Impax Sustainable Allocation Fund

IMPAX FUNDS SERIES TRUST I · 2 share classes

Fund of funds
One fund, 2 share classes:PAXWXPAXIX
$2.40B NAV
10 positions · as of 2026-06-30 · filed 2026-08-19

Fund profile

As filed in the prospectus · 2026 Q2

The Sustainable Allocation Funds primary investment objective is to seek income and conservation of principal.

Strategy · summarised

The fund invests through a team-managed allocation among multiple underlying Impax funds, which themselves hold companies positioned to benefit from the transition to a sustainable economy and screened using proprietary corporate and issuer resilience analysis covering governance, environmental and social risk management, climate risk, and human capital. The adviser allocates approximately 50–75% to equities and 25–50% to debt securities across underlying funds based on market outlook, valuations, and economic factors, and may adjust allocations without notice. The fund adheres to a fossil fuel policy excluding companies deriving revenues from fossil fuel exploration and production, or more than 5% from refining and distribution unless credible net-zero transition plans exist. Because the fund's returns depend on the adviser's allocation decisions among underlying funds, performance will diverge from any single benchmark.

Expenses
0.69% 0.94%across 2 share classes
Share classExpense ratio
PAXWX0.94%
PAXIX0.69%

Portfolio turnover 13.00% · as of 2026 Q2

Allocation

Asset groups · long / short shown separately, never netted · 2026 Q2

99.95%
of net assets
Other96.01%
Cash & short-term3.94%

Latest quarter

What changed since the fund's previous filing

2026Q2 vs 2026Q1: 0 new0 exited

Return profile

Chart:

Total return as filed — price change plus distributions reinvested · trailing figures to Apr 2026

Share class1-year3-year5-yearVolWorst fall
+15.38%+27.22%+26.97%8.33%-7.66%
+15.68%+28.24%+28.59%8.32%-7.51%

These classes hold the same portfolio, so the 1.62pp spread over 5 years is the cost difference between them — roughly 0.32pp a year — not a difference in what they own.

Cumulative return· Jul 2023 – Apr 2026

May 2026 and Jun 2026 have been filed since the trailing figures were struck, so they are not in the table above or the curve — every figure here shares one cut-off, which is what makes them comparable with other funds.

Holdings

By % of NAV · equity positions carry filed share counts · every resolvable issuer links to its company page

Issuer%NAVValue
Impax Core Bond FundPXBIX32.22%$772.55M
Impax US Sustainable Economy Fund26.04%$624.27M
Impax Large Cap FundPXLIX10.35%$248.04M
Impax International Sustainable Economy Fund8.81%$211.19M
Impax Small Cap Fund6.16%$147.70M
Impax High Yield Bond FundPXHIX5.06%$121.33M
JPMorgan U.S. Treasury Plus Money Market Fund3.94%$94.45M
Impax Global Sustainable Infrastructure ETF3.00%$71.81M
Impax Global Environmental Markets Fund2.27%$54.51M
Impax Global Opportunities FundPXGOX2.11%$50.61M
Showing 10 of 10

Top 10 positions are 99.95% of net assets, top 25 99.95%, across 10 issuers.

See more of this fund's book

More positions with filed share counts, and the quarter-over-quarter change list rather than the largest few — free with an account, no card required.

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