Industrials
Industry: UK Electrical Equipment & Parts

96. Scapa Group plc

Company Profile: Scapa Group plc
Stock: SCPA wb_incandescent
Country: United Kingdom
Sector: UK Basic Materials
Industry: UK Specialty Chemicals

97. Applegreen plc

Company Profile: Applegreen plc
Stock: APGN wb_incandescent
Country: Ireland
Sector: Irish Consumer Discretionary
Industry: Irish Specialty Retail

98. MaxCyte, Inc.

Company Profile: MaxCyte, Inc.
Stock: MXCT wb_incandescent
Country: United States
Sector: US Healthcare
Industry: US Diagnostics & Research

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