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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
511 RBG Holdings plc RBGP $1.7 M

(Jan. 1, 2025)

 United Kingdom UK Industrials UK Specialty Business Services
512 Lansdowne Oil & Gas plc LOGP $1.7 M Ireland Irish Energy Irish Oil & Gas E&P
513 Enteq Upstream plc NTQ $1.6 M

(Jan. 1, 2025)

 United Kingdom UK Energy UK Oil & Gas Equipment & Services
514 Harvest Minerals Limited HMI $1.5 M Australia Australian Basic Materials Australian Agricultural Inputs
515 Karelian Diamond Resources plc KDR $1.5 M Ireland Irish Basic Materials Irish Other Precious Metals & Mining
516 PHSC plc PHSC $1.5 M United Kingdom UK Industrials UK Conglomerates
517 Mercantile Ports & Logistics Limited MPL $1.4 M United Kingdom UK Industrials UK Marine Shipping
518 CloudCoCo Group plc CLCO $1.4 M United Kingdom UK Technology UK Software—Infrastructure
519 Spectra Systems Corporation SPSY $1.3 M United States US Technology US Software—Application
520 i-nexus Global plc INX $1.3 M

(Jan. 1, 2024)

 United Kingdom UK Technology UK Software—Application
521 ADM Energy plc ADME $1.3 M United Kingdom UK Energy UK Oil & Gas E&P
522 Mirriad Advertising plc MIRI $1.3 M United Kingdom UK Communication Services UK Advertising Agencies
523 Evgen Pharma plc EVG $1.2 M United Kingdom UK Healthcare UK Biotechnology
524 Physiomics plc PYC $1.2 M United Kingdom UK Healthcare UK Biotechnology
525 QUIZ plc QUIZ $1.1 M

(Jan. 1, 2025)

 United Kingdom UK Consumer Discretionary UK Apparel Retail
526 Vela Technologies plc VELA $957,548 United Kingdom UK Financials UK Asset Management
527 PipeHawk plc PIP $952,976 United Kingdom UK Technology UK Scientific & Technical Instruments
528 Trellus Health plc TRLS $869,445 United States US Healthcare US Health Information Services
529 SDX Energy plc SDX $770,143

(Jan. 1, 2025)

 United Kingdom UK Energy UK Oil & Gas E&P
530 Nostra Terra Oil and Gas Company plc NTOG $748,207 United Kingdom UK Energy UK Oil & Gas E&P
531 Webis Holdings plc WEB $651,296

(Jan. 1, 2025)

 United Kingdom UK Consumer Discretionary UK Gambling
532 EQTEC plc EQT $641,949 Ireland Irish Utilities Irish Utilities—Diversified
533 Katoro Gold plc KAT $351,399 United Kingdom UK Basic Materials UK Gold
534 Maintel Holdings plc MAI $260,928 United Kingdom UK Technology UK Communication Equipment
535 Landore Resources Limited LND $179,952 United Kingdom UK Basic Materials UK Other Industrial Metals & Mining
536 Angus Energy plc ANGS $161,074 United Kingdom UK Energy UK Oil & Gas E&P
537 Ethernity Networks Ltd. ENET $94,206 Israel Israeli Technology Israeli Software—Application
538 Bushveld Minerals Limited BMN $88,745

(Jan. 1, 2025)

 South Africa South African Basic Materials South African Other Industrial Metals & Mining
539 Vast Resources plc VAST $80,708 United Kingdom UK Basic Materials UK Other Industrial Metals & Mining
540 Tissue Regenix Group plc TRX $69,505 United Kingdom UK Healthcare UK Biotechnology

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

511. RBG Holdings plc

Company Profile: RBG Holdings plc
Market Cap (USD): $1.7 M (Jan. 1, 2025)
Stock: RBGP wb_incandescent
Country: United Kingdom
Sector: UK Industrials
Industry: UK Specialty Business Services

512. Lansdowne Oil & Gas plc

Company Profile: Lansdowne Oil & Gas plc
Market Cap (USD): $1.7 M
Stock: LOGP wb_incandescent
Country: Ireland
Sector: Irish Energy
Industry: Irish Oil & Gas E&P

513. Enteq Upstream plc

Company Profile: Enteq Upstream plc
Market Cap (USD): $1.6 M (Jan. 1, 2025)
Stock: NTQ wb_incandescent
Country: United Kingdom
Sector: UK Energy
Industry: UK Oil & Gas Equipment & Services

514. Harvest Minerals Limited

Company Profile: Harvest Minerals Limited
Market Cap (USD): $1.5 M
Stock: HMI wb_incandescent
Country: Australia
Sector: Australian Basic Materials
Industry: Australian Agricultural Inputs

515. Karelian Diamond Resources plc

Company Profile: Karelian Diamond Resources plc
Market Cap (USD): $1.5 M
Stock: KDR wb_incandescent
Country: Ireland
Sector: Irish Basic Materials
Industry: Irish Other Precious Metals & Mining

516. PHSC plc

Company Profile: PHSC plc
Market Cap (USD): $1.5 M
Stock: PHSC wb_incandescent
Country: United Kingdom
Sector: UK Industrials
Industry: UK Conglomerates

517. Mercantile Ports & Logistics Limited

Company Profile: Mercantile Ports & Logistics Limited
Market Cap (USD): $1.4 M
Stock: MPL wb_incandescent
Country: United Kingdom
Sector: UK Industrials
Industry: UK Marine Shipping

518. CloudCoCo Group plc

Company Profile: CloudCoCo Group plc
Market Cap (USD): $1.4 M
Stock: CLCO wb_incandescent
Country: United Kingdom
Sector: UK Technology
Industry: UK Software—Infrastructure

519. Spectra Systems Corporation

Company Profile: Spectra Systems Corporation
Market Cap (USD): $1.3 M
Stock: SPSY wb_incandescent
Country: United States
Sector: US Technology
Industry: US Software—Application

520. i-nexus Global plc

Company Profile: i-nexus Global plc
Market Cap (USD): $1.3 M (Jan. 1, 2024)
Stock: INX wb_incandescent
Country: United Kingdom
Sector: UK Technology
Industry: UK Software—Application

521. ADM Energy plc

Company Profile: ADM Energy plc
Market Cap (USD): $1.3 M
Stock: ADME wb_incandescent
Country: United Kingdom
Sector: UK Energy
Industry: UK Oil & Gas E&P

522. Mirriad Advertising plc

Company Profile: Mirriad Advertising plc
Market Cap (USD): $1.3 M
Stock: MIRI wb_incandescent
Country: United Kingdom
Sector: UK Communication Services
Industry: UK Advertising Agencies

523. Evgen Pharma plc

Company Profile: Evgen Pharma plc
Market Cap (USD): $1.2 M
Stock: EVG wb_incandescent
Country: United Kingdom
Sector: UK Healthcare
Industry: UK Biotechnology

524. Physiomics plc

Company Profile: Physiomics plc
Market Cap (USD): $1.2 M
Stock: PYC wb_incandescent
Country: United Kingdom
Sector: UK Healthcare
Industry: UK Biotechnology

525. QUIZ plc

Company Profile: QUIZ plc
Market Cap (USD): $1.1 M (Jan. 1, 2025)
Stock: QUIZ wb_incandescent
Country: United Kingdom
Sector: UK Consumer Discretionary
Industry: UK Apparel Retail

526. Vela Technologies plc

Company Profile: Vela Technologies plc
Market Cap (USD): $957,548
Stock: VELA wb_incandescent
Country: United Kingdom
Sector: UK Financials
Industry: UK Asset Management

527. PipeHawk plc

Company Profile: PipeHawk plc
Market Cap (USD): $952,976
Stock: PIP wb_incandescent
Country: United Kingdom
Sector: UK Technology
Industry: UK Scientific & Technical Instruments

528. Trellus Health plc

Company Profile: Trellus Health plc
Market Cap (USD): $869,445
Stock: TRLS wb_incandescent
Country: United States
Sector: US Healthcare
Industry: US Health Information Services

529. SDX Energy plc

Company Profile: SDX Energy plc
Market Cap (USD): $770,143 (Jan. 1, 2025)
Stock: SDX wb_incandescent
Country: United Kingdom
Sector: UK Energy
Industry: UK Oil & Gas E&P

530. Nostra Terra Oil and Gas Company plc

Company Profile: Nostra Terra Oil and Gas Company plc
Market Cap (USD): $748,207
Stock: NTOG wb_incandescent
Country: United Kingdom
Sector: UK Energy
Industry: UK Oil & Gas E&P

531. Webis Holdings plc

Company Profile: Webis Holdings plc
Market Cap (USD): $651,296 (Jan. 1, 2025)
Stock: WEB wb_incandescent
Country: United Kingdom
Sector: UK Consumer Discretionary
Industry: UK Gambling

532. EQTEC plc

Company Profile: EQTEC plc
Market Cap (USD): $641,949
Stock: EQT wb_incandescent
Country: Ireland
Sector: Irish Utilities
Industry: Irish Utilities—Diversified

533. Katoro Gold plc

Company Profile: Katoro Gold plc
Market Cap (USD): $351,399
Stock: KAT wb_incandescent
Country: United Kingdom
Sector: UK Basic Materials
Industry: UK Gold

534. Maintel Holdings plc

Company Profile: Maintel Holdings plc
Market Cap (USD): $260,928
Stock: MAI wb_incandescent
Country: United Kingdom
Sector: UK Technology
Industry: UK Communication Equipment

535. Landore Resources Limited

Company Profile: Landore Resources Limited
Market Cap (USD): $179,952
Stock: LND wb_incandescent
Country: United Kingdom
Sector: UK Basic Materials
Industry: UK Other Industrial Metals & Mining

536. Angus Energy plc

Company Profile: Angus Energy plc
Market Cap (USD): $161,074
Stock: ANGS wb_incandescent
Country: United Kingdom
Sector: UK Energy
Industry: UK Oil & Gas E&P

537. Ethernity Networks Ltd.

Company Profile: Ethernity Networks Ltd.
Market Cap (USD): $94,206
Stock: ENET wb_incandescent
Country: Israel
Sector: Israeli Technology
Industry: Israeli Software—Application

538. Bushveld Minerals Limited

Company Profile: Bushveld Minerals Limited
Market Cap (USD): $88,745 (Jan. 1, 2025)
Stock: BMN wb_incandescent
Country: South Africa
Sector: South African Basic Materials
Industry: South African Other Industrial Metals & Mining

539. Vast Resources plc

Company Profile: Vast Resources plc
Market Cap (USD): $80,708
Stock: VAST wb_incandescent
Country: United Kingdom
Sector: UK Basic Materials
Industry: UK Other Industrial Metals & Mining

540. Tissue Regenix Group plc

Company Profile: Tissue Regenix Group plc
Market Cap (USD): $69,505
Stock: TRX wb_incandescent
Country: United Kingdom
Sector: UK Healthcare
Industry: UK Biotechnology

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