ATLASState Street SPDR S&P MidCap 400 ETF Trust (MDY): outlook, holdings and fees
State Street SPDR S&P MidCap 400 ETF Trust (MDY) is an exchange-traded fund and is managed by State Street Investment Management. The expense ratio is 0.24% and the yield is 1.04%. The ten largest holdings are 8% of the fund.
Fund data as of Oct 14, 2026 · Price Nov 2, 2026
ATLAS view on MDY
| Last price | $678.28 (+1.4%) |
|---|---|
| ATLAS chance of a higher price in 1 month | 55% |
| Likely 1-month range (50%) | $664.89 – $698.84 |
| Normal 1-day range (±1σ) | ±0.8% |
| Distribution yield | 1.04% |
ATLAS probabilities use the same calibrated model as every stock page. A fair value is shown for companies, not funds; the holdings below link to the fair value of each company.
MDY fund facts
| Issuer | State Street Investment Management |
|---|---|
| Theme | Other strategies |
| Assets under management | $25.8B |
| Expense ratio | 0.24% |
| Number of holdings | 50 |
| Portfolio turnover | 19% |
| Inception | May 4, 1995 |
| Exchange | NYSE |
The Trust seeks to achieve its investment objective by holding a portfolio of the common stocks that are included in the index (the "Portfolio"), with the weight of each stock in the Portfolio substantially corresponding to the weight of such stock in the index.
MDY top holdings
| Holding | Sector | Weight |
|---|---|---|
| Twilio Inc TWLO | Technology | 1.03% |
| Illumina Inc ILMN | Healthcare | 0.87% |
| TechnipFMC PLC FTI | Energy | 0.87% |
| Everpure, Inc. P | Technology | 0.83% |
| Okta Inc OKTA | Technology | 0.81% |
| Allegheny Technologies Incorporated ATI | Industrials | 0.77% |
| nVent Electric PLC NVT | Industrials | 0.66% |
| Carpenter Technology Corporation CRS | Industrials | 0.68% |
| US Foods Holding Corp USFD | Consumer Defensive | 0.63% |
| Tenet Healthcare Corporation THC | Healthcare | 0.66% |
Holdings with an ATLAS page link to their probability range, fair value and earnings calendar.
MDY sector breakdown
| Sector | Weight |
|---|---|
| Industrials | 21.3% |
| Technology | 17.5% |
| Financial Services | 13.7% |
| Healthcare | 11.1% |
| Consumer Cyclicals | 10.8% |
| Real Estate | 7.5% |
| Energy | 5.3% |
| Basic Materials | 5.1% |
| Consumer Defensive | 3.4% |
| Utilities | 2.7% |
| Communication Services | 1.6% |
By region: North America 98.3%, United Kingdom 1.1%, Europe Developed 0.3%, Asia Emerging 0.2%, Latin America 0.2%.
MDY returns and risk
| Year to date | +11.6% |
|---|---|
| 1 year | +13.4% |
| 3 years (annualised) | +15.7% |
| 5 years (annualised) | +7.5% |
| 10 years (annualised) | +10.9% |
| Volatility (3 years) | 15.8% |
| Sharpe ratio (3 years) | 0.63 |
Past returns do not guarantee future results.
MDY: frequently asked questions
What does MDY invest in?
State Street SPDR S&P MidCap 400 ETF Trust invests in a portfolio of securities. Its largest holdings are Twilio Inc (1.0%), Illumina Inc (0.9%), TechnipFMC PLC (0.9%), Everpure, Inc. (0.8%), Okta Inc (0.8%).
What is the MDY expense ratio?
0.24% a year: about $24.00 for every $10,000 invested.
What is the MDY dividend yield?
1.04%. ATLAS does not hold the exact distribution dates for ETFs.
Will MDY go up?
Nobody can know. The ATLAS model puts the chance of a higher price in one month at 55%, with a likely range (50%) of $664.89 to $698.84 from $678.28 today. It is a probability, not a prediction.
How has MDY performed?
Year to date +11.6%, one year +13.4%, three years +15.7% a year, five years +7.5% a year. Past returns do not guarantee future results.
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Educational information, not investment advice. Disclaimer