# Impax Environmental Markets PLC (IEM)

**Source:** https://fundology.uk/fund/iem · ISIN GB0031232498 · Data: TradingView (LSE closes and returns, delayed), issuer documents, ONS CPIH, FCA FIRDS

## At a glance

> Capital at risk. Past performance is not a guide to future returns. The value of investments can fall as well as rise.

As of 30/09/2026, IEM (Impax Environmental Markets PLC, ISIN GB0031232498) closed at £4.50 on the London Stock Exchange. Over the five years to 30/09/2026 its price changed by −13.6% (income paid out is not included), or −31.7% after UK CPIH inflation.

## Summary

Impax Environmental Markets PLC is an investment trust. You buy and sell it through a share-dealing account or platform during stock-market hours, like a share.

Latest close: **£4.50** (30/09/2026).

## Key facts

| Fact | Value |
|---|---|
| Ticker (LSE) | IEM |
| ISIN | GB0031232498 |
| Category | Investment trusts |
| Type | Investment trust |
| Domicile | United Kingdom |

## Past returns (periods to 30/09/2026)

After the fund's ongoing charges. "Income reinvested" is total return; "price only" leaves out income paid out. Real returns are after ONS CPIH inflation.

| Window | Return | After CPIH inflation | Measured as |
|---|---|---|---|
| 1 year | +10.43% | +7.43% | price only |
| 3 years | +25.00% | +13.49% | price only |
| 5 years | -13.63% | -31.70% | price only |

Returns: Fundology, from recorded daily closes. Inflation: ONS CPIH, latest month published.

## Calendar-year returns

Calendar-year returns of Impax Environmental Markets PLC in pounds (price only, income paid out not included): 2022 −23.3%, 2023 −4.6%, 2024 −5.1%, 2025 +4.5%; 2026 to 30/09/2026 +13.5%. Returns of Impax Environmental Markets PLC in pounds (price only, income paid out not included) over the 12 months to 30/09/2026: +14.2%; to 30/09/2025: +0.1%; to 30/09/2024: +6.1%; to 30/09/2023: −6.3%; to 30/09/2022: −26.3%.

| Year | Return | After CPIH inflation | Measured as |
|---|---|---|---|
| 2022 | -23.3% | -29.8% | Price |
| 2023 | -4.6% | -8.4% | Price |
| 2024 | -5.1% | -8.4% | Price |
| 2025 | +4.5% | +0.9% | Price |
| 2026 to 30/09/2026 | +13.5% | +10.3% | Price |

## Risk metrics

| Window | Volatility | Max drawdown |
|---|---|---|
| 1 year | 18.73% | -10.75% |
| 3 years | 17.18% | -19.90% |
| 5 years | 19.85% | -43.40% |

## Largest fall

Volatility of Impax Environmental Markets PLC in pounds, annualised from weekly returns to 30/09/2026: 18.7% over 1 year, 17.2% over 3 years, 19.8% over 5 years. Largest fall in the price of Impax Environmental Markets PLC since October 2021, in pounds: −43.4% from 19/11/2021 to 11/04/2025. The lowest 12-month return of Impax Environmental Markets PLC in pounds (price only, income paid out not included) since January 2021 was −25.7% (12 months to 16/12/2022); the highest was +35.4% (12 months to 10/04/2026). On 30/09/2026 the price of Impax Environmental Markets PLC was 21.9% below its highest weekly close since October 2021 (19/11/2021), in pounds.

## Charges & eligibility

- ISA eligible: yes
- SIPP eligible: yes

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Capital at risk. Past performance is not a guide to future returns. The value of investments can fall as well as rise.