PMFSX — MidCap S&P 400 Index Fund
Data updated: 2026-09-25
PMFSX — MidCap S&P 400 Index Fund. United States Mid Cap Blend / Core Equity · $1.37B AUM · 0.54% expense ratio. Holdings, fees, performance and SEC filings.
PMFSX Fund Overview
PMFSX — MidCap S&P 400 Index Fund is a US mutual fund managed by Principal Funds, Inc., categorised as United States Mid Cap Blend / Core Equity. ABC INVEST provides holdings, performance, costs, cashflows, risk data, prospectus documents and SEC filings, sourced from SEC filings.
- Type: US mutual fund
- Manager: Principal Funds, Inc.
- Category: United States Mid Cap Blend / Core Equity
- Assets under management: $1.37B
- 1-year return: 32.2%
- Ticker: PMFSX
- SEC CIK: 0000898745
- SEC series ID: S000007079
- Share class ID: C000019347
PMFSX Investment Objective and Strategy
MidCap S&P 400 Index Fund describes its objective and strategy as follows, from its latest prospectus filed with the SEC by Principal Funds, Inc..
Investment objective
The Fund seeks long-term growth of capital.
Principal investment strategy
"Under normal circumstances, the Fund invests at least 80% of its net assets, plus any borrowings for investment purposes, in equity securities of companies that compose the Standard & Poor's (""S&P"") MidCap 400 Index (the ""Index"") at the time of purchase. The Index is designed to represent U.S. equities with risk/return characteristics of the mid cap universe, which include growth and value stocks. As of December 31, 2017 , the market capitalization range of the companies comprising the Index was between approximately $626.1 million and $13.1 billion . Each component stock of the Index is weighted in proportion to its total market value. The Index is rebalanced quarterly. The Fund employs a passive investment approach designed to attempt to track the performance of the Index. In seeking its objective, the Fund typically employs a replication strategy which involves investing in all the securities that make up the Index, in the same proportions as the Index.
The Fund utilizes derivative strategies and exchange-traded funds (""ETFs""). A derivative is a financial arrangement, the value of which is derived from, or based on, a traditional security, asset, or market index. Specifically, the Fund invests in index futures and equity ETFs on a daily basis to gain exposure to the Index in an effort to minimize tracking error relative to the benchmark. Note: Standard & Poor's MidCap 400"" and ""S&P MidCap 400"" are trademarks of S&P Global and have been licensed by Principal. The Fund is not sponsored, endorsed, sold or promoted by S&P Global and S&P Global makes no representation regarding the advisability of investing in the Fund."
PMFSX Holdings
Top 10 holdings of MidCap S&P 400 Index Fund by percentage of net assets, from the fund's latest SEC N-PORT filing.
| Holding | % of net assets |
|---|---|
| Illumina Inc | 0.86% |
| Twilio Inc | 0.83% |
| TechnipFMC PLC | 0.80% |
| Curtiss-Wright Corp | 0.75% |
| Carpenter Technology Corp | 0.72% |
| ATI Inc | 0.71% |
| nVent Electric PLC | 0.69% |
| Everpure Inc | 0.68% |
| Okta Inc | 0.66% |
| XPO Inc | 0.66% |
PMFSX Portfolio Allocation
Asset-class allocation of MidCap S&P 400 Index Fund by percentage of net assets, from the latest SEC N-PORT filing.
| Asset class | Allocation |
|---|---|
| Equity | 99.6% |
| Cash & Equivalents | 0.5% |
PMFSX Performance
Total returns for PMFSX (as of 2026-10-01), from SEC filings.
| Period | Total return |
|---|---|
| 1 year | 32.2% |
| 3 years (annualised) | 4.6% |
| 5 years (annualised) | 10.8% |
PMFSX Risk Information
Risk metrics for PMFSX, derived from monthly returns in SEC filings.
- 1-year volatility (annualised): 16.1%
PMFSX Costs and Fees
PMFSX costs about $54 per $10,000 invested per year in fund expenses.
- Net expense ratio: 0.54%
- Gross expense ratio: 0.54%
- Portfolio turnover: 16%
- Brokerage commissions: 1.02 bps of average net assets (SEC N-CEN)
PMFSX Cashflows
Over the 12 months to 2026-04, MidCap S&P 400 Index Fund had net outflows of $55.04M, from monthly SEC N-PORT filings.
| Month | Net flow |
|---|---|
| 2026-04 | −$25.91M |
| 2026-03 | $11.03M |
| 2026-02 | −$7.52M |
| 2026-01 | −$21.56M |
| 2025-12 | $108.79M |
| 2025-11 | −$5.85M |
PMFSX Debt Constituents
No individual debt constituents are reported in MidCap S&P 400 Index Fund's latest SEC N-PORT filing.
PMFSX Prospectus and SEC Filings
Official MidCap S&P 400 Index Fund filings on SEC EDGAR — prospectus, portfolio holdings and annual reports.
- Prospectus (485BPOS) — filed 2026-02-27
- Prospectus (485BPOS) — filed 2025-02-26
- Prospectus (485BPOS) — filed 2024-02-27
- Portfolio holdings (N-PORT) — filed 2026-09-25
- Portfolio holdings (N-PORT) — filed 2026-06-25
- Portfolio holdings (N-PORT) — filed 2026-03-25
- Annual census (N-CEN) — filed 2026-01-14
- Annual census (N-CEN) — filed 2025-01-13
Related Funds
Other United States Mid Cap Blend / Core Equity funds tracked on ABC INVEST:
Data Sources
ABC INVEST compiles this page from public filings made to the U.S. Securities and Exchange Commission (SEC) through EDGAR: portfolio holdings and monthly cashflows from Form N-PORT, expenses and returns from fund prospectuses (Form 485BPOS) and the SEC DERA Risk/Return Summary data sets, annual data from Form N-CEN, and shareholder reports from Form N-CSR.