FMDGX — Fidelity Mid Cap Growth Index Fund
Data updated: 2026-05-26
FMDGX — Fidelity Mid Cap Growth Index Fund data: holdings, portfolio allocation, expenses, performance, cashflows, risk and SEC filings. United States Mid Cap Growth Equity · $3.41B AUM · 0.05% expense ratio · 9.5% 1-yr return. From SEC regulatory filings.
FMDGX Fund Overview
FMDGX — Fidelity Mid Cap Growth Index Fund is a US mutual fund managed by Fidelity Salem Street Trust, categorised as United States Mid Cap Growth Equity. ABC INVEST provides holdings, performance, costs, cashflows, risk data, prospectus documents and SEC filings, sourced from SEC filings.
- Type: US mutual fund
- Manager: Fidelity Salem Street Trust
- Category: United States Mid Cap Growth Equity
- Assets under management: $3.41B
- 1-year return: 9.5%
- Ticker: FMDGX
- SEC CIK: 0000035315
- SEC series ID: S000065748
- Share class ID: C000212596
FMDGX Holdings
Top 10 holdings of Fidelity Mid Cap Growth Index Fund by percentage of net assets, from the fund's latest SEC N-PORT filing.
| Holding | % of net assets |
|---|---|
| Vertiv Holdings Co. | 3.42% |
| Fidelity Revere Street Trust | 3.33% |
| Howmet Aerospace, Inc. | 3.32% |
| Royal Caribbean Cruises Ltd. | 2.50% |
| Hilton Worldwide Holdings, Inc. | 2.49% |
| Cloudflare, Inc. | 2.32% |
| Quanta Svcs, Inc. | 2.25% |
| Cencora, Inc. | 2.06% |
| Targa Res Corp. | 1.91% |
| Vistra Corp. | 1.82% |
FMDGX Portfolio Allocation
Asset-class allocation of Fidelity Mid Cap Growth Index Fund by percentage of net assets, from the latest SEC N-PORT filing.
| Asset class | Allocation |
|---|---|
| Equity | 99.6% |
| Cash & Equivalents | 3.6% |
FMDGX Performance
Total returns for FMDGX (as of 2026-08-01), from SEC filings.
| Period | Total return |
|---|---|
| YTD | -6.4% |
| 1 year | 9.5% |
| 3 years (annualised) | 12.7% |
| 5 years (annualised) | 5.3% |
FMDGX Risk Information
Risk metrics for FMDGX, derived from monthly returns in SEC filings.
- 1-year volatility (annualised): 13.5%
FMDGX Costs and Fees
FMDGX costs about $5 per $10,000 invested per year in fund expenses.
- Net expense ratio: 0.05%
- Gross expense ratio: 0.05%
- Portfolio turnover: 53%
- Brokerage commissions: 0.39 bps of average net assets (SEC N-CEN)
FMDGX Cashflows
Over the 12 months to 2026-03, Fidelity Mid Cap Growth Index Fund had net inflows of $1.40B, from monthly SEC N-PORT filings.
| Month | Net flow |
|---|---|
| 2026-03 | −$83.58M |
| 2026-02 | $86.60M |
| 2026-01 | $77.04M |
| 2025-12 | $100.45M |
| 2025-11 | $71.03M |
| 2025-10 | $41.64M |
FMDGX Debt Constituents
Largest debt holdings of Fidelity Mid Cap Growth Index Fund by percentage of net assets, from the latest SEC N-PORT filing.
| Debt holding | % of net assets |
|---|---|
| Ust Bills | 0.02% |
FMDGX Prospectus and SEC Filings
Official Fidelity Mid Cap Growth Index Fund filings on SEC EDGAR — prospectus, portfolio holdings and annual reports.
Related Funds
Other United States Mid Cap Growth 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.