Fidelity Flex 500 Index Fund (FDFIX) Stock Analysis
For informational purposes only. Not financial advice. Analysis by Sedat ANAK, Founder & Editor-in-Chief | AI-powered analysis. Data sourced from SEC filings and institutional-grade financial providers. Editorially reviewed. Not financial advice.
Fidelity Flex 500 Index Fund (FDFIX) trades at $32.22 with AI Score 44/100 (Grade C). Fidelity Flex 500 Index is a mutual fund that tracks the performance of the Fidelity U. S. Market cap: $9.16B, Sector: N/a.
Price as of Jul 12, 2026 · Last analyzed: Mar 16, 2026Analyst Coverage for FDFIX: FDFIX does not currently have published analyst price targets in our coverage universe. This is common for smaller-cap names with limited Wall Street coverage. In the absence of analyst consensus, our AI model evaluates FDFIX against N/A peers across nine fundamental dimensions and assigns an underweight signal based on the underlying data.
FDFIX: the 3 scored disciplines are evenly split. Dominant signal: Izzy Englander bullish.
How is this calculated? →Why this analysis is different
- A 9-signal quantitative MoonshotScore built from filings, insider activity, and market data — computed from the numbers, not from opinion.
- An AI Council read across up to eight perspectives — value, macro, quantitative, and momentum lenses — that shows where they disagree instead of averaging the tension away.
- Figures come straight from FMP and Yahoo Finance filings data. The AI writes the narrative around the numbers — it never edits the numbers.
Fidelity Flex 500 Index Fund (FDFIX) Business Overview & Investment Profile
Fidelity Flex 500 Index (FDFIX) is a passively managed mutual fund designed to mirror the performance of the Fidelity U.S. Large Cap IndexSM. It offers investors exposure to a diversified portfolio of U.S. large-capitalization stocks through a float-adjusted, market capitalization-weighted strategy, providing a cost-effective way to track the broader market.
What Is the Investment Thesis for FDFIX?
Fidelity Flex 500 Index (FDFIX) presents an investment opportunity for investors seeking broad exposure to the U.S. large-cap equity market. The fund's passive management strategy and low expense ratio make it a noteworthy option for investors looking to track the performance of the Fidelity U.S. Large Cap IndexSM. With a market cap of $9.16B and a beta of 1.00, FDFIX offers a diversified portfolio of U.S. large-cap stocks. Growth catalysts include continued growth in the U.S. economy and positive sentiment towards large-cap equities. The fund's performance is closely tied to the performance of the underlying index, making it a suitable investment for investors who believe in the long-term growth potential of the U.S. large-cap market. However, potential risks include market volatility and economic downturns, which could negatively impact the fund's performance.
Based on FMP financials and quantitative analysis
FDFIX Key Highlights
- Market Cap: $8.15 billion, indicating substantial size and liquidity.
- Beta: 1.00, suggesting the fund's volatility is similar to the overall market.
- Passive Management: Aims to replicate the Fidelity U.S. Large Cap IndexSM, offering a cost-effective approach.
- Diversified Portfolio: Provides exposure to a broad range of U.S. large-cap stocks.
- Low Expense Ratio: Offers a cost-effective way to track the U.S. large-cap market.
Who Are FDFIX's Competitors?
FDFIX is benchmarked below against 5 industry peers on price, market cap, and our AI MoonshotScore.
| Company | Price | Change | Market Cap | AI Score |
|---|---|---|---|---|
| FCPGX Fidelity Small Cap Growth Fund | $43.37 | -1.12% | $9.28B | 44 |
| FMCSX Fidelity Mid-Cap Stock Fund | $52.21 | -0.36% | $9.40B | 47 |
| FOSKX Fidelity Overseas Fund | $76.11 | +0.07% | $7.87B | 46 |
| FZILX Fidelity International Index Fund | $16.87 | +0.42% | $12.1B | 47 |
| PMEGX T. Rowe Price Institutional Mid-Cap Equity Growth Fund | $53.87 | -0.44% | $6.65B | 44 |
AI Score by Stock Expert AI · Price data: FMP / Yahoo Finance
What Are FDFIX's Key Strengths?
- Low expense ratio
- Passive management strategy
- Diversified portfolio of U.S. large-cap stocks
- Strong brand reputation of Fidelity Investments
What Are FDFIX's Weaknesses?
- Limited potential for outperformance due to passive management
- Performance is tied to the performance of the underlying index
- Vulnerable to market downturns and economic volatility
- No dividend yield
What Could Drive FDFIX Stock Higher?
- Continued growth in the U.S. economy and positive sentiment towards large-cap equities.
- Increasing adoption of passive investment strategies.
- Potential launch of new index-tracking products by Fidelity.
- Integration with robo-advisory platforms.
What Are the Key Risks for FDFIX?
- Market volatility and economic downturns could negatively impact the fund's performance.
- Increased competition from other index funds and ETFs.
- Changes in the composition of the underlying index could affect the fund's returns.
- Regulatory changes impacting the investment management industry.
What Are the Growth Opportunities for FDFIX?
- Increased Adoption of Passive Investing: The growing trend of investors shifting towards passive investment strategies presents a significant growth opportunity for FDFIX. As investors seek low-cost, diversified investment options, the demand for index funds like FDFIX is expected to increase. This trend is driven by the recognition that passive funds often outperform actively managed funds over the long term, especially after accounting for fees. The market size for passive investments is estimated to be in the trillions of dollars, with continued growth projected over the next decade. Timeline: Ongoing.
- Expansion of Fidelity's Distribution Network: Fidelity Investments' extensive distribution network provides FDFIX with a competitive advantage in reaching a wide range of investors. By leveraging its existing relationships with financial advisors, retirement plan sponsors, and individual investors, Fidelity can increase the visibility and accessibility of FDFIX. This can lead to increased inflows and asset growth for the fund. The market size for investment products distributed through Fidelity's network is substantial, offering significant potential for FDFIX to expand its investor base. Timeline: Ongoing.
- Development of New Index-Tracking Products: Fidelity could expand its suite of index-tracking products to cater to different investment objectives and risk profiles. This could involve launching new funds that track different segments of the market, such as mid-cap, small-cap, or international equities. By offering a broader range of index funds, Fidelity can attract a wider range of investors and increase its overall market share in the passive investment space. The market size for specialized index funds is growing, driven by investors seeking more targeted exposure to specific market segments. Timeline: Upcoming.
- Integration with Robo-Advisory Platforms: The increasing popularity of robo-advisory platforms presents a growth opportunity for FDFIX. By partnering with or integrating into these platforms, Fidelity can make FDFIX available to a new segment of investors who prefer automated investment solutions. Robo-advisors typically offer low-cost, diversified portfolios that align with investors' risk tolerance and financial goals. The market size for robo-advisory services is expanding rapidly, driven by the increasing adoption of technology in the financial services industry. Timeline: Upcoming.
- Increased Focus on Tax-Efficient Investing: As investors become more aware of the impact of taxes on their investment returns, there is a growing demand for tax-efficient investment strategies. FDFIX, as a passively managed index fund, is inherently more tax-efficient than actively managed funds due to its lower turnover rate. By highlighting the tax benefits of FDFIX, Fidelity can attract investors who are seeking to minimize their tax liabilities. The market size for tax-efficient investment products is substantial, particularly among high-net-worth individuals and taxable accounts. Timeline: Ongoing.
What Opportunities Does FDFIX Have?
- Growing demand for passive investment strategies
- Expansion of Fidelity's distribution network
- Development of new index-tracking products
- Integration with robo-advisory platforms
What Threats Does FDFIX Face?
- Increased competition from other index funds and ETFs
- Market volatility and economic downturns
- Changes in the composition of the underlying index
- Regulatory changes impacting the investment management industry
What Are FDFIX's Competitive Advantages?
- Brand Reputation: Fidelity Investments has a strong brand reputation and a long history of providing investment products and services.
- Scale: The fund benefits from Fidelity's large asset base and economies of scale.
- Low Expense Ratio: FDFIX offers a competitive expense ratio compared to other index funds.
- Passive Management: The fund's passive management strategy provides a cost-effective way to track the U.S. large-cap market.
What Does FDFIX Do?
Fidelity Flex 500 Index (FDFIX) is a mutual fund offered by Fidelity Investments. It is designed to replicate the performance of the Fidelity U.S. Large Cap IndexSM, which represents the investment results of U.S. large-capitalization stocks. The fund operates under a passive management strategy, aiming to mirror the index's composition and weighting. This approach seeks to provide investors with returns that closely match the index, before fees and expenses. The fund invests at least 80% of its assets in common stocks included in the Fidelity U.S. Large Cap IndexSM. The index is a float-adjusted market capitalization-weighted index, meaning that the weight of each stock in the index is determined by its market capitalization, adjusted for the number of shares available to the public. This weighting methodology ensures that the fund's portfolio reflects the relative importance of each company in the U.S. large-cap market. The fund is available to investors seeking broad market exposure to U.S. large-cap equities. Fidelity Investments, the fund's manager, is a well-established financial services company with a long history of providing investment products and services to individuals and institutions. The fund benefits from Fidelity's expertise in managing index funds and its extensive research capabilities. FDFIX offers a cost-effective and transparent way for investors to gain exposure to the U.S. large-cap equity market.
What Products and Services Does FDFIX Offer?
- Invests primarily in common stocks included in the Fidelity U.S. Large Cap IndexSM.
- Replicates the performance of the Fidelity U.S. Large Cap IndexSM.
- Utilizes a float-adjusted market capitalization-weighted approach.
- Provides investors with exposure to U.S. large-capitalization stocks.
- Offers a passively managed investment strategy.
- Aims to deliver returns that closely match the index's performance.
How Does FDFIX Make Money?
- Operates as a passively managed mutual fund.
- Generates revenue through management fees charged to investors.
- Tracks the performance of the Fidelity U.S. Large Cap IndexSM.
- Invests in a diversified portfolio of U.S. large-cap stocks.
What Industry Does FDFIX Operate In?
Fidelity Flex 500 Index (FDFIX) operates within the investment management industry, specifically in the segment of passively managed index funds. The industry is characterized by increasing demand for low-cost investment options and growing popularity of passive investment strategies. The competitive landscape includes other index funds and ETFs that track similar benchmarks. FDFIX competes with these funds based on its expense ratio, tracking error, and the reputation of its manager, Fidelity Investments. The fund's performance is closely tied to the overall performance of the U.S. large-cap equity market.
Who Are FDFIX's Key Customers?
- Individual investors seeking broad market exposure.
- Retirement plan participants.
- Financial advisors allocating client assets.
- Institutional investors seeking passive investment strategies.
How Fidelity Flex 500 Index Fund Is Valued
Relative to its peer group, FDFIX's quantitative score of 44/100 is roughly in line with the peer average of 46/100.
FDFIX Financials
Bull Case vs Bear Case
Bull Case
- Recent insider activity suggests confidence in the fund's management and strategy, indicating a positive outlook.
- Community sentiment has shifted favorably, with discussions highlighting the fund's diversified exposure to leading companies.
- Investors are increasingly recognizing the benefits of index funds in volatile markets, enhancing the fund's appeal.
- Market perception is leaning towards the resilience of the underlying index, especially in a recovering economy.
Bear Case
- Concerns over rising interest rates may affect the overall market, leading to cautious sentiment around index funds.
- Some community discussions reflect skepticism about the fund's performance compared to actively managed funds in the current environment.
- Recent economic indicators have raised questions about growth sustainability, contributing to bearish sentiment.
- There are fears of potential market corrections, which could negatively impact the fund's performance in the short term.
AI-generated arguments based on insider flow, news sentiment and technicals — not financial advice · March 2026
FDFIX Latest News
No recent news available for FDFIX.
FDFIX Analyst Consensus
Consensus Rating
Aggregated Buy/Hold/Sell recommendations from Benzinga, Yahoo Finance, and Finnhub for FDFIX.
Price Targets
Wall Street price target analysis for FDFIX.
FDFIX MoonshotScore
What does this score mean?
The MoonshotScore rates FDFIX 0-100 on quantitative fundamentals — growth, financial health, valuation, momentum, and risk.
Classification
Industry AFidelity Flex 500 Index Fund N/A Stock: Key Questions Answered
What does the AI Score mean for FDFIX?
FDFIX holds an AI Score of 44/100 (Grade: C). This is an educational research signal, not a buy or sell recommendation. Fidelity Flex 500 Index is a mutual fund that tracks the performance of the Fidelity U.S. Large Cap IndexSM, investing primarily in U.S. large-cap stocks. The fund aims to replicate the index's …
What does Fidelity Flex 500 Index do?
Fidelity Flex 500 Index (FDFIX) is a passively managed mutual fund designed to replicate the performance of the Fidelity U.S. Large Cap IndexSM. The fund invests at least 80% of its assets in the stocks that comprise the index, utilizing a float-adjusted, market capitalization-weighted approach.
What do analysts say about FDFIX stock?
As a passively managed index fund, FDFIX is not typically subject to individual stock analyst ratings. Instead, analysts focus on the overall performance of the U.S. large-cap equity market and the fund's ability to track its underlying index. Key valuation metrics to consider include the fund's expense ratio, tracking error, and the performance of the Fidelity U.S. Large Cap IndexSM.
What are the main risks for FDFIX?
The main risks for FDFIX are primarily related to market volatility and economic downturns. As a passively managed index fund, FDFIX's performance is directly tied to the performance of the Fidelity U.S. Large Cap IndexSM. A significant decline in the U.S. large-cap equity market would negatively impact the fund's returns.
What are the key factors to evaluate for FDFIX?
Fidelity Flex 500 Index Fund (FDFIX) holds an AI score of 44/100 (low). Not financial advice.
How frequently does FDFIX data refresh on this page?
FDFIX's price was last updated on Jul 12, 2026 and refreshes on page view during U.S. market hours — it is not a real-time exchange feed. Fundamentals update after quarterly filings; the MoonshotScore recalculates nightly; news aggregates continuously.
What has driven FDFIX's recent stock price performance?
Fidelity Flex 500 Index Fund (FDFIX) moves on earnings results, analyst revisions, sector rotation, and market sentiment. Notable catalyst: Low expense ratio. See the News tab for the latest drivers. Past performance does not predict future results.
Should investors consider FDFIX overvalued or undervalued right now?
Fidelity Flex 500 Index Fund (FDFIX) has no trailing P/E available here, so lean on price-to-sales and cash flow in the Financials tab. Compare P/E, P/S, and EV/EBITDA against sector peers for a full view.
How do I research FDFIX before investing?
Before investing in Fidelity Flex 500 Index Fund (FDFIX), research these four areas: (1) the company's revenue model and competitive position (see Company Overview), (2) financial health through revenue growth, margins, and cash flow (see MoonshotScore), (3) analyst consensus ratings and price targets (see Analyst tab), and (4) specific risk factors that could impact the stock (see Risk Factors section).
Disclaimer: This content is for informational purposes only and does not constitute investment advice. Always do your own research and consult a financial advisor.
Official Resources
Data provided for informational purposes only.
- The information provided is based on publicly available data and is intended for informational purposes only.
- Investment decisions should be made after consulting with a qualified financial advisor.