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Investment trust
IEMImpax Environmental Markets plc
Managed by Impax Asset Management
Latest factsheet
31 Aug 2026
Yearly charge
0.89%
vs asset value
10.5% discount
Dividend yield
1.11%
Holdings
54
Impax Environmental Markets plc's ('IEM' or the 'Company') investment objective is to enable investors to benefit from growth in the markets for cleaner or more efficient delivery of basic services of energy, water and waste. Investments are made predominantly in quoted companies which provide, utilise, implement or advise upon technology-based systems, products or services in environmental markets, particularly those of alternative energy and energy efficiency, water treatment and pollution control, and waste technology and resource management (which includes sustainable food, agriculture and forestry).
10.5% discount — the shares change hands for less than the value of what the trust owns. Unlike an open-ended fund, a trust’s shares are bought and sold on the stock exchange, so their price is whatever buyers and sellers agree — not the value of the portfolio behind them.Share price 450.5 · asset value per share 503.13 (GBP)
Cumulative performance
| Period | Trust | MSCI ACWI |
|---|---|---|
| 1M | +0.90% | +1.90% |
| 3M | -2.30% | +1.30% |
| 1Y | +15.80% | +21.90% |
Annualised performance
| Period | Trust, a year at a time | MSCI ACWI |
|---|---|---|
| 3Y | +7.30% | +17.80% |
| 5Y | +0.90% | +11.20% |
| 10Y | +9.30% | +12.20% |
| Since launch | +7.50% | +9.00% |
Top holdings · top 10: 28.90%
| # | Holding | Weight | |
|---|---|---|---|
| 1 | WASTE CONNECTIONS INC | 3.52% | |
| 2 | SIEMENS ENERGY AG | 3.33% | |
| 3 | NOVONESIS (NOVOZYMES) B | 3.26% | |
| 4 | CONTEMPORARY AMPEREX TECHN-A | 3.17% | |
| 5 | AIR LIQUIDE SA | 3.16% | |
| 6 | KEYENCE CORP | 2.70% | |
| 7 | SSE PLC | 2.63% | |
| 8 | KLA CORP | 2.50% | |
| 9 | SCHNEIDER ELECTRIC SE | 2.34% | |
| 10 | VEOLIA ENVIRONNEMENT | 2.29% |
Key facts
- Stock market ticker
- IEM
- ISIN
- GB0031232498
- Benchmark
- MSCI ACWI
- Currency
- GBP
- Domiciled in
- UK
- Launched
- 22 Feb 2002
- Dividends paid
- Annual
Source factsheets
| Date | Published by the trust |
|---|---|
| 31 Aug 2026 | View original factsheet ↗ |
| 30 Jun 2026 | View original factsheet ↗ |
| 31 May 2026 | View original factsheet ↗ |
| 30 Apr 2026 | View original factsheet ↗ |
| 31 Mar 2026 | View original factsheet ↗ |
| 27 Feb 2026 | View original factsheet ↗ |
| 31 Dec 2025 | View original factsheet ↗ |