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Fidelity Mid Cap Index Fund

FSMDX
Large Blend
Fidelity

The fund invests normally at least 80% of its assets in securities included in the Russell Midcap® Index. It lends securities to earn income.

Expense Ratio
0.00%
What's an expense ratio?
5-Year Return
+7.62%
How to read fund performance
Volatility
+14.62%
What is volatility?
Total Assets
$46.6K
Performance History
1-Year Return+14.72%
3-Year Return+16.38%
5-Year Return+7.62%
10-Year Return+213.06%
Fund Details
Minimum Investment$0
Fund ManagerFidelity Management Team
Inception Date2011-09-07
Assets Under Management$46,575 M
Data Last UpdatedApr 13, 2026
How to Invest in FSMDX

Buy directly from Fidelity

Fidelity funds can be purchased directly through their website, typically with no transaction fee.0

Visit Fidelity.com

Affiliate disclosure: Some links on this page are affiliate links. If you open an account through a link on this site, we may earn a commission at no additional cost to you. This does not influence our fund data or analysis. Learn more.

Investment Calculators

Fee Impact Calculator

Fee Impact Calculator
See how fees would impact your investment in Fidelity Mid Cap Index Fund
Calculating for:
FSMDX

Fidelity Mid Cap Index Fund

Pre-filled with FSMDX's historical average return

FSMDX's actual expense ratio

Comparison fund (e.g., actively managed)

Results
Future value after 30 years
Enter your values and click “Calculate Impact” to see results

Note: This calculator uses simplified assumptions based on FSMDX's historical performance. It does not account for taxes, inflation, or varying returns. Past performance does not guarantee future results.

Return Simulator

Return Projection Simulator
Project your portfolio's future value with Fidelity Mid Cap Index Fund
Projecting for:
FSMDX

Fidelity Mid Cap Index Fund

How much are you investing today?

How much will you contribute each month?

How long will you invest for?

Pre-filled with FSMDX's historical average return

Projection Results
Estimated portfolio value after 30 years
Enter your parameters and click “Simulate Returns” to see projections

Important: This projection uses simplified assumptions based on FSMDX's historical performance. Actual investment returns vary year-to-year. Past performance does not guarantee future results. This tool is for educational purposes only.

Top Holdings

GLWCorning Inc
0.00%
HWMHowmet Aerospace Inc
0.00%
VRTVertiv Holdings Co Class A
0.00%
WDCWestern Digital Corp
0.00%
SNDKSanDisk Corp Ordinary Shares
0.00%
BKBank of New York Mellon Corp
0.00%
PWRQuanta Services Inc
0.00%
CMICummins Inc
0.00%
RCLRoyal Caribbean Group
0.00%
HLTHilton Worldwide Holdings Inc
0.00%

Top holdings shown as percentage of fund assets. Data sourced from fund filings. Holdings may change over time.

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VINIX
Vanguard

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Expense Ratio0.00%
5-Year Return+13.66%
VFIAX
Vanguard

Vanguard 500 Index Fd Admiral S

Expense Ratio0.00%
5-Year Return+11.67%
FXAIX
Fidelity

Fidelity 500 Index Fund

Expense Ratio0.00%
5-Year Return+11.64%
SWPPX
Schwab

Schwab® S&P 500 Index Fund",

Expense Ratio0.00%
5-Year Return+11.71%

Frequently Asked Questions

What is FSMDX?

FSMDX is the ticker symbol for Fidelity Mid Cap Index Fund, a Large Blend mutual fund managed by Fidelity. The fund invests normally at least 80% of its assets in securities included in the Russell Midcap® Index. It lends securities to earn income.

What is the expense ratio for FSMDX?

FSMDX has an expense ratio of 0.00% per year. On a $10,000 investment, that amounts to roughly $0 annually in fund fees. This is considered a very low-cost fund.

How has FSMDX performed historically?

FSMDX has posted a 1-year return of +14.72%, 3-year return of +16.38%, 5-year return of +7.62%, 10-year return of +213.06%. Past performance does not guarantee future results. Returns are annualized for periods greater than one year.

What is the minimum investment for FSMDX?

FSMDX has no minimum initial investment requirement, making it accessible to all investors regardless of account size.

Is FSMDX a good investment?

Whether FSMDX is right for you depends on your investment goals, time horizon, and risk tolerance. Key factors to evaluate include its 0.00% expense ratio, Large Blend category exposure, historical returns, and how it fits within your broader portfolio. We recommend comparing it against similar funds in the same category and consulting a qualified financial advisor.

Important: Past performance does not guarantee future results. This information is provided for educational purposes only and should not be considered investment advice. Please consult with a financial advisor before making investment decisions.

Compare Mutual Funds LogoCMF

Compare mutual funds with transparent, data-driven insights. Make informed investment decisions.

Product

  • Compare Funds
  • Learning Center
  • Fee Calculator
  • Return Simulator

Company

  • About Us

Legal

  • Disclosures
  • Privacy Policy
  • Terms of Service

© 2026 CompareMutualFunds. All rights reserved.

Investment information provided for educational purposes only. Past performance does not guarantee future results.