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FSMDX — Fidelity Mid Cap Index Fund
Over the last 15 years (2011-09 – 2026-09), $10,000 invested in FSMDX with dividends reinvested grew to $53,822 — 11.80% a year — with a worst peak-to-trough fall of -27.04%. Past performance doesn't predict future results.
Growth of $10,000 · 2011-09 – 2026-09 · dividends reinvested
About FSMDX
Fidelity Mid Cap Index Fund is a mutual fund that aims to closely replicate the performance of the Russell Midcap Index, which tracks the returns and characteristics of mid-capitalization U.S. companies. The fund utilizes a passive, index-tracking strategy, investing at least 80% of its assets in the same securities as its benchmark index, which covers a broad spectrum of industries across the American mid-cap market. This approach provides diversified exposure to approximately 800 of the smallest companies in the Russell 1000 Index, representing sectors such as technology, industrials, financial services, and consumer discretionary. The fund is designed with cost efficiency in mind, boasting a low expense ratio and minimal turnover, making it a notable choice for investors seeking broad mid-cap U.S. equity exposure. With assets exceeding $40 billion and more than 800 holdings, it plays a significant role in the mutual fund market by offering investors a straightforward, low-cost avenue to access mid-sized U.S. companies, which often represent a blend of growth potential and established business operations.
Put FSMDX to the test
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Backtest FSMDX →
Full history, any date range, benchmarks, drawdowns, rolling returns.
Would FSMDX survive 2008? →
What actually happened to it in the crisis — real drawdown and recovery.
Project it forward →
Monte Carlo simulation of where it could go from here.
Compare FSMDX vs VTI →
Head-to-head against the total US market.
Replay $100/mo into FSMDX →
Animated growth of steady monthly contributions.
Fundamentals →
Holdings-level financials where available.
Educational use only — not investment advice. Results are hypothetical.Read full disclaimer
This tool is for educational and informational purposes only and does not provide financial, investment, tax, legal, or accounting advice. Results are hypothetical and based on historical data and assumptions that may be inaccurate. Past performance does not guarantee future results. Consult a licensed professional before making investment decisions.