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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
361 Portmeirion Group plc PMP $17.4 M United Kingdom UK Consumer Discretionary UK Furnishings, Fixtures & Appliances
362 Orchard Funding Group plc ORCH $17.2 M United Kingdom UK Financials UK Credit Services
363 Empresaria Group plc EMR $16.8 M United Kingdom UK Industrials UK Staffing & Employment Services
364 Starcom plc STAR $16.7 M United Kingdom UK Technology UK Scientific & Technical Instruments
365 Brand Architekts Group plc BAR $16.5 M

(Jan. 1, 2025)

 United Kingdom UK Consumer Staples UK Household & Personal Products
366 RTC Group plc RTC $16.4 M United Kingdom UK Industrials UK Staffing & Employment Services
367 Frontier IP Group plc FIPP $16.3 M United Kingdom UK Financials UK Asset Management
368 Galileo Resources plc GLR $16.3 M United Kingdom UK Basic Materials UK Other Industrial Metals & Mining
369 REACT Group plc REAT $16.2 M United Kingdom UK Industrials UK Specialty Business Services
370 Mind Gym plc MIND $16.2 M United Kingdom UK Industrials UK Specialty Business Services
371 Zinc Media Group plc ZIN $16.1 M United Kingdom UK Communication Services UK Entertainment
372 Mosman Oil and Gas Limited MSMN $16.0 M Australia Australian Energy Australian Oil & Gas E&P
373 Jangada Mines plc JAN $15.5 M United Kingdom UK Basic Materials UK Other Industrial Metals & Mining
374 Directa Plus plc DCTA $15.4 M Italy Italian Basic Materials Italian Specialty Chemicals
375 Prospex Energy plc PXEN $15.3 M United Kingdom UK Energy UK Oil & Gas E&P
376 Arcontech Group plc ARC $15.2 M United Kingdom UK Technology UK Software—Application
377 Blackbird plc BIRD $15.2 M United Kingdom UK Technology UK Software—Application
378 Verici Dx plc VRCI $14.8 M United Kingdom UK Healthcare UK Diagnostics & Research
379 IXICO plc IXI $14.7 M United Kingdom UK Healthcare UK Biotechnology
380 Safestay plc SSTY $14.6 M United Kingdom UK Consumer Discretionary UK Lodging
381 Oxford BioDynamics plc OBD $14.4 M United Kingdom UK Healthcare UK Biotechnology
382 Nexus Infrastructure plc NEXS $14.3 M United Kingdom UK Industrials UK Engineering & Construction
383 Shearwater Group plc SWG $14.3 M United Kingdom UK Technology UK Software—Infrastructure
384 RA International Group plc RAI $14.1 M

(Jan. 1, 2025)

 United Arab Emirates United Arab Emirates Industrials United Arab Emirates Engineering & Construction
385 Titon Holdings plc TON $14.0 M United Kingdom UK Industrials UK Building Products & Equipment
386 Croma Security Solutions Group plc CSSG $13.7 M United Kingdom UK Industrials UK Security & Protection Services
387 Plexus Holdings plc POS $13.4 M United Kingdom UK Energy UK Oil & Gas Equipment & Services
388 ZOO Digital Group plc ZOO $13.2 M United Kingdom UK Technology UK Software—Application
389 Bigblu Broadband plc BBB $13.2 M

(July 1, 2025)

 United Kingdom UK Communication Services UK Telecom Services
390 Newmark Security plc NWT $13.0 M United Kingdom UK Industrials UK Security & Protection Services

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

361. Portmeirion Group plc

Company Profile: Portmeirion Group plc
Market Cap (USD): $17.4 M
Stock: PMP wb_incandescent
Country: United Kingdom
Sector: UK Consumer Discretionary
Industry: UK Furnishings, Fixtures & Appliances

362. Orchard Funding Group plc

Company Profile: Orchard Funding Group plc
Market Cap (USD): $17.2 M
Stock: ORCH wb_incandescent
Country: United Kingdom
Sector: UK Financials
Industry: UK Credit Services

363. Empresaria Group plc

Company Profile: Empresaria Group plc
Market Cap (USD): $16.8 M
Stock: EMR wb_incandescent
Country: United Kingdom
Sector: UK Industrials
Industry: UK Staffing & Employment Services

364. Starcom plc

Company Profile: Starcom plc
Market Cap (USD): $16.7 M
Stock: STAR wb_incandescent
Country: United Kingdom
Sector: UK Technology
Industry: UK Scientific & Technical Instruments

365. Brand Architekts Group plc

Company Profile: Brand Architekts Group plc
Market Cap (USD): $16.5 M (Jan. 1, 2025)
Stock: BAR wb_incandescent
Country: United Kingdom
Sector: UK Consumer Staples
Industry: UK Household & Personal Products

366. RTC Group plc

Company Profile: RTC Group plc
Market Cap (USD): $16.4 M
Stock: RTC wb_incandescent
Country: United Kingdom
Sector: UK Industrials
Industry: UK Staffing & Employment Services

367. Frontier IP Group plc

Company Profile: Frontier IP Group plc
Market Cap (USD): $16.3 M
Stock: FIPP wb_incandescent
Country: United Kingdom
Sector: UK Financials
Industry: UK Asset Management

368. Galileo Resources plc

Company Profile: Galileo Resources plc
Market Cap (USD): $16.3 M
Stock: GLR wb_incandescent
Country: United Kingdom
Sector: UK Basic Materials
Industry: UK Other Industrial Metals & Mining

369. REACT Group plc

Company Profile: REACT Group plc
Market Cap (USD): $16.2 M
Stock: REAT wb_incandescent
Country: United Kingdom
Sector: UK Industrials
Industry: UK Specialty Business Services

370. Mind Gym plc

Company Profile: Mind Gym plc
Market Cap (USD): $16.2 M
Stock: MIND wb_incandescent
Country: United Kingdom
Sector: UK Industrials
Industry: UK Specialty Business Services

371. Zinc Media Group plc

Company Profile: Zinc Media Group plc
Market Cap (USD): $16.1 M
Stock: ZIN wb_incandescent
Country: United Kingdom
Sector: UK Communication Services
Industry: UK Entertainment

372. Mosman Oil and Gas Limited

Company Profile: Mosman Oil and Gas Limited
Market Cap (USD): $16.0 M
Stock: MSMN wb_incandescent
Country: Australia
Sector: Australian Energy
Industry: Australian Oil & Gas E&P

373. Jangada Mines plc

Company Profile: Jangada Mines plc
Market Cap (USD): $15.5 M
Stock: JAN wb_incandescent
Country: United Kingdom
Sector: UK Basic Materials
Industry: UK Other Industrial Metals & Mining

374. Directa Plus plc

Company Profile: Directa Plus plc
Market Cap (USD): $15.4 M
Stock: DCTA wb_incandescent
Country: Italy
Sector: Italian Basic Materials
Industry: Italian Specialty Chemicals

375. Prospex Energy plc

Company Profile: Prospex Energy plc
Market Cap (USD): $15.3 M
Stock: PXEN wb_incandescent
Country: United Kingdom
Sector: UK Energy
Industry: UK Oil & Gas E&P

376. Arcontech Group plc

Company Profile: Arcontech Group plc
Market Cap (USD): $15.2 M
Stock: ARC wb_incandescent
Country: United Kingdom
Sector: UK Technology
Industry: UK Software—Application

377. Blackbird plc

Company Profile: Blackbird plc
Market Cap (USD): $15.2 M
Stock: BIRD wb_incandescent
Country: United Kingdom
Sector: UK Technology
Industry: UK Software—Application

378. Verici Dx plc

Company Profile: Verici Dx plc
Market Cap (USD): $14.8 M
Stock: VRCI wb_incandescent
Country: United Kingdom
Sector: UK Healthcare
Industry: UK Diagnostics & Research

379. IXICO plc

Company Profile: IXICO plc
Market Cap (USD): $14.7 M
Stock: IXI wb_incandescent
Country: United Kingdom
Sector: UK Healthcare
Industry: UK Biotechnology

380. Safestay plc

Company Profile: Safestay plc
Market Cap (USD): $14.6 M
Stock: SSTY wb_incandescent
Country: United Kingdom
Sector: UK Consumer Discretionary
Industry: UK Lodging

381. Oxford BioDynamics plc

Company Profile: Oxford BioDynamics plc
Market Cap (USD): $14.4 M
Stock: OBD wb_incandescent
Country: United Kingdom
Sector: UK Healthcare
Industry: UK Biotechnology

382. Nexus Infrastructure plc

Company Profile: Nexus Infrastructure plc
Market Cap (USD): $14.3 M
Stock: NEXS wb_incandescent
Country: United Kingdom
Sector: UK Industrials
Industry: UK Engineering & Construction

383. Shearwater Group plc

Company Profile: Shearwater Group plc
Market Cap (USD): $14.3 M
Stock: SWG wb_incandescent
Country: United Kingdom
Sector: UK Technology
Industry: UK Software—Infrastructure

384. RA International Group plc

Company Profile: RA International Group plc
Market Cap (USD): $14.1 M (Jan. 1, 2025)
Stock: RAI wb_incandescent
Country: United Arab Emirates
Sector: United Arab Emirates Industrials
Industry: United Arab Emirates Engineering & Construction

385. Titon Holdings plc

Company Profile: Titon Holdings plc
Market Cap (USD): $14.0 M
Stock: TON wb_incandescent
Country: United Kingdom
Sector: UK Industrials
Industry: UK Building Products & Equipment

386. Croma Security Solutions Group plc

Company Profile: Croma Security Solutions Group plc
Market Cap (USD): $13.7 M
Stock: CSSG wb_incandescent
Country: United Kingdom
Sector: UK Industrials
Industry: UK Security & Protection Services

387. Plexus Holdings plc

Company Profile: Plexus Holdings plc
Market Cap (USD): $13.4 M
Stock: POS wb_incandescent
Country: United Kingdom
Sector: UK Energy
Industry: UK Oil & Gas Equipment & Services

388. ZOO Digital Group plc

Company Profile: ZOO Digital Group plc
Market Cap (USD): $13.2 M
Stock: ZOO wb_incandescent
Country: United Kingdom
Sector: UK Technology
Industry: UK Software—Application

389. Bigblu Broadband plc

Company Profile: Bigblu Broadband plc
Market Cap (USD): $13.2 M (July 1, 2025)
Stock: BBB wb_incandescent
Country: United Kingdom
Sector: UK Communication Services
Industry: UK Telecom Services

390. Newmark Security plc

Company Profile: Newmark Security plc
Market Cap (USD): $13.0 M
Stock: NWT wb_incandescent
Country: United Kingdom
Sector: UK Industrials
Industry: UK Security & Protection Services

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