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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
271 STM Group plc STM $43.5 M

(Jan. 1, 2024)

 United Kingdom UK Financials UK Asset Management
272 Virgin Wines UK PLC VINO $43.2 M United Kingdom UK Consumer Staples UK Beverages—Wineries & Distilleries
273 Arecor Therapeutics plc AREC $43.2 M United Kingdom UK Healthcare UK Biotechnology
274 Christie Group plc CTG $43.1 M United Kingdom UK Industrials UK Specialty Business Services
275 Sanderson Design Group plc SDG $42.8 M United Kingdom UK Consumer Discretionary UK Furnishings, Fixtures & Appliances
276 MC Mining Limited MCM $41.7 M

(Jan. 1, 2024)

 Australia Australian Energy Australian Thermal Coal
277 OPG Power Ventures plc OPG $41.6 M

(July 1, 2025)

 India Indian Utilities Indian Utilities—Regulated Electric
278 Wishbone Gold plc WSBN $39.9 M Gibraltar Gibraltar Basic Materials Gibraltar Gold
279 Zinnwald Lithium plc ZNWD $39.6 M United Kingdom UK Basic Materials UK Other Industrial Metals & Mining
280 88 Energy Limited 88E $38.5 M

(July 1, 2024)

 Australia Australian Energy Australian Oil & Gas E&P
281 Plant Health Care plc PHC $38.1 M

(July 1, 2024)

 United States US Basic Materials US Agricultural Inputs
282 First Property Group plc FPO $37.3 M United Kingdom UK Real Estate UK Real Estate Services
283 tinyBuild, Inc. TBLD $37.1 M United States US Communication Services US Electronic Gaming & Multimedia
284 Insig AI Plc INSG $37.0 M United Kingdom UK Technology UK Software—Infrastructure
285 Emmerson plc EML $35.4 M United Kingdom UK Basic Materials UK Agricultural Inputs
286 Renalytix AI plc RENX $34.7 M United Kingdom UK Healthcare UK Diagnostics & Research
287 Hornby plc HRN $34.6 M

(Jan. 1, 2024)

 United Kingdom UK Consumer Discretionary UK Specialty Retail
288 Novacyt SA NCYT $34.2 M United Kingdom UK Healthcare UK Diagnostics & Research
289 XLMedia plc XLM $34.2 M

(Jan. 1, 2025)

 Cyprus Cyprus Communication Services Cyprus Publishing
290 CyanConnode Holdings plc CYAN $33.6 M United Kingdom UK Technology UK Communication Equipment
291 M Winkworth plc WINK $33.1 M United Kingdom UK Real Estate UK Real Estate Services
292 Pebble Beach Systems Group plc PEB $32.7 M United Kingdom UK Technology UK Communication Equipment
293 Chariot Ltd. CHAR $32.4 M United Kingdom UK Energy UK Oil & Gas E&P
294 The Artisanal Spirits Company plc ART $31.9 M United Kingdom UK Consumer Staples UK Beverages—Wineries & Distilleries
295 Sareum Holdings plc SAR $31.6 M United Kingdom UK Healthcare UK Biotechnology
296 Tekcapital plc TEK $31.3 M United Kingdom UK Technology UK Software—Application
297 SIMEC Atlantis Energy Limited SAE $30.9 M United Kingdom UK Utilities UK Utilities—Independent Power Producers
298 Tlou Energy Limited TLOU $30.5 M

(July 1, 2024)

 Australia Australian Energy Australian Oil & Gas E&P
299 Checkit plc CKT $30.5 M United Kingdom UK Technology UK Software—Application
300 Capital Metals plc CMET $30.1 M United Kingdom UK Basic Materials UK Other Industrial Metals & Mining

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

271. STM Group plc

Company Profile: STM Group plc
Market Cap (USD): $43.5 M (Jan. 1, 2024)
Stock: STM wb_incandescent
Country: United Kingdom
Sector: UK Financials
Industry: UK Asset Management

272. Virgin Wines UK PLC

Company Profile: Virgin Wines UK PLC
Market Cap (USD): $43.2 M
Stock: VINO wb_incandescent
Country: United Kingdom
Sector: UK Consumer Staples
Industry: UK Beverages—Wineries & Distilleries

273. Arecor Therapeutics plc

Company Profile: Arecor Therapeutics plc
Market Cap (USD): $43.2 M
Stock: AREC wb_incandescent
Country: United Kingdom
Sector: UK Healthcare
Industry: UK Biotechnology

274. Christie Group plc

Company Profile: Christie Group plc
Market Cap (USD): $43.1 M
Stock: CTG wb_incandescent
Country: United Kingdom
Sector: UK Industrials
Industry: UK Specialty Business Services

275. Sanderson Design Group plc

Company Profile: Sanderson Design Group plc
Market Cap (USD): $42.8 M
Stock: SDG wb_incandescent
Country: United Kingdom
Sector: UK Consumer Discretionary
Industry: UK Furnishings, Fixtures & Appliances

276. MC Mining Limited

Company Profile: MC Mining Limited
Market Cap (USD): $41.7 M (Jan. 1, 2024)
Stock: MCM wb_incandescent
Country: Australia
Sector: Australian Energy
Industry: Australian Thermal Coal

277. OPG Power Ventures plc

Company Profile: OPG Power Ventures plc
Market Cap (USD): $41.6 M (July 1, 2025)
Stock: OPG wb_incandescent
Country: India
Sector: Indian Utilities
Industry: Indian Utilities—Regulated Electric

278. Wishbone Gold plc

Company Profile: Wishbone Gold plc
Market Cap (USD): $39.9 M
Stock: WSBN wb_incandescent
Country: Gibraltar
Sector: Gibraltar Basic Materials
Industry: Gibraltar Gold

279. Zinnwald Lithium plc

Company Profile: Zinnwald Lithium plc
Market Cap (USD): $39.6 M
Stock: ZNWD wb_incandescent
Country: United Kingdom
Sector: UK Basic Materials
Industry: UK Other Industrial Metals & Mining

280. 88 Energy Limited

Company Profile: 88 Energy Limited
Market Cap (USD): $38.5 M (July 1, 2024)
Stock: 88E wb_incandescent
Country: Australia
Sector: Australian Energy
Industry: Australian Oil & Gas E&P

281. Plant Health Care plc

Company Profile: Plant Health Care plc
Market Cap (USD): $38.1 M (July 1, 2024)
Stock: PHC wb_incandescent
Country: United States
Sector: US Basic Materials
Industry: US Agricultural Inputs

282. First Property Group plc

Company Profile: First Property Group plc
Market Cap (USD): $37.3 M
Stock: FPO wb_incandescent
Country: United Kingdom
Sector: UK Real Estate
Industry: UK Real Estate Services

283. tinyBuild, Inc.

Company Profile: tinyBuild, Inc.
Market Cap (USD): $37.1 M
Stock: TBLD wb_incandescent
Country: United States
Sector: US Communication Services
Industry: US Electronic Gaming & Multimedia

284. Insig AI Plc

Company Profile: Insig AI Plc
Market Cap (USD): $37.0 M
Stock: INSG wb_incandescent
Country: United Kingdom
Sector: UK Technology
Industry: UK Software—Infrastructure

285. Emmerson plc

Company Profile: Emmerson plc
Market Cap (USD): $35.4 M
Stock: EML wb_incandescent
Country: United Kingdom
Sector: UK Basic Materials
Industry: UK Agricultural Inputs

286. Renalytix AI plc

Company Profile: Renalytix AI plc
Market Cap (USD): $34.7 M
Stock: RENX wb_incandescent
Country: United Kingdom
Sector: UK Healthcare
Industry: UK Diagnostics & Research

287. Hornby plc

Company Profile: Hornby plc
Market Cap (USD): $34.6 M (Jan. 1, 2024)
Stock: HRN wb_incandescent
Country: United Kingdom
Sector: UK Consumer Discretionary
Industry: UK Specialty Retail

288. Novacyt SA

Company Profile: Novacyt SA
Market Cap (USD): $34.2 M
Stock: NCYT wb_incandescent
Country: United Kingdom
Sector: UK Healthcare
Industry: UK Diagnostics & Research

289. XLMedia plc

Company Profile: XLMedia plc
Market Cap (USD): $34.2 M (Jan. 1, 2025)
Stock: XLM wb_incandescent
Country: Cyprus
Sector: Cyprus Communication Services
Industry: Cyprus Publishing

290. CyanConnode Holdings plc

Company Profile: CyanConnode Holdings plc
Market Cap (USD): $33.6 M
Stock: CYAN wb_incandescent
Country: United Kingdom
Sector: UK Technology
Industry: UK Communication Equipment

291. M Winkworth plc

Company Profile: M Winkworth plc
Market Cap (USD): $33.1 M
Stock: WINK wb_incandescent
Country: United Kingdom
Sector: UK Real Estate
Industry: UK Real Estate Services

292. Pebble Beach Systems Group plc

Company Profile: Pebble Beach Systems Group plc
Market Cap (USD): $32.7 M
Stock: PEB wb_incandescent
Country: United Kingdom
Sector: UK Technology
Industry: UK Communication Equipment

293. Chariot Ltd.

Company Profile: Chariot Ltd.
Market Cap (USD): $32.4 M
Stock: CHAR wb_incandescent
Country: United Kingdom
Sector: UK Energy
Industry: UK Oil & Gas E&P

294. The Artisanal Spirits Company plc

Company Profile: The Artisanal Spirits Company plc
Market Cap (USD): $31.9 M
Stock: ART wb_incandescent
Country: United Kingdom
Sector: UK Consumer Staples
Industry: UK Beverages—Wineries & Distilleries

295. Sareum Holdings plc

Company Profile: Sareum Holdings plc
Market Cap (USD): $31.6 M
Stock: SAR wb_incandescent
Country: United Kingdom
Sector: UK Healthcare
Industry: UK Biotechnology

296. Tekcapital plc

Company Profile: Tekcapital plc
Market Cap (USD): $31.3 M
Stock: TEK wb_incandescent
Country: United Kingdom
Sector: UK Technology
Industry: UK Software—Application

297. SIMEC Atlantis Energy Limited

Company Profile: SIMEC Atlantis Energy Limited
Market Cap (USD): $30.9 M
Stock: SAE wb_incandescent
Country: United Kingdom
Sector: UK Utilities
Industry: UK Utilities—Independent Power Producers

298. Tlou Energy Limited

Company Profile: Tlou Energy Limited
Market Cap (USD): $30.5 M (July 1, 2024)
Stock: TLOU wb_incandescent
Country: Australia
Sector: Australian Energy
Industry: Australian Oil & Gas E&P

299. Checkit plc

Company Profile: Checkit plc
Market Cap (USD): $30.5 M
Stock: CKT wb_incandescent
Country: United Kingdom
Sector: UK Technology
Industry: UK Software—Application

300. Capital Metals plc

Company Profile: Capital Metals plc
Market Cap (USD): $30.1 M
Stock: CMET wb_incandescent
Country: United Kingdom
Sector: UK Basic Materials
Industry: UK Other Industrial Metals & Mining

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