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Top FTSE AIM All-Share Companies by Market Cap and Stocks in 2025

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 July 1, 2025

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Ranking Company Stock Market Cap (USD) Country Sector Industry
511 Nostra Terra Oil and Gas Company plc NTOG wb_incandescent $1.8 M United Kingdom UK Energy UK Oil & Gas E&P
512 Arkle Resources plc ARK wb_incandescent $1.7 M Ireland Irish Basic Materials Irish Other Industrial Metals & Mining
513 Harvest Minerals Limited HMI wb_incandescent $1.7 M Australia Australian Basic Materials Australian Agricultural Inputs
514 Physiomics plc PYC wb_incandescent $1.7 M United Kingdom UK Healthcare UK Biotechnology
515 RBG Holdings plc RBGP wb_incandescent $1.7 M

(Jan. 1, 2025)

 United Kingdom UK Industrials UK Specialty Business Services
516 Lansdowne Oil & Gas plc LOGP wb_incandescent $1.7 M Ireland Irish Energy Irish Oil & Gas E&P
517 Karelian Diamond Resources plc KDR wb_incandescent $1.6 M Ireland Irish Basic Materials Irish Other Precious Metals & Mining
518 Enteq Upstream plc NTQ wb_incandescent $1.6 M

(Jan. 1, 2025)

 United Kingdom UK Energy UK Oil & Gas Equipment & Services
519 Spectra Systems Corporation SPSY wb_incandescent $1.5 M United States US Technology US Software—Application
520 Trellus Health plc TRLS wb_incandescent $1.4 M United States US Healthcare US Health Information Services
521 Tasty plc TAST wb_incandescent $1.4 M United Kingdom UK Consumer Discretionary UK Restaurants
522 ADM Energy plc ADME wb_incandescent $1.3 M United Kingdom UK Energy UK Oil & Gas E&P
523 Katoro Gold plc KAT wb_incandescent $1.3 M United Kingdom UK Basic Materials UK Gold
524 i-nexus Global plc INX wb_incandescent $1.3 M

(Jan. 1, 2024)

 United Kingdom UK Technology UK Software—Application
525 Versarien plc VRS wb_incandescent $1.2 M United Kingdom UK Basic Materials UK Specialty Chemicals
526 QUIZ plc QUIZ wb_incandescent $1.1 M

(Jan. 1, 2025)

 United Kingdom UK Consumer Discretionary UK Apparel Retail
527 Empyrean Energy plc EME wb_incandescent $1.0 M Australia Australian Energy Australian Oil & Gas E&P
528 Sunrise Resources plc SRES wb_incandescent $1.0 M United Kingdom UK Basic Materials UK Other Industrial Metals & Mining
529 Westmount Energy Limited WTE wb_incandescent $990,177 United Kingdom UK Energy UK Oil & Gas E&P
530 Mobile Streams plc MOS wb_incandescent $841,403 United Kingdom UK Communication Services UK Electronic Gaming & Multimedia
531 SDX Energy plc SDX wb_incandescent $770,143

(Jan. 1, 2025)

 United Kingdom UK Energy UK Oil & Gas E&P
532 PipeHawk plc PIP wb_incandescent $686,418 United Kingdom UK Technology UK Scientific & Technical Instruments
533 Active Energy Group plc AEG wb_incandescent $667,566 United Kingdom UK Industrials UK Pollution & Treatment Controls
534 Webis Holdings plc WEB wb_incandescent $651,296

(Jan. 1, 2025)

 United Kingdom UK Consumer Discretionary UK Gambling
535 Vela Technologies plc VELA wb_incandescent $625,921 United Kingdom UK Financials UK Asset Management
536 Angus Energy plc ANGS wb_incandescent $164,538 United Kingdom UK Energy UK Oil & Gas E&P
537 Ethernity Networks Ltd. ENET wb_incandescent $108,512 Israel Israeli Technology Israeli Software—Application
538 Bushveld Minerals Limited BMN wb_incandescent $88,745

(Jan. 1, 2025)

 South Africa South African Basic Materials South African Other Industrial Metals & Mining
539 Coro Energy plc CORO wb_incandescent $57,818 United Kingdom UK Energy UK Oil & Gas E&P
540 Mirriad Advertising plc MIRI wb_incandescent $25,347 United Kingdom UK Communication Services UK Advertising Agencies

Top FTSE AIM All-Share Companies Ranking by Market Cap as of July 1, 2025

511. Nostra Terra Oil and Gas Company plc

Company Profile: Nostra Terra Oil and Gas Company plc
Market Cap (USD): $1.8 M
Stock: NTOG wb_incandescent
Country: United Kingdom
Sector: UK Energy
Industry: UK Oil & Gas E&P

512. Arkle Resources plc

Company Profile: Arkle Resources plc
Market Cap (USD): $1.7 M
Stock: ARK wb_incandescent
Country: Ireland
Sector: Irish Basic Materials
Industry: Irish Other Industrial Metals & Mining

513. Harvest Minerals Limited

Company Profile: Harvest Minerals Limited
Market Cap (USD): $1.7 M
Stock: HMI wb_incandescent
Country: Australia
Sector: Australian Basic Materials
Industry: Australian Agricultural Inputs

514. Physiomics plc

Company Profile: Physiomics plc
Market Cap (USD): $1.7 M
Stock: PYC wb_incandescent
Country: United Kingdom
Sector: UK Healthcare
Industry: UK Biotechnology

515. 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

516. 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

517. Karelian Diamond Resources plc

Company Profile: Karelian Diamond Resources plc
Market Cap (USD): $1.6 M
Stock: KDR wb_incandescent
Country: Ireland
Sector: Irish Basic Materials
Industry: Irish Other Precious Metals & Mining

518. 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

519. Spectra Systems Corporation

Company Profile: Spectra Systems Corporation
Market Cap (USD): $1.5 M
Stock: SPSY wb_incandescent
Country: United States
Sector: US Technology
Industry: US Software—Application

520. Trellus Health plc

Company Profile: Trellus Health plc
Market Cap (USD): $1.4 M
Stock: TRLS wb_incandescent
Country: United States
Sector: US Healthcare
Industry: US Health Information Services

521. Tasty plc

Company Profile: Tasty plc
Market Cap (USD): $1.4 M
Stock: TAST wb_incandescent
Country: United Kingdom
Sector: UK Consumer Discretionary
Industry: UK Restaurants

522. 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

523. Katoro Gold plc

Company Profile: Katoro Gold plc
Market Cap (USD): $1.3 M
Stock: KAT wb_incandescent
Country: United Kingdom
Sector: UK Basic Materials
Industry: UK Gold

524. 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

525. Versarien plc

Company Profile: Versarien plc
Market Cap (USD): $1.2 M
Stock: VRS wb_incandescent
Country: United Kingdom
Sector: UK Basic Materials
Industry: UK Specialty Chemicals

526. 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

527. Empyrean Energy plc

Company Profile: Empyrean Energy plc
Market Cap (USD): $1.0 M
Stock: EME wb_incandescent
Country: Australia
Sector: Australian Energy
Industry: Australian Oil & Gas E&P

528. Sunrise Resources plc

Company Profile: Sunrise Resources plc
Market Cap (USD): $1.0 M
Stock: SRES wb_incandescent
Country: United Kingdom
Sector: UK Basic Materials
Industry: UK Other Industrial Metals & Mining

529. Westmount Energy Limited

Company Profile: Westmount Energy Limited
Market Cap (USD): $990,177
Stock: WTE wb_incandescent
Country: United Kingdom
Sector: UK Energy
Industry: UK Oil & Gas E&P

530. Mobile Streams plc

Company Profile: Mobile Streams plc
Market Cap (USD): $841,403
Stock: MOS wb_incandescent
Country: United Kingdom
Sector: UK Communication Services
Industry: UK Electronic Gaming & Multimedia

531. 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

532. PipeHawk plc

Company Profile: PipeHawk plc
Market Cap (USD): $686,418
Stock: PIP wb_incandescent
Country: United Kingdom
Sector: UK Technology
Industry: UK Scientific & Technical Instruments

533. Active Energy Group plc

Company Profile: Active Energy Group plc
Market Cap (USD): $667,566
Stock: AEG wb_incandescent
Country: United Kingdom
Sector: UK Industrials
Industry: UK Pollution & Treatment Controls

534. 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

535. Vela Technologies plc

Company Profile: Vela Technologies plc
Market Cap (USD): $625,921
Stock: VELA wb_incandescent
Country: United Kingdom
Sector: UK Financials
Industry: UK Asset Management

536. Angus Energy plc

Company Profile: Angus Energy plc
Market Cap (USD): $164,538
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): $108,512
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. Coro Energy plc

Company Profile: Coro Energy plc
Market Cap (USD): $57,818
Stock: CORO wb_incandescent
Country: United Kingdom
Sector: UK Energy
Industry: UK Oil & Gas E&P

540. Mirriad Advertising plc

Company Profile: Mirriad Advertising plc
Market Cap (USD): $25,347
Stock: MIRI wb_incandescent
Country: United Kingdom
Sector: UK Communication Services
Industry: UK Advertising Agencies

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