| | AIB Group Plc | Banks - Regional | Financial Services | -0.94 | 2.55 | 0.72 | 31.77 | 24.85 | 32.06 | 159.70 | 126.36 |
| | AIQ Ltd | Software - Application | Technology | 0.00 | 0.00 | -8.19 | -28.45 | -18.63 | -17.00 | -67.48 | -48.57 |
| | Airea Plc | Textile Manufacturing | Consumer Cyclical | -2.48 | -3.12 | -1.44 | 8.80 | 37.07 | -10.45 | 12.30 | -7.37 |
| | Airtel Africa Plc | Telecom Services | Communication Services | 1.06 | 3.83 | 8.37 | 7.04 | -1.97 | -1.52 | -18.79 | 53.98 |
| | AJ Bell Plc | Asset Management | Financial Services | -0.30 | 7.87 | 13.32 | 7.76 | 25.19 | 8.25 | 41.41 | -19.89 |
| | Ajax Resources Plc | Shell Companies | Financial Services | 0.00 | 0.00 | -15.00 | -42.05 | -48.48 | -68.13 | -49.00 | -46.29 |
| | Alba Mineral Resources Plc | Other Industrial Metals & Mining | Basic Materials | -1.52 | -7.14 | -4.13 | -24.07 | -34.01 | -38.04 | -63.89 | -79.20 |
| | Albion Development VCT Plc | Asset Management | Financial Services | 3.59 | 3.87 | 3.87 | 6.99 | 6.99 | 2.73 | 2.73 | 21.41 |
| | Albion Enterprise VCT Plc | Asset Management | Financial Services | 0.00 | 0.00 | -3.60 | -0.78 | -4.17 | -2.83 | -2.17 | 13.90 |
| | Albion Technology & General VCT Plc | Asset Management | Financial Services | 0.00 | 1.59 | 1.59 | 3.11 | -4.85 | -1.56 | -4.43 | 9.32 |
| | Albion Venture Capital Trust Plc | Asset Management | Financial Services | 0.00 | 0.00 | -1.17 | -3.06 | -3.06 | -6.91 | -8.86 | -35.25 |
| | Alfa Financial Software Holdings Plc | Software - Application | Technology | 0.00 | -1.94 | 1.53 | 0.58 | 15.05 | 24.27 | -2.35 | 33.09 |
| | Alien Metals Ltd | Other Precious Metals & Mining | Basic Materials | 0.61 | -3.59 | 31.20 | -9.89 | -15.90 | -66.19 | -77.44 | -86.33 |
| | Alina Holdings Plc | REIT - Retail | Real Estate | 0.00 | 0.00 | 0.00 | 2.82 | -4.26 | -36.66 | -57.06 | -67.56 |
| | Alkemy Capital Investments Plc | Shell Companies | Financial Services | 0.57 | -5.62 | 14.96 | 1.03 | -22.12 | -60.89 | -43.28 | -56.00 |
| | Allergy Therapeutics Plc | Drug Manufacturers - Specialty & Generic | Healthcare | 0.00 | 6.67 | 3.10 | 23.10 | 106.21 | 186.40 | -87.35 | -85.93 |
| | Alliance Pharma Plc | Drug Manufacturers - Specialty & Generic | Healthcare | -1.78 | -5.29 | -12.43 | -15.13 | -13.24 | -49.49 | -70.68 | -64.60 |
| | Alliance Trust Plc | Asset Management | Financial Services | 0.98 | 0.16 | 0.32 | 7.11 | 20.25 | 27.44 | 30.59 | 30.05 |
| | Allianz Technology Trust Plc | Asset Management | Financial Services | 2.17 | 1.58 | 1.44 | 7.79 | 35.77 | 55.51 | 41.20 | 23.43 |
| | Alpha Financial Markets Consulting Plc | Consulting Services | Industrials | -7.10 | 30.51 | 31.71 | 17.39 | 13.37 | -4.67 | 10.40 | 37.38 |
| | Alpha Group International Plc | Capital Markets | Financial Services | 0.48 | 1.94 | 11.25 | 21.48 | 32.94 | -2.41 | 10.31 | 10.31 |
| | Alpha Growth Plc | Asset Management | Financial Services | 11.65 | 42.31 | 45.96 | 53.91 | 35.28 | -22.92 | -4.05 | -72.59 |
| | Alpha Real Trust Ltd | Asset Management | Financial Services | -6.61 | -4.35 | -3.15 | 12.19 | 13.71 | 2.99 | -8.32 | -15.12 |
| | Alphawave IP Group Plc | Semiconductors | Technology | 5.92 | 0.17 | -30.59 | -9.23 | 13.46 | 13.46 | -20.91 | -65.29 |
