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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.

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

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Ranking Company Stock Market Cap (USD) Country Sector Industry
301 Itaconix plc ITX wb_incandescent $28.1 M United States US Basic Materials US Specialty Chemicals
302 Jarvis Securities plc JIM wb_incandescent $27.4 M United Kingdom UK Financials UK Capital Markets
303 Tekcapital plc TEK wb_incandescent $27.1 M United Kingdom UK Technology UK Software—Application
304 OPG Power Ventures plc OPG wb_incandescent $26.5 M India Indian Utilities Indian Utilities—Regulated Electric
305 Baron Oil plc BOIL wb_incandescent $26.4 M United Kingdom UK Energy UK Oil & Gas E&P
306 Arc Minerals Limited ARCM wb_incandescent $25.9 M Virgin Islands (British) Virgin Islands (British) Basic Materials Virgin Islands (British) Other Industrial Metals & Mining
307 Smartspace Software plc SMRT wb_incandescent $25.8 M

(Jan. 1, 2024)

 United Kingdom UK Technology UK Software—Application
308 James Cropper plc CRPR wb_incandescent $25.8 M United Kingdom UK Basic Materials UK Paper & Paper Products
309 Mothercare plc MTC wb_incandescent $25.7 M United Kingdom UK Consumer Discretionary UK Specialty Retail
310 Checkit plc CKT wb_incandescent $25.6 M United Kingdom UK Technology UK Software—Application
311 Petro Matad Limited MATD wb_incandescent $25.5 M United Kingdom UK Energy UK Oil & Gas E&P
312 Chariot Ltd. CHAR wb_incandescent $25.5 M United Kingdom UK Energy UK Oil & Gas E&P
313 Frontier IP Group plc FIPP wb_incandescent $25.5 M United Kingdom UK Financials UK Asset Management
314 Blackbird plc BIRD wb_incandescent $25.2 M United Kingdom UK Technology UK Software—Application
315 First Property Group plc FPO wb_incandescent $25.0 M United Kingdom UK Real Estate UK Real Estate Services
316 Eden Research plc EDEN wb_incandescent $24.9 M United Kingdom UK Basic Materials UK Agricultural Inputs
317 REACT Group plc REAT wb_incandescent $24.4 M United Kingdom UK Industrials UK Specialty Business Services
318 Trinity Exploration & Production plc TRIN wb_incandescent $24.1 M

(July 1, 2024)

 United Kingdom UK Energy UK Oil & Gas E&P
319 Tavistock Investments plc TAVI wb_incandescent $24.0 M United Kingdom UK Financials UK Capital Markets
320 The Parkmead Group plc PMG wb_incandescent $23.7 M United Kingdom UK Energy UK Oil & Gas E&P
321 Orosur Mining Inc. OMI wb_incandescent $23.6 M Canada Canadian Basic Materials Canadian Gold
322 Bigblu Broadband plc BBB wb_incandescent $23.2 M United Kingdom UK Communication Services UK Telecom Services
323 FireAngel Safety Technology Group plc FA. wb_incandescent $23.1 M

(Jan. 1, 2024)

 United Kingdom UK Industrials UK Security & Protection Services
324 Virgin Wines UK PLC VINO wb_incandescent $22.4 M United Kingdom UK Consumer Staples UK Beverages—Wineries & Distilleries
325 Cambridge Cognition Holdings plc COG wb_incandescent $22.1 M United Kingdom UK Healthcare UK Health Information Services
326 Robinson plc RBN wb_incandescent $22.1 M United Kingdom UK Consumer Discretionary UK Packaging & Containers
327 Insig AI Plc INSG wb_incandescent $21.9 M United Kingdom UK Technology UK Software—Infrastructure
328 Altitude Group plc ALT wb_incandescent $21.8 M United Kingdom UK Technology UK Software—Application
329 OptiBiotix Health plc OPTI wb_incandescent $21.8 M United Kingdom UK Healthcare UK Biotechnology
330 Sound Energy plc SOU wb_incandescent $21.4 M United Kingdom UK Energy UK Oil & Gas E&P

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

301. Itaconix plc

Company Profile: Itaconix plc
Market Cap (USD): $28.1 M
Stock: ITX wb_incandescent
Country: United States
Sector: US Basic Materials
Industry: US Specialty Chemicals

302. Jarvis Securities plc

Company Profile: Jarvis Securities plc
Market Cap (USD): $27.4 M
Stock: JIM wb_incandescent
Country: United Kingdom
Sector: UK Financials
Industry: UK Capital Markets

303. Tekcapital plc

Company Profile: Tekcapital plc
Market Cap (USD): $27.1 M
Stock: TEK wb_incandescent
Country: United Kingdom
Sector: UK Technology
Industry: UK Software—Application

304. OPG Power Ventures plc

Company Profile: OPG Power Ventures plc
Market Cap (USD): $26.5 M
Stock: OPG wb_incandescent
Country: India
Sector: Indian Utilities
Industry: Indian Utilities—Regulated Electric

305. Baron Oil plc

Company Profile: Baron Oil plc
Market Cap (USD): $26.4 M
Stock: BOIL wb_incandescent
Country: United Kingdom
Sector: UK Energy
Industry: UK Oil & Gas E&P

306. Arc Minerals Limited

Company Profile: Arc Minerals Limited
Market Cap (USD): $25.9 M
Stock: ARCM wb_incandescent
Country: Virgin Islands (British)
Sector: Virgin Islands (British) Basic Materials
Industry: Virgin Islands (British) Other Industrial Metals & Mining

307. Smartspace Software plc

Company Profile: Smartspace Software plc
Market Cap (USD): $25.8 M (Jan. 1, 2024)
Stock: SMRT wb_incandescent
Country: United Kingdom
Sector: UK Technology
Industry: UK Software—Application

308. James Cropper plc

Company Profile: James Cropper plc
Market Cap (USD): $25.8 M
Stock: CRPR wb_incandescent
Country: United Kingdom
Sector: UK Basic Materials
Industry: UK Paper & Paper Products

309. Mothercare plc

Company Profile: Mothercare plc
Market Cap (USD): $25.7 M
Stock: MTC wb_incandescent
Country: United Kingdom
Sector: UK Consumer Discretionary
Industry: UK Specialty Retail

310. Checkit plc

Company Profile: Checkit plc
Market Cap (USD): $25.6 M
Stock: CKT wb_incandescent
Country: United Kingdom
Sector: UK Technology
Industry: UK Software—Application

311. Petro Matad Limited

Company Profile: Petro Matad Limited
Market Cap (USD): $25.5 M
Stock: MATD wb_incandescent
Country: United Kingdom
Sector: UK Energy
Industry: UK Oil & Gas E&P

312. Chariot Ltd.

Company Profile: Chariot Ltd.
Market Cap (USD): $25.5 M
Stock: CHAR wb_incandescent
Country: United Kingdom
Sector: UK Energy
Industry: UK Oil & Gas E&P

313. Frontier IP Group plc

Company Profile: Frontier IP Group plc
Market Cap (USD): $25.5 M
Stock: FIPP wb_incandescent
Country: United Kingdom
Sector: UK Financials
Industry: UK Asset Management

314. Blackbird plc

Company Profile: Blackbird plc
Market Cap (USD): $25.2 M
Stock: BIRD wb_incandescent
Country: United Kingdom
Sector: UK Technology
Industry: UK Software—Application

315. First Property Group plc

Company Profile: First Property Group plc
Market Cap (USD): $25.0 M
Stock: FPO wb_incandescent
Country: United Kingdom
Sector: UK Real Estate
Industry: UK Real Estate Services

316. Eden Research plc

Company Profile: Eden Research plc
Market Cap (USD): $24.9 M
Stock: EDEN wb_incandescent
Country: United Kingdom
Sector: UK Basic Materials
Industry: UK Agricultural Inputs

317. REACT Group plc

Company Profile: REACT Group plc
Market Cap (USD): $24.4 M
Stock: REAT wb_incandescent
Country: United Kingdom
Sector: UK Industrials
Industry: UK Specialty Business Services

318. Trinity Exploration & Production plc

Company Profile: Trinity Exploration & Production plc
Market Cap (USD): $24.1 M (July 1, 2024)
Stock: TRIN wb_incandescent
Country: United Kingdom
Sector: UK Energy
Industry: UK Oil & Gas E&P

319. Tavistock Investments plc

Company Profile: Tavistock Investments plc
Market Cap (USD): $24.0 M
Stock: TAVI wb_incandescent
Country: United Kingdom
Sector: UK Financials
Industry: UK Capital Markets

320. The Parkmead Group plc

Company Profile: The Parkmead Group plc
Market Cap (USD): $23.7 M
Stock: PMG wb_incandescent
Country: United Kingdom
Sector: UK Energy
Industry: UK Oil & Gas E&P

321. Orosur Mining Inc.

Company Profile: Orosur Mining Inc.
Market Cap (USD): $23.6 M
Stock: OMI wb_incandescent
Country: Canada
Sector: Canadian Basic Materials
Industry: Canadian Gold

322. Bigblu Broadband plc

Company Profile: Bigblu Broadband plc
Market Cap (USD): $23.2 M
Stock: BBB wb_incandescent
Country: United Kingdom
Sector: UK Communication Services
Industry: UK Telecom Services

323. 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

324. Virgin Wines UK PLC

Company Profile: Virgin Wines UK PLC
Market Cap (USD): $22.4 M
Stock: VINO wb_incandescent
Country: United Kingdom
Sector: UK Consumer Staples
Industry: UK Beverages—Wineries & Distilleries

325. Cambridge Cognition Holdings plc

Company Profile: Cambridge Cognition Holdings plc
Market Cap (USD): $22.1 M
Stock: COG wb_incandescent
Country: United Kingdom
Sector: UK Healthcare
Industry: UK Health Information Services

326. Robinson plc

Company Profile: Robinson plc
Market Cap (USD): $22.1 M
Stock: RBN wb_incandescent
Country: United Kingdom
Sector: UK Consumer Discretionary
Industry: UK Packaging & Containers

327. Insig AI Plc

Company Profile: Insig AI Plc
Market Cap (USD): $21.9 M
Stock: INSG wb_incandescent
Country: United Kingdom
Sector: UK Technology
Industry: UK Software—Infrastructure

328. Altitude Group plc

Company Profile: Altitude Group plc
Market Cap (USD): $21.8 M
Stock: ALT wb_incandescent
Country: United Kingdom
Sector: UK Technology
Industry: UK Software—Application

329. OptiBiotix Health plc

Company Profile: OptiBiotix Health plc
Market Cap (USD): $21.8 M
Stock: OPTI wb_incandescent
Country: United Kingdom
Sector: UK Healthcare
Industry: UK Biotechnology

330. Sound Energy plc

Company Profile: Sound Energy plc
Market Cap (USD): $21.4 M
Stock: SOU wb_incandescent
Country: United Kingdom
Sector: UK Energy
Industry: UK Oil & Gas E&P

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