Fidelity Mid Cap Growth Index Fund
Fidelity Salem Street Trust · 1 share class
Fund classification
Classified from what the fund holds · as of 2026 Q2
Fidelity Mid Cap Growth Index Fund is a U.S. equity index fund that tracks the Russell Midcap Growth Index. 42% of FMDGX’s stock holdings are in companies whose revenue grew in the top quartile of U.S. companies over the last five fiscal years (covering 90% of the fund’s equity).
- Asset class
- Equity
- Region
- United States
- Management
- Index (passive)
- Fund type
- Open-end fund
Fund profile
As filed in the prospectus · 2025 Q3
Fidelity Mid Cap Growth Index Fund seeks to provide investment results that correspond to the total return of stocks of mid-capitalization U.S. companies.
The fund tracks the Russell Midcap Growth Index using statistical sampling techniques, holding a representative portfolio of mid-cap U.S. stocks selected for higher growth and valuation characteristics. Because the fund samples rather than holds all index constituents, its returns may diverge from the index. Effective March 24, 2025, the index applies concentration limits capping any single holding at 22.5% and restricting the largest constituents to 45% combined weight.
| Share class | Expense ratio |
|---|---|
| FMDGX | 0.05% |
Portfolio turnover 53.00% · as of 2025 Q3
Allocation
Asset groups · long / short shown separately, never netted · 2026 Q2
| Stocks | 99.45% |
| Cash & short-term | 2.13% |
| Bonds | 0.01% |
| Derivatives | 0.01% |
Derivatives are shown at market value, not notional exposure.
Sector allocation
The same holdings as Allocation above, grouped by market sector instead of asset type · as of 2026 Q2
| Information Technology | 29.6% |
| Industrials | 20.2% |
| Health Care | 12.1% |
| Consumer Discretionary | 10.6% |
| 11 smaller | 27.6% |
Government, Securitized and Cash are non-corporate buckets; International is foreign holdings we don’t sector-classify, and Other is the residual (held funds, unresolved names).
Portfolio growth profile
How much of the fund’s stock holdings are in fast-growing companies · as of 2026 Q2
Share of the fund’s equity (by value) in companies whose trailing five-year revenue — or net-income — growth ranks in the top 25% of U.S. public companies. Foreign and newly-listed holdings are excluded, so the figure covers only part of the book. From SEC filings — not investment advice. How we measure this.
Latest quarter
What changed since the fund's previous filing
Return profile
Total return as filed — price change plus distributions reinvested · trailing figures to 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.
Debt profile
What this fund holds — value-weighted across its bond and securitized long positions · as of 2026-06-30
Share of the fund's debt by how its coupon behaves — the fact that decides whether a rate move reaches this portfolio at all.
| Fixed rate | 100.0% |
Share of the fund's debt value in each maturity band, shortest first.
| <1y | 100.0% |
Based on what filers reported; a filer that never reported a flag also reads as none.
Holdings
By % of NAV · equity positions carry filed share counts · every resolvable issuer links to its company page
| Ticker | Issuer | %NAV | Reported price | Value | Shares |
|---|---|---|---|---|---|
| DDOG | DATADOG INCDDOG | 2.33% | $260.36 | $91.52M | 351.5K |
| SNOW | SNOWFLAKE INCSNOW | 2.32% | $254.50 | $91.22M | 358.4K |
| NET | CLOUDFLARE INCNET | 2.11% | $245.28 | $82.96M | 338.2K |
| TER | TERADYNE INCTER | 2.06% | $483.84 | $81.10M | 167.6K |
| ALAB | ASTERA LABS INCALAB | 2.02% | $483.02 | $79.14M | 163.8K |
| SPG | SIMON PROPERTY GROUP INCSPG | 1.95% | $223.65 | $76.48M | 341.9K |
| FIX | COMFORT SYSTEMS USA INCFIX | 1.88% | $1,981.95 | $73.94M | 37.3K |
| — | Fidelity Revere Street Trust | 1.75% | — | $68.53M | — |
| HOOD | ROBINHOOD MARKETS INCHOOD | 1.74% | $100.28 | $68.27M | 680.8K |
| LITE | LUMENTUM HOLDINGS INCLITE | 1.66% | $858.06 | $65.25M | 76.0K |
Reported price is the fund's own reported value divided by its own reported shares at 2026-06-30 — not a live quote, and not what the fund paid.
Top 10 positions are 19.82% of net assets, top 25 39.21%, across 268 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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