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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
331 FireAngel Safety Technology Group plc FA. $23.1 M

(Jan. 1, 2024)

 United Kingdom UK Industrials UK Security & Protection Services
332 Anglesey Mining plc AYM $22.8 M United Kingdom UK Basic Materials UK Other Industrial Metals & Mining
333 The Mission Group plc TMG $22.6 M United Kingdom UK Communication Services UK Advertising Agencies
334 Power Metal Resources plc POW $22.6 M United Kingdom UK Basic Materials UK Other Industrial Metals & Mining
335 Southern Energy Corp SOUC $22.5 M Canada Canadian Energy Canadian Oil & Gas E&P
336 Mineral & Financial Investments Limited MAFL $22.4 M Cayman Islands Cayman Islands Financials Cayman Islands Asset Management
337 Ingenta plc ING $22.2 M United Kingdom UK Technology UK Software—Application
338 Abingdon Health plc ABDX $21.6 M United Kingdom UK Healthcare UK Diagnostics & Research
339 Pressure Technologies plc PRES $21.3 M United Kingdom UK Energy UK Oil & Gas Equipment & Services
340 The Parkmead Group plc PMG $21.3 M United Kingdom UK Energy UK Oil & Gas E&P
341 Fusion Antibodies plc FAB $21.3 M United Kingdom UK Healthcare UK Biotechnology
342 Alien Metals Limited UFO $21.0 M United Kingdom UK Basic Materials UK Other Precious Metals & Mining
343 Altitude Group plc ALT $20.7 M United Kingdom UK Technology UK Software—Application
344 Artemis Resources Limited ARV $20.3 M Australia Australian Basic Materials Australian Other Industrial Metals & Mining
345 Goldplat plc GDP $20.1 M United Kingdom UK Basic Materials UK Gold
346 Itaconix plc ITX $19.5 M United States US Basic Materials US Specialty Chemicals
347 Xeros Technology Group plc XSG $19.4 M United Kingdom UK Industrials UK Specialty Industrial Machinery
348 Eden Research plc EDEN $19.0 M United Kingdom UK Basic Materials UK Agricultural Inputs
349 Vector Capital plc VCAP $19.0 M

(Jan. 1, 2024)

 United Kingdom UK Financials UK Credit Services
350 Hardide plc HDD $18.8 M United Kingdom UK Basic Materials UK Specialty Chemicals
351 Driver Group plc DRV $18.6 M

(Jan. 1, 2024)

 United Kingdom UK Industrials UK Consulting Services
352 Oriole Resources plc ORR $18.6 M United Kingdom UK Basic Materials UK Gold
353 CAP-XX Limited CPX $18.3 M Australia Australian Technology Australian Electronic Components
354 Kazera Global plc KZG $18.2 M United Kingdom UK Financials UK Asset Management
355 Mothercare plc MTC $18.1 M United Kingdom UK Consumer Discretionary UK Specialty Retail
356 SysGroup plc SYS $18.0 M United Kingdom UK Technology UK Software—Infrastructure
357 Inspiration Healthcare Group plc IHC $17.8 M United Kingdom UK Healthcare UK Medical Devices
358 Oncimmune Holdings plc ONC $17.8 M

(Jan. 1, 2025)

 United Kingdom UK Healthcare UK Biotechnology
359 Cadence Minerals plc KDNC $17.7 M United Kingdom UK Basic Materials UK Other Industrial Metals & Mining
360 Cambridge Cognition Holdings plc COG $17.5 M United Kingdom UK Healthcare UK Health Information Services

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

331. FireAngel Safety Technology Group plc

Company Profile: FireAngel Safety Technology Group plc
Market Cap (USD): $23.1 M (Jan. 1, 2024)
Stock: FA. wb_incandescent
Country: United Kingdom
Sector: UK Industrials
Industry: UK Security & Protection Services

332. Anglesey Mining plc

Company Profile: Anglesey Mining plc
Market Cap (USD): $22.8 M
Stock: AYM wb_incandescent
Country: United Kingdom
Sector: UK Basic Materials
Industry: UK Other Industrial Metals & Mining

333. The Mission Group plc

Company Profile: The Mission Group plc
Market Cap (USD): $22.6 M
Stock: TMG wb_incandescent
Country: United Kingdom
Sector: UK Communication Services
Industry: UK Advertising Agencies

334. Power Metal Resources plc

Company Profile: Power Metal Resources plc
Market Cap (USD): $22.6 M
Stock: POW wb_incandescent
Country: United Kingdom
Sector: UK Basic Materials
Industry: UK Other Industrial Metals & Mining

335. Southern Energy Corp

Company Profile: Southern Energy Corp
Market Cap (USD): $22.5 M
Stock: SOUC wb_incandescent
Country: Canada
Sector: Canadian Energy
Industry: Canadian Oil & Gas E&P

336. Mineral & Financial Investments Limited

Company Profile: Mineral & Financial Investments Limited
Market Cap (USD): $22.4 M
Stock: MAFL wb_incandescent
Country: Cayman Islands
Sector: Cayman Islands Financials
Industry: Cayman Islands Asset Management

337. Ingenta plc

Company Profile: Ingenta plc
Market Cap (USD): $22.2 M
Stock: ING wb_incandescent
Country: United Kingdom
Sector: UK Technology
Industry: UK Software—Application

338. Abingdon Health plc

Company Profile: Abingdon Health plc
Market Cap (USD): $21.6 M
Stock: ABDX wb_incandescent
Country: United Kingdom
Sector: UK Healthcare
Industry: UK Diagnostics & Research

339. Pressure Technologies plc

Company Profile: Pressure Technologies plc
Market Cap (USD): $21.3 M
Stock: PRES wb_incandescent
Country: United Kingdom
Sector: UK Energy
Industry: UK Oil & Gas Equipment & Services

340. The Parkmead Group plc

Company Profile: The Parkmead Group plc
Market Cap (USD): $21.3 M
Stock: PMG wb_incandescent
Country: United Kingdom
Sector: UK Energy
Industry: UK Oil & Gas E&P

341. Fusion Antibodies plc

Company Profile: Fusion Antibodies plc
Market Cap (USD): $21.3 M
Stock: FAB wb_incandescent
Country: United Kingdom
Sector: UK Healthcare
Industry: UK Biotechnology

342. Alien Metals Limited

Company Profile: Alien Metals Limited
Market Cap (USD): $21.0 M
Stock: UFO wb_incandescent
Country: United Kingdom
Sector: UK Basic Materials
Industry: UK Other Precious Metals & Mining

343. Altitude Group plc

Company Profile: Altitude Group plc
Market Cap (USD): $20.7 M
Stock: ALT wb_incandescent
Country: United Kingdom
Sector: UK Technology
Industry: UK Software—Application

344. Artemis Resources Limited

Company Profile: Artemis Resources Limited
Market Cap (USD): $20.3 M
Stock: ARV wb_incandescent
Country: Australia
Sector: Australian Basic Materials
Industry: Australian Other Industrial Metals & Mining

345. Goldplat plc

Company Profile: Goldplat plc
Market Cap (USD): $20.1 M
Stock: GDP wb_incandescent
Country: United Kingdom
Sector: UK Basic Materials
Industry: UK Gold

346. Itaconix plc

Company Profile: Itaconix plc
Market Cap (USD): $19.5 M
Stock: ITX wb_incandescent
Country: United States
Sector: US Basic Materials
Industry: US Specialty Chemicals

347. Xeros Technology Group plc

Company Profile: Xeros Technology Group plc
Market Cap (USD): $19.4 M
Stock: XSG wb_incandescent
Country: United Kingdom
Sector: UK Industrials
Industry: UK Specialty Industrial Machinery

348. Eden Research plc

Company Profile: Eden Research plc
Market Cap (USD): $19.0 M
Stock: EDEN wb_incandescent
Country: United Kingdom
Sector: UK Basic Materials
Industry: UK Agricultural Inputs

349. Vector Capital plc

Company Profile: Vector Capital plc
Market Cap (USD): $19.0 M (Jan. 1, 2024)
Stock: VCAP wb_incandescent
Country: United Kingdom
Sector: UK Financials
Industry: UK Credit Services

350. Hardide plc

Company Profile: Hardide plc
Market Cap (USD): $18.8 M
Stock: HDD wb_incandescent
Country: United Kingdom
Sector: UK Basic Materials
Industry: UK Specialty Chemicals

351. Driver Group plc

Company Profile: Driver Group plc
Market Cap (USD): $18.6 M (Jan. 1, 2024)
Stock: DRV wb_incandescent
Country: United Kingdom
Sector: UK Industrials
Industry: UK Consulting Services

352. Oriole Resources plc

Company Profile: Oriole Resources plc
Market Cap (USD): $18.6 M
Stock: ORR wb_incandescent
Country: United Kingdom
Sector: UK Basic Materials
Industry: UK Gold

353. CAP-XX Limited

Company Profile: CAP-XX Limited
Market Cap (USD): $18.3 M
Stock: CPX wb_incandescent
Country: Australia
Sector: Australian Technology
Industry: Australian Electronic Components

354. Kazera Global plc

Company Profile: Kazera Global plc
Market Cap (USD): $18.2 M
Stock: KZG wb_incandescent
Country: United Kingdom
Sector: UK Financials
Industry: UK Asset Management

355. Mothercare plc

Company Profile: Mothercare plc
Market Cap (USD): $18.1 M
Stock: MTC wb_incandescent
Country: United Kingdom
Sector: UK Consumer Discretionary
Industry: UK Specialty Retail

356. SysGroup plc

Company Profile: SysGroup plc
Market Cap (USD): $18.0 M
Stock: SYS wb_incandescent
Country: United Kingdom
Sector: UK Technology
Industry: UK Software—Infrastructure

357. Inspiration Healthcare Group plc

Company Profile: Inspiration Healthcare Group plc
Market Cap (USD): $17.8 M
Stock: IHC wb_incandescent
Country: United Kingdom
Sector: UK Healthcare
Industry: UK Medical Devices

358. Oncimmune Holdings plc

Company Profile: Oncimmune Holdings plc
Market Cap (USD): $17.8 M (Jan. 1, 2025)
Stock: ONC wb_incandescent
Country: United Kingdom
Sector: UK Healthcare
Industry: UK Biotechnology

359. Cadence Minerals plc

Company Profile: Cadence Minerals plc
Market Cap (USD): $17.7 M
Stock: KDNC wb_incandescent
Country: United Kingdom
Sector: UK Basic Materials
Industry: UK Other Industrial Metals & Mining

360. Cambridge Cognition Holdings plc

Company Profile: Cambridge Cognition Holdings plc
Market Cap (USD): $17.5 M
Stock: COG wb_incandescent
Country: United Kingdom
Sector: UK Healthcare
Industry: UK Health Information Services

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