State Street SPDR S&P MIDCAP 400 ETF Trust (MDY) Fund Overview
Educational signal · not a buy or sell recommendation · How to read this
Beta 1.04: the stock has moved about 4% more than the S&P 500.
For informational purposes only. Not financial advice. Machine-generated analysis by Stock Expert AI — model gemini-2.5-flash, generated Jun 15, 2026. Editorial oversight is systemic, not page-by-page. Editorially accountable: Sedat ANAK, Founder and Editor-in-Chief. Data sources: Financial Modeling Prep, Yahoo Finance, SEC EDGAR
Quick AnswerState Street SPDR S&P MIDCAP 400 ETF Trust (MDY) trades at $669.66. The State Street SPDR S&P MidCap 400 ETF Trust (MDY) is an exchange-traded fund designed to track the performance of the S&P MidCap 400 Index. Sector: Financials.
Price as of · Last analyzed: Jun 15, 2026Analyst Coverage for MDY: MDY does not currently have published analyst price targets in our coverage universe. This is common for smaller-cap names with limited Wall Street coverage.
State Street SPDR S&P MIDCAP 400 ETF Trust (MDY) Financial Services Profile
The State Street SPDR S&P MidCap 400 ETF Trust (MDY) offers investors exposure to the performance of approximately 400 U.S. mid-sized companies. As an exchange-traded fund, it aims to replicate the capital appreciation and dividend income of the S&P MidCap 400 Index, providing diversified access to a key segment of the domestic equity market.
What Is the Investment Thesis for MDY?
The State Street SPDR S&P MidCap 400 ETF Trust (MDY) presents a mechanism for investors to gain diversified exposure to the U.S. mid-capitalization equity market. With a substantial market capitalization of $26.67 billion, MDY tracks the S&P MidCap 400 Index, which comprises approximately 400 mid-sized U.S. companies. This broad diversification across numerous holdings and various sectors helps mitigate company-specific risk. The fund's beta of 1.04 indicates that it has historically exhibited slightly higher volatility than the broader market, which is characteristic of the mid-cap segment. Growth catalysts for MDY are intrinsically linked to the performance of its underlying index and the broader economic environment, particularly periods of robust economic expansion where mid-cap companies often demonstrate strong earnings growth. Value drivers include its low-cost structure typical of passive ETFs and its ability to provide efficient access to a market segment that can offer a balance of growth potential and relative stability. However, investors should note the fund's susceptibility to economic downturns, as mid-cap companies can be more sensitive to economic fluctuations than their large-cap counterparts.
Based on FMP financials and quantitative analysis
MDY Key Highlights
Market Capitalization: $26.67 billion, reflecting significant assets under management for broad market exposure.
- Beta: 1.04, indicating slightly higher volatility compared to the overall market, typical for mid-cap equities.
- Dividend Yield: None, as the fund's primary objective is capital appreciation and dividend income is reinvested or passed through without a fixed yield.
- Diversification: Holds approximately 400 U.S. mid-sized companies, significantly reducing single-stock risk.
- Index Tracking: Designed to mirror the performance of the S&P MidCap 400 Index, providing transparent and consistent investment objectives.
Who Are MDY's Competitors?
MDY is benchmarked below against 8 industry peers on price, market cap, and our AI MoonshotScore.
| Company | Price | Change | Market Cap | MoonshotScore |
|---|---|---|---|---|
| DYNF iShares U.S. Equity Factor Rotation Active ETF | $69.97 | +0.69% | $40.1B | — |
| CGDV Capital Group Dividend Value ETF | $49.20 | +0.74% | $36.9B | — |
| ACWI iShares MSCI ACWI ETF | $160.09 | +0.85% | $33.6B | — |
| XLI State Street Industrial Select Sector SPDR ETF | $169.95 | +0.78% | $31.1B | — |
| IDEV iShares Core MSCI International Developed Markets ETF | $89.58 | +1.03% | $30.2B | — |
| APO Apollo Global Management, Inc. | $114.02 | -0.28% | $65.7B | 54 5-pillar |
| ALTI AlTi Global, Inc. | $2.91 | -2.35% | $432M | — |
| GROW U.S. Global Investors, Inc. | $2.86 | -0.35% | $36.3M | 58 5-pillar |
AI Score by Stock Expert AI · Price data: FMP / Yahoo Finance
What Are MDY's Key Strengths?
Diversification across approximately 400 mid-sized U.S. companies, reducing single-stock risk.
- Low expense ratio inherent to passive index-tracking ETFs, making it cost-efficient for investors.
- High liquidity due to its ETF structure and significant assets under management ($26.67B).
- Strong brand recognition and distribution network of State Street Global Advisors.
What Are MDY's Weaknesses?
Performance is strictly tied to the S&P MidCap 400 Index, limiting potential for outperformance.
- Mid-cap companies can be more susceptible to economic downturns than large-cap stocks.
- No active management to adapt to changing market conditions or avoid underperforming sectors/companies.
- Does not offer a fixed dividend yield, which may not appeal to income-focused investors.
What Are the Key Risks for MDY?
**Economic Downturns:** Mid-cap companies, while often more resilient than small-caps, can be more susceptible to economic recessions or significant slowdowns than large-cap firms. A weakening economic climate could lead to reduced corporate earnings and declining stock prices for MDY's holdings.
- **Market Volatility:** As an equity ETF with a beta of 1.04, MDY is subject to general stock market volatility. Significant market corrections or bear markets would directly impact the fund's net asset value, reflecting the performance of its underlying mid-cap constituents.
- **Index Concentration Risk:** Although diversified across 400 companies, the fund's performance is entirely dependent on the S&P MidCap 400 Index. Any adverse factors affecting a significant portion of the index's constituents or the mid-cap segment as a whole could negatively impact MDY.
- **Tracking Error:** While MDY aims to closely replicate the S&P MidCap 400 Index, there is always a potential for tracking error due to factors like fund expenses, cash drag, or difficulties in fully replicating the index, which could lead to slight underperformance relative to the index.
What Threats Does MDY Face?
- Significant economic downturns or recessions disproportionately impacting mid-cap companies.
- Increased competition from new or existing ETFs tracking similar mid-cap indices with potentially lower fees.
- Shifts in investor sentiment away from mid-cap equities towards large-cap or small-cap segments.
- Regulatory changes impacting the ETF industry or specific index methodologies.
What Are MDY's Competitive Advantages?
- **Brand Recognition and Trust:** State Street Global Advisors is a well-established and respected name in the ETF industry, lending credibility and trust to MDY.
- **First-Mover Advantage/Scale:** As one of the earliest and largest ETFs tracking the S&P MidCap 400, MDY benefits from significant assets under management ($26.67B), which can lead to lower operating costs per unit and tighter bid-ask spreads.
- **Index Replication Efficiency:** The fund's passive strategy and deep experience in index tracking allow for highly efficient replication of the S&P MidCap 400 Index, minimizing tracking error.
- **Liquidity:** High trading volumes and large AUM contribute to superior liquidity, making it easier and cheaper for investors to enter and exit positions.
- **Diversification:** Its broad diversification across ~400 holdings inherently reduces company-specific risk, a key attraction for risk-averse investors.
What Does MDY Do?
The State Street SPDR S&P MidCap 400 ETF Trust (MDY) is an exchange-traded fund (ETF) managed by State Street Global Advisors, one of the world's largest asset managers and a pioneer in the ETF industry. Launched to provide investors with efficient access to the mid-capitalization segment of the U.S. equity market, MDY's primary objective is to deliver investment results that, before fees and expenses, generally correspond to the total return performance of the S&P MidCap 400 Index. This index is designed to measure the performance of the mid-capitalization sector of the U.S. equity market, typically comprising companies with market capitalizations between $2.4 billion and $8.2 billion, though these ranges can fluctuate. The fund achieves its objective by holding a diversified portfolio of stocks that are included in the S&P MidCap 400 Index, aiming to replicate the index's composition and weighting. This passive investment strategy means the fund does not attempt to outperform the index but rather to mirror its performance. Investors utilize MDY to gain exposure to a segment of the market that historically has offered a balance between the growth potential often associated with small-cap companies and the relative stability of large-cap firms. The fund's structure as an ETF provides liquidity, transparency, and cost-efficiency, making it a popular choice for both institutional and individual investors seeking broad, diversified exposure to U.S. mid-cap equities. Its headquarters are located in Boston, US, reflecting its deep roots within the American financial landscape.
What Products and Services Does MDY Offer?
- Tracks the performance of the S&P MidCap 400 Index.
- Invests in a diversified portfolio of approximately 400 mid-sized U.S. companies.
- Aims to reflect both capital appreciation and dividend income of the underlying index.
- Provides efficient, low-cost exposure to the U.S. mid-capitalization equity market.
- Operates as a passively managed exchange-traded fund (ETF).
- Offers intraday liquidity, allowing shares to be bought and sold throughout the trading day.
- Managed by State Street Global Advisors, a leading global asset manager.
How Does MDY Make Money?
- Generates revenue through an expense ratio charged to investors as a percentage of assets under management (AUM).
- Employs a passive investment strategy, aiming to replicate the performance of the S&P MidCap 400 Index.
- Benefits from economies of scale as AUM grows, leading to potentially higher profitability for the fund manager.
- Provides a transparent and regulated investment product listed on a major stock exchange.
What Industry Does MDY Operate In?
The State Street SPDR S&P MidCap 400 ETF Trust operates within the highly competitive global asset management industry, specifically targeting the exchange-traded fund (ETF) segment. The ETF market has experienced significant growth, driven by investor demand for low-cost, transparent, and liquid investment vehicles. MDY is positioned within the U.S. equity ETF landscape, focusing on the mid-capitalization segment. This segment is often viewed as a 'sweet spot' by investors, offering greater growth potential than large-cap stocks while exhibiting less volatility than small-cap stocks. The broader trend in asset management points towards continued inflows into passive investment strategies, such as index-tracking ETFs, due to their cost-effectiveness and generally strong performance relative to actively managed funds. MDY competes with other index funds and ETFs that track mid-cap indices, as well as actively managed mutual funds and ETFs seeking to outperform this market segment. Its affiliation with State Street Global Advisors provides a strong brand presence and distribution network.
Who Are MDY's Key Customers?
- Individual retail investors seeking diversified mid-cap exposure.
- Financial advisors and wealth managers constructing client portfolios.
- Institutional investors, including pension funds and endowments, for strategic asset allocation.
- Day traders and short-term investors utilizing its intraday liquidity.
- Investors looking for a cost-effective way to access the U.S. mid-cap equity market.
Research confidence
Thin evidence — scoring coverage unknown. Treat this as a starting point, not a conclusion.
- ● Scoring coverage unknown
- ● Price is current
- ● No filing on record
- ● No analyst coverage
- ● This is an etf, not an operating company
MoonshotScore History
Recorded daily since 2026-08-23 · 41 snapshots
| 2026-08-23 | 47 |
| 2026-08-31 | 47 |
| 2026-09-08 | 47 |
| 2026-09-16 | 47 |
| 2026-09-24 | 47 |
| 2026-10-04 | 47 |
What changed?
The score has stayed at 47.
Over the same 30 days the stock moved -3.0%.
MDY Financials
Bull Case vs Bear Case
Bull Case
- Diversification across approximately 400 mid-sized U.S. companies, reducing single-stock risk.
- Low expense ratio inherent to passive index-tracking ETFs, making it cost-efficient for investors.
- High liquidity due to its ETF structure and significant assets under management ($26.67B).
- Strong brand recognition and distribution network of State Street Global Advisors.
Bear Case
- Performance is strictly tied to the S&P MidCap 400 Index, limiting potential for outperformance.
- Mid-cap companies can be more susceptible to economic downturns than large-cap stocks.
- No active management to adapt to changing market conditions or avoid underperforming sectors/companies.
- Does not offer a fixed dividend yield, which may not appeal to income-focused investors.
AI-generated arguments based on insider flow, news sentiment and technicals — not financial advice · June 2026
MDY Latest News
-
Should State Street SPDR S&P MIDCAP 400 ETF Trust (MDY) Be on Your Investing Radar?
zacks.com · Aug 31, 2026
-
Blue Edge Capital LLC Reduces Stake in SPDR S&P MidCap 400 ETF Trust $MDY
defenseworld.net · Aug 28, 2026
MDY Analyst Consensus
Consensus Rating
Aggregated Buy/Hold/Sell recommendations collected by Financial Modeling Prep for MDY.
Price Targets
Wall Street price target analysis for MDY.
MDY MoonshotScore
MoonshotScore is Stock Expert AI's proprietary 0-100 research rating, not a buy or sell recommendation. No MoonshotScore is published for MDY; grades run from A+ (80-100) to F (below 30).
MDY Financials Stock FAQ
How does MDY provide diversification within an investment portfolio?
MDY provides significant diversification by investing in a basket of approximately 400 mid-sized U.S. companies that constitute the S&P MidCap 400 Index.
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
MoonshotScore is not published for this security.
Data provided for informational purposes only.
- All information is derived directly from the provided source data and general knowledge about ETF structures and market segments.
- The absence of specific historical performance data or detailed expense ratios in the source limits the depth of financial metric analysis beyond market cap and beta.
- The FAQ regarding analyst consensus was omitted due to the lack of relevant data in the provided source, as per instructions.