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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
121 Tribal Group plc TRB $194.6 M United Kingdom UK Technology UK Software—Application
122 Focusrite plc TUNE $189.5 M United Kingdom UK Consumer Discretionary UK Leisure
123 Gateley (Holdings) plc GTLY $188.2 M United Kingdom UK Industrials UK Consulting Services
124 Duke Royalty Limited DUKE $184.2 M United Kingdom UK Financials UK Asset Management
125 Quartix Holdings plc QTX $179.2 M United Kingdom UK Technology UK Scientific & Technical Instruments
126 Trident Royalties plc TRR $177.6 M

(July 1, 2024)

 United Kingdom UK Basic Materials UK Other Industrial Metals & Mining
127 Inspired Energy plc INSE $176.7 M

(July 1, 2025)

 United Kingdom UK Industrials UK Specialty Business Services
128 Shanta Gold Limited SHG $174.0 M

(Jan. 1, 2024)

 United Kingdom UK Basic Materials UK Gold
129 Falcon Oil & Gas Ltd. FOG $173.7 M Ireland Irish Energy Irish Oil & Gas E&P
130 Camellia plc CAM $170.3 M United Kingdom UK Consumer Staples UK Farm Products
131 Mercia Asset Management plc MERC $170.1 M United Kingdom UK Financials UK Asset Management
132 Jadestone Energy Inc. JSE $169.6 M Singapore Singaporean Energy Singaporean Oil & Gas E&P
133 Ramsdens Holdings plc RFX $167.6 M United Kingdom UK Industrials UK Conglomerates
134 accesso Technology Group plc ACSO $162.9 M United Kingdom UK Technology UK Software—Application
135 TruFin plc TRU $162.2 M United Kingdom UK Financials UK Credit Services
136 Pantheon Resources plc PANR $161.8 M United Kingdom UK Energy UK Oil & Gas E&P
137 Gaming Realms plc GMR $159.6 M United Kingdom UK Consumer Discretionary UK Gambling
138 Eurasia Mining plc EUA $156.9 M United Kingdom UK Basic Materials UK Other Precious Metals & Mining
139 Somero Enterprises, Inc. SOM $156.4 M United States US Industrials US Farm & Heavy Construction Machinery
140 EKF Diagnostics Holdings plc EKF $155.4 M United Kingdom UK Healthcare UK Diagnostics & Research
141 AFC Energy plc AFC $154.3 M United Kingdom UK Industrials UK Electrical Equipment & Parts
142 Accrol Group Holdings plc ACRL $153.5 M

(Jan. 1, 2024)

 United Kingdom UK Consumer Staples UK Household & Personal Products
143 Invinity Energy Systems plc IES $153.1 M United Kingdom UK Utilities UK Utilities—Diversified
144 i3 Energy plc I3E $149.3 M

(July 1, 2024)

 United Kingdom UK Energy UK Oil & Gas E&P
145 Jubilee Metals Group plc JLP $149.3 M United Kingdom UK Basic Materials UK Other Industrial Metals & Mining
146 Diaceutics plc DXRX $146.3 M United Kingdom UK Healthcare UK Biotechnology
147 Strix Group plc KETL $143.1 M United Kingdom UK Technology UK Electronic Components
148 Cornish Metals, Inc. CUSN $142.3 M

(July 1, 2025)

 Canada Canadian Basic Materials Canadian Other Industrial Metals & Mining
149 Shield Therapeutics plc STX $140.8 M United Kingdom UK Healthcare UK Drug Manufacturers—Specialty & Generic
150 Eleco plc ELCO $140.4 M United Kingdom UK Technology UK Software—Application

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

121. Tribal Group plc

Company Profile: Tribal Group plc
Market Cap (USD): $194.6 M
Stock: TRB wb_incandescent
Country: United Kingdom
Sector: UK Technology
Industry: UK Software—Application

122. 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

123. Gateley (Holdings) plc

Company Profile: Gateley (Holdings) plc
Market Cap (USD): $188.2 M
Stock: GTLY wb_incandescent
Country: United Kingdom
Sector: UK Industrials
Industry: UK Consulting Services

124. Duke Royalty Limited

Company Profile: Duke Royalty Limited
Market Cap (USD): $184.2 M
Stock: DUKE wb_incandescent
Country: United Kingdom
Sector: UK Financials
Industry: UK Asset Management

125. Quartix Holdings plc

Company Profile: Quartix Holdings plc
Market Cap (USD): $179.2 M
Stock: QTX wb_incandescent
Country: United Kingdom
Sector: UK Technology
Industry: UK Scientific & Technical Instruments

126. Trident Royalties plc

Company Profile: Trident Royalties plc
Market Cap (USD): $177.6 M (July 1, 2024)
Stock: TRR wb_incandescent
Country: United Kingdom
Sector: UK Basic Materials
Industry: UK Other Industrial Metals & Mining

127. Inspired Energy plc

Company Profile: Inspired Energy plc
Market Cap (USD): $176.7 M (July 1, 2025)
Stock: INSE wb_incandescent
Country: United Kingdom
Sector: UK Industrials
Industry: UK Specialty Business Services

128. Shanta Gold Limited

Company Profile: Shanta Gold Limited
Market Cap (USD): $174.0 M (Jan. 1, 2024)
Stock: SHG wb_incandescent
Country: United Kingdom
Sector: UK Basic Materials
Industry: UK Gold

129. Falcon Oil & Gas Ltd.

Company Profile: Falcon Oil & Gas Ltd.
Market Cap (USD): $173.7 M
Stock: FOG wb_incandescent
Country: Ireland
Sector: Irish Energy
Industry: Irish Oil & Gas E&P

130. Camellia plc

Company Profile: Camellia plc
Market Cap (USD): $170.3 M
Stock: CAM wb_incandescent
Country: United Kingdom
Sector: UK Consumer Staples
Industry: UK Farm Products

131. Mercia Asset Management plc

Company Profile: Mercia Asset Management plc
Market Cap (USD): $170.1 M
Stock: MERC wb_incandescent
Country: United Kingdom
Sector: UK Financials
Industry: UK Asset Management

132. 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

133. Ramsdens Holdings plc

Company Profile: Ramsdens Holdings plc
Market Cap (USD): $167.6 M
Stock: RFX wb_incandescent
Country: United Kingdom
Sector: UK Industrials
Industry: UK Conglomerates

134. accesso Technology Group plc

Company Profile: accesso Technology Group plc
Market Cap (USD): $162.9 M
Stock: ACSO wb_incandescent
Country: United Kingdom
Sector: UK Technology
Industry: UK Software—Application

135. TruFin plc

Company Profile: TruFin plc
Market Cap (USD): $162.2 M
Stock: TRU wb_incandescent
Country: United Kingdom
Sector: UK Financials
Industry: UK Credit Services

136. Pantheon Resources plc

Company Profile: Pantheon Resources plc
Market Cap (USD): $161.8 M
Stock: PANR wb_incandescent
Country: United Kingdom
Sector: UK Energy
Industry: UK Oil & Gas E&P

137. Gaming Realms plc

Company Profile: Gaming Realms plc
Market Cap (USD): $159.6 M
Stock: GMR wb_incandescent
Country: United Kingdom
Sector: UK Consumer Discretionary
Industry: UK Gambling

138. 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

139. Somero Enterprises, Inc.

Company Profile: Somero Enterprises, Inc.
Market Cap (USD): $156.4 M
Stock: SOM wb_incandescent
Country: United States
Sector: US Industrials
Industry: US Farm & Heavy Construction Machinery

140. EKF Diagnostics Holdings plc

Company Profile: EKF Diagnostics Holdings plc
Market Cap (USD): $155.4 M
Stock: EKF wb_incandescent
Country: United Kingdom
Sector: UK Healthcare
Industry: UK Diagnostics & Research

141. AFC Energy plc

Company Profile: AFC Energy plc
Market Cap (USD): $154.3 M
Stock: AFC wb_incandescent
Country: United Kingdom
Sector: UK Industrials
Industry: UK Electrical Equipment & Parts

142. Accrol Group Holdings plc

Company Profile: Accrol Group Holdings plc
Market Cap (USD): $153.5 M (Jan. 1, 2024)
Stock: ACRL wb_incandescent
Country: United Kingdom
Sector: UK Consumer Staples
Industry: UK Household & Personal Products

143. Invinity Energy Systems plc

Company Profile: Invinity Energy Systems plc
Market Cap (USD): $153.1 M
Stock: IES wb_incandescent
Country: United Kingdom
Sector: UK Utilities
Industry: UK Utilities—Diversified

144. i3 Energy plc

Company Profile: i3 Energy plc
Market Cap (USD): $149.3 M (July 1, 2024)
Stock: I3E wb_incandescent
Country: United Kingdom
Sector: UK Energy
Industry: UK Oil & Gas E&P

145. Jubilee Metals Group plc

Company Profile: Jubilee Metals Group plc
Market Cap (USD): $149.3 M
Stock: JLP wb_incandescent
Country: United Kingdom
Sector: UK Basic Materials
Industry: UK Other Industrial Metals & Mining

146. Diaceutics plc

Company Profile: Diaceutics plc
Market Cap (USD): $146.3 M
Stock: DXRX wb_incandescent
Country: United Kingdom
Sector: UK Healthcare
Industry: UK Biotechnology

147. 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

148. Cornish Metals, Inc.

Company Profile: Cornish Metals, Inc.
Market Cap (USD): $142.3 M (July 1, 2025)
Stock: CUSN wb_incandescent
Country: Canada
Sector: Canadian Basic Materials
Industry: Canadian Other Industrial Metals & Mining

149. Shield Therapeutics plc

Company Profile: Shield Therapeutics plc
Market Cap (USD): $140.8 M
Stock: STX wb_incandescent
Country: United Kingdom
Sector: UK Healthcare
Industry: UK Drug Manufacturers—Specialty & Generic

150. Eleco plc

Company Profile: Eleco plc
Market Cap (USD): $140.4 M
Stock: ELCO wb_incandescent
Country: United Kingdom
Sector: UK Technology
Industry: UK Software—Application

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