PIIOX

Principal International Equity Index Fund

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Prospectus

    Principal International Equity Index Fund

    Fund details

    as of 12/03/2025 unless indicated otherwise
    Fund ticker
    PIIOX
    CUSIP
    742553357
    Benchmark
    MSCI EAFE NTR Index
    NAV
    $13.71
    Total fund assets
    $1.55B
    Dividend frequency
    Annually
    Minimum investment
    —
    Inception date
    12/30/2009
    Morningstar category
    Foreign Large Blend
    Investment approach
    The investment seeks long-term growth of capital. The fund invests at least 80% of its net assets, plus any borrowings for investment purposes, in securities that compose the MSCI EAFE Index. The index is a market-weighted equity index designed to measure the equity performance of developed markets, excluding the United States and Canada. The advisor employs a passive investment approach designed to attempt to track the performance of the index.

    Performance & expenses

    As of 11/30/2025
    Name 1 month 3 month YTD 1-year 3-year 5-year 10-year Since inception Overall
    Total return 0.59% 3.73% 27.00% 23.36% 14.53% 8.61% 6.93% 5.63% —
    Benchmark performance — — — — — — — — —
    Morningstar category average — — — — — — — — —
    Morningstar percentile rankings — — — 62 60 49 75 — —
    # of funds in category 699 700 690 681 649 618 473 — 649
    Morningstar rating — — — — —
    Returns represent past performance and do not guarantee future results. Share price, principal value, and return will vary and you may have a gain or loss when shares are sold. Current performance may be lower or higher than quoted.
    Returns shown for periods of less than one year are not annualized.
    Index performance information: no deductions for fees, expenses or taxes. Indices are unmanaged and individuals cannot invest directly in an index.

    Ratings

    Morningstar Medalist Rating™

    as of 10/31/2025  |  649 funds  |  Analyst-Driven %: 90  |  Data Coverage %: 98

    Morningstar ratings

    as of 10/31/2025
    3-year
    649 funds
    5-year
    618 funds
    10-year
    473 funds
    Overall
    649 funds
    3 year | 649 funds
    5 year | 618 funds
    10 year | 473 funds
    Overall | 649 funds

    Holdings

    Top 10

    as of 10/31/2025
    % of Assets
    % of Assets
    1. Principal Government Money Mar
    11.47%
    2. iShares MSCI EAFE ETF
    3.02%
    3. ASML Holding NV
    2.03%
    4. SAP SE
    1.32%
    5. AstraZeneca PLC
    1.25%
    6. Nestle SA
    1.20%
    7. HSBC Holdings PLC
    1.19%
    8. Novartis AG
    1.15%
    9. Roche Holding AG
    1.11%
    10. Shell PLC
    1.08%
    The holdings listed do not constitute a recommendation to purchase or sell a particular security. Cash and/or derivative positions that are not part of the core investment strategy will not be reflected in the top holdings list.
    May not reflect current holdings or allocations.

    Portfolio characteristics

    # of holdings
    as of 11/30/2025
    697
    Active share
    as of 11/30/2025
    2.08%
    Turnover ratio
    as of 02/28/2025
    25.90%
    Weighted avg mark cap
    as of 11/30/2025
    101,487.93
    Alpha (3-year)
    as of 10/31/2025
    -1.44
    Beta (3-year)
    as of 10/31/2025
    1.06
    R-squared (3-year)
    as of 10/31/2025
    96.76
    Sharpe ratio (3-year)
    as of 10/31/2025
    0.96
    Standard deviation (3-year)
    as of 10/31/2025
    14.42
    Tracking error (3-year)
    as of 10/31/2025
    2.73
    May not reflect current holdings or allocations.

    Portfolio management

    Tyler O'Donnell, CFA
    10 years of experience
    Aaron Siebel, CFA
    20 years of experience

    Literature

    Investment materials

    Portfolio holdings

    Disclosures
    Principal Funds are distributed by Principal Funds Distributor, Inc. ALPS Distributors, Inc. is the distributor of the Principal ETFs. ALPS Distributors, Inc. and the Principal Funds are not affiliated.
    The holdings listed do not constitute a recommendation to purchase or sell a particular security. Cash and/or derivative positions that are not part of the core investment strategy will not be reflected in the top holdings list.
    Each index based investment option is invested in the stocks of the index it tracks. Performance of indices reflects the unmanaged result for the market segment the selected stocks represent. There is no assurance an index-based investment option will match the performance of the index tracked. Investors cannot invest directly in an index.
    NOT FDIC INSURED - MAY LOSE VALUE - NO BANK GUARANTEE
    International investing involves greater risks such as currency fluctuations, political/social instability, and differing accounting standards.
    Morningstar percentile rankings are based on total returns and do not reflect the inclusion of sales charges. If sales charges were reflected, rankings could be lower.
    Performance assumes reinvestment of all dividends and capital gains.
    Principal Global Investors is the Investment Adviser of all funds included in the Principal Funds, Inc. Principal Funds are managed by Principal Global Investors, its boutique affiliates, and by many leading sub-advisors.
    To obtain a prospectus, download prospectus online or call Customer Service at 1-800-222-5852 . Carefully consider a fund’s objectives, risks, charges, and expenses. The prospectus, or summary prospectus if available, contains this and other information. Please read it carefully before investing.
    The MSCI EAFE Index is an equity index which captures large and mid cap representation across 21 Developed Markets countries* around the world, excluding the US and Canada. With 829 constituents, the index covers approximately 85% of the free floatadjusted market capitalization in each country.
    © 2025 Morningstar, Inc. All rights reserved. The information contained herein: (1) is proprietary to Morningstar and/or its content providers; (2) may not be copied or distributed; and (3) is not warranted to be accurate, complete, or timely. Neither Morningstar nor its content providers are responsible for any damages or losses arising from any use of this information. Past performance is no guarantee of future results.
    The Morningstar Medalist Rating™ is the summary expression of Morningstar’s forward-looking analysis of investment strategies as offered via specific vehicles using a rating scale of Gold, Silver, Bronze, Neutral, and Negative. The Medalist Ratings indicate which investments Morningstar believes are likely to outperform a relevant index or peer group average on a risk-adjusted basis over time. Investment products are evaluated on three key pillars (People, Parent, and Process) which, when coupled with a fee assessment, forms the basis for Morningstar’s conviction in those products’ investment merits and determines the Medalist Rating they’re assigned. Pillar ratings take the form of Low, Below Average, Average, Above Average, and High. Pillars may be evaluated via an analyst’s qualitative assessment (either directly to a vehicle the analyst covers or indirectly when the pillar ratings of a covered vehicle are mapped to a related uncovered vehicle) or using algorithmic techniques. Vehicles are sorted by their expected performance into rating groups defined by their Morningstar Category and their active or passive status. When analysts directly cover a vehicle, they assign the three pillar ratings based on their qualitative assessment, subject to the oversight of the Analyst Rating Committee, and monitor and reevaluate them at least every 14 months. When the vehicles are covered either indirectly by analysts or by algorithm, the ratings are assigned monthly. For more detailed information about these ratings, including their methodology, please go to https://shareholders.morningstar.com/investor-relations/governance/Compliance--Disclosure/default.aspx .
    The Morningstar Medalist Ratings are not statements of fact, nor are they credit or risk ratings. The Morningstar Medalist Rating (i) should not be used as the sole basis in evaluating an investment product, (ii) involves unknown risks and uncertainties which may cause expectations not to occur or to differ significantly from what was expected, (iii) are not guaranteed to be based on complete or accurate assumptions or models when determined algorithmically, (iv) involve the risk that the return target will not be met due to such things as unforeseen changes in management, technology, economic development, interest rate development, operating and/or material costs, competitive pressure, supervisory law, exchange rate, tax rates, exchange rate changes, and/or changes in political and social conditions, and (v) should not be considered an offer or solicitation to buy or sell the investment product. A change in the fundamental factors underlying the Morningstar Medalist Rating can mean that the rating is subsequently no longer accurate.
    The Analyst-Driven % data point displays the weighted percentage of a vehicle’s pillar ratings assigned directly or indirectly by analysts.
    The Data Coverage % data point is a summary metric describing the level of data completeness used to generate the overall rating.