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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
451 Feedback plc FDBK $6.5 M United Kingdom UK Healthcare UK Health Information Services
452 Touchstar plc TST $6.5 M United Kingdom UK Technology UK Computer Hardware
453 UK Oil & Gas plc UKOG $6.5 M United Kingdom UK Energy UK Oil & Gas E&P
454 MobilityOne Limited MBO $6.4 M Malaysia Malaysian Technology Malaysian Information Technology Services
455 Tern plc TERN $6.3 M United Kingdom UK Technology UK Software—Application
456 MyHealthChecked plc MHC $6.3 M United Kingdom UK Healthcare UK Medical Devices
457 Trakm8 Holdings plc TRAK $6.3 M

(July 1, 2025)

 United Kingdom UK Technology UK Scientific & Technical Instruments
458 Blue Star Capital plc BLU $5.9 M United Kingdom UK Financials UK Asset Management
459 N4 Pharma plc N4P $5.9 M United Kingdom UK Healthcare UK Drug Manufacturers—Specialty & Generic
460 GRC International Group plc GRC $5.8 M

(Jan. 1, 2024)

 United Kingdom UK Technology UK Information Technology Services
461 Norman Broadbent plc NBB $5.8 M United Kingdom UK Industrials UK Staffing & Employment Services
462 Thruvision Group plc THRU $5.7 M United Kingdom UK Industrials UK Security & Protection Services
463 Surgical Innovations Group plc SUN $5.6 M United Kingdom UK Healthcare UK Medical Devices
464 Argentex Group plc AGFX $5.6 M

(July 1, 2025)

 United Kingdom UK Financials UK Capital Markets
465 SpaceandPeople plc SAL $5.4 M United Kingdom UK Communication Services UK Advertising Agencies
466 Westminster Group plc WSG $5.2 M United Kingdom UK Industrials UK Security & Protection Services
467 Chamberlin plc CMH $5.1 M

(Jan. 1, 2024)

 United Kingdom UK Industrials UK Specialty Industrial Machinery
468 Woodbois Limited WBI $5.1 M

(July 1, 2025)

 United Kingdom UK Basic Materials UK Lumber & Wood Production
469 ANGLE plc AGL $4.9 M United Kingdom UK Healthcare UK Diagnostics & Research
470 Serinus Energy plc SENX $4.8 M

(Jan. 1, 2025)

 United Kingdom UK Energy UK Oil & Gas E&P
471 Premier African Minerals Limited PREM $4.8 M Virgin Islands (British) Virgin Islands (British) Basic Materials Virgin Islands (British) Other Industrial Metals & Mining
472 Bowleven plc BLVN $4.8 M

(July 1, 2024)

 United Kingdom UK Energy UK Oil & Gas Drilling
473 Catenae Innovation plc CTAI $4.6 M United Kingdom UK Technology UK Software—Infrastructure
474 Byotrol plc BYOT $4.5 M

(Jan. 1, 2024)

 United Kingdom UK Consumer Staples UK Household & Personal Products
475 Union Jack Oil plc UJO $4.4 M United Kingdom UK Energy UK Oil & Gas E&P
476 Coro Energy plc CORO $4.4 M United Kingdom UK Energy UK Oil & Gas E&P
477 Ascent Resources plc AST $4.4 M United Kingdom UK Energy UK Oil & Gas E&P
478 Getech Group plc GTC $4.2 M United Kingdom UK Energy UK Oil & Gas Equipment & Services
479 TomCo Energy plc TOM $4.2 M United Kingdom UK Energy UK Oil & Gas Drilling
480 Botswana Diamonds plc BOD $4.1 M Ireland Irish Basic Materials Irish Other Precious Metals & Mining

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

451. Feedback plc

Company Profile: Feedback plc
Market Cap (USD): $6.5 M
Stock: FDBK wb_incandescent
Country: United Kingdom
Sector: UK Healthcare
Industry: UK Health Information Services

452. Touchstar plc

Company Profile: Touchstar plc
Market Cap (USD): $6.5 M
Stock: TST wb_incandescent
Country: United Kingdom
Sector: UK Technology
Industry: UK Computer Hardware

453. UK Oil & Gas plc

Company Profile: UK Oil & Gas plc
Market Cap (USD): $6.5 M
Stock: UKOG wb_incandescent
Country: United Kingdom
Sector: UK Energy
Industry: UK Oil & Gas E&P

454. MobilityOne Limited

Company Profile: MobilityOne Limited
Market Cap (USD): $6.4 M
Stock: MBO wb_incandescent
Country: Malaysia
Sector: Malaysian Technology
Industry: Malaysian Information Technology Services

455. Tern plc

Company Profile: Tern plc
Market Cap (USD): $6.3 M
Stock: TERN wb_incandescent
Country: United Kingdom
Sector: UK Technology
Industry: UK Software—Application

456. MyHealthChecked plc

Company Profile: MyHealthChecked plc
Market Cap (USD): $6.3 M
Stock: MHC wb_incandescent
Country: United Kingdom
Sector: UK Healthcare
Industry: UK Medical Devices

457. Trakm8 Holdings plc

Company Profile: Trakm8 Holdings plc
Market Cap (USD): $6.3 M (July 1, 2025)
Stock: TRAK wb_incandescent
Country: United Kingdom
Sector: UK Technology
Industry: UK Scientific & Technical Instruments

458. Blue Star Capital plc

Company Profile: Blue Star Capital plc
Market Cap (USD): $5.9 M
Stock: BLU wb_incandescent
Country: United Kingdom
Sector: UK Financials
Industry: UK Asset Management

459. N4 Pharma plc

Company Profile: N4 Pharma plc
Market Cap (USD): $5.9 M
Stock: N4P wb_incandescent
Country: United Kingdom
Sector: UK Healthcare
Industry: UK Drug Manufacturers—Specialty & Generic

460. GRC International Group plc

Company Profile: GRC International Group plc
Market Cap (USD): $5.8 M (Jan. 1, 2024)
Stock: GRC wb_incandescent
Country: United Kingdom
Sector: UK Technology
Industry: UK Information Technology Services

461. Norman Broadbent plc

Company Profile: Norman Broadbent plc
Market Cap (USD): $5.8 M
Stock: NBB wb_incandescent
Country: United Kingdom
Sector: UK Industrials
Industry: UK Staffing & Employment Services

462. Thruvision Group plc

Company Profile: Thruvision Group plc
Market Cap (USD): $5.7 M
Stock: THRU wb_incandescent
Country: United Kingdom
Sector: UK Industrials
Industry: UK Security & Protection Services

463. Surgical Innovations Group plc

Company Profile: Surgical Innovations Group plc
Market Cap (USD): $5.6 M
Stock: SUN wb_incandescent
Country: United Kingdom
Sector: UK Healthcare
Industry: UK Medical Devices

464. Argentex Group plc

Company Profile: Argentex Group plc
Market Cap (USD): $5.6 M (July 1, 2025)
Stock: AGFX wb_incandescent
Country: United Kingdom
Sector: UK Financials
Industry: UK Capital Markets

465. SpaceandPeople plc

Company Profile: SpaceandPeople plc
Market Cap (USD): $5.4 M
Stock: SAL wb_incandescent
Country: United Kingdom
Sector: UK Communication Services
Industry: UK Advertising Agencies

466. Westminster Group plc

Company Profile: Westminster Group plc
Market Cap (USD): $5.2 M
Stock: WSG wb_incandescent
Country: United Kingdom
Sector: UK Industrials
Industry: UK Security & Protection Services

467. Chamberlin plc

Company Profile: Chamberlin plc
Market Cap (USD): $5.1 M (Jan. 1, 2024)
Stock: CMH wb_incandescent
Country: United Kingdom
Sector: UK Industrials
Industry: UK Specialty Industrial Machinery

468. Woodbois Limited

Company Profile: Woodbois Limited
Market Cap (USD): $5.1 M (July 1, 2025)
Stock: WBI wb_incandescent
Country: United Kingdom
Sector: UK Basic Materials
Industry: UK Lumber & Wood Production

469. ANGLE plc

Company Profile: ANGLE plc
Market Cap (USD): $4.9 M
Stock: AGL wb_incandescent
Country: United Kingdom
Sector: UK Healthcare
Industry: UK Diagnostics & Research

470. Serinus Energy plc

Company Profile: Serinus Energy plc
Market Cap (USD): $4.8 M (Jan. 1, 2025)
Stock: SENX wb_incandescent
Country: United Kingdom
Sector: UK Energy
Industry: UK Oil & Gas E&P

471. Premier African Minerals Limited

Company Profile: Premier African Minerals Limited
Market Cap (USD): $4.8 M
Stock: PREM wb_incandescent
Country: Virgin Islands (British)
Sector: Virgin Islands (British) Basic Materials
Industry: Virgin Islands (British) Other Industrial Metals & Mining

472. Bowleven plc

Company Profile: Bowleven plc
Market Cap (USD): $4.8 M (July 1, 2024)
Stock: BLVN wb_incandescent
Country: United Kingdom
Sector: UK Energy
Industry: UK Oil & Gas Drilling

473. Catenae Innovation plc

Company Profile: Catenae Innovation plc
Market Cap (USD): $4.6 M
Stock: CTAI wb_incandescent
Country: United Kingdom
Sector: UK Technology
Industry: UK Software—Infrastructure

474. Byotrol plc

Company Profile: Byotrol plc
Market Cap (USD): $4.5 M (Jan. 1, 2024)
Stock: BYOT wb_incandescent
Country: United Kingdom
Sector: UK Consumer Staples
Industry: UK Household & Personal Products

475. Union Jack Oil plc

Company Profile: Union Jack Oil plc
Market Cap (USD): $4.4 M
Stock: UJO wb_incandescent
Country: United Kingdom
Sector: UK Energy
Industry: UK Oil & Gas E&P

476. Coro Energy plc

Company Profile: Coro Energy plc
Market Cap (USD): $4.4 M
Stock: CORO wb_incandescent
Country: United Kingdom
Sector: UK Energy
Industry: UK Oil & Gas E&P

477. Ascent Resources plc

Company Profile: Ascent Resources plc
Market Cap (USD): $4.4 M
Stock: AST wb_incandescent
Country: United Kingdom
Sector: UK Energy
Industry: UK Oil & Gas E&P

478. Getech Group plc

Company Profile: Getech Group plc
Market Cap (USD): $4.2 M
Stock: GTC wb_incandescent
Country: United Kingdom
Sector: UK Energy
Industry: UK Oil & Gas Equipment & Services

479. TomCo Energy plc

Company Profile: TomCo Energy plc
Market Cap (USD): $4.2 M
Stock: TOM wb_incandescent
Country: United Kingdom
Sector: UK Energy
Industry: UK Oil & Gas Drilling

480. Botswana Diamonds plc

Company Profile: Botswana Diamonds plc
Market Cap (USD): $4.1 M
Stock: BOD wb_incandescent
Country: Ireland
Sector: Irish Basic Materials
Industry: Irish Other Precious Metals & Mining

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