ATLASState Street SPDR S&P 400 Mid Cap Growth ETF (MDYG): outlook, holdings and fees
State Street SPDR S&P 400 Mid Cap Growth ETF (MDYG) is an exchange-traded fund and is managed by State Street Investment Management. The expense ratio is 0.14% and the yield is 0.69%. The ten largest holdings are 14% of the fund.
Fund data as of Oct 14, 2026 · Price Nov 2, 2026
ATLAS view on MDYG
| Last price | $104.26 (+1.3%) |
|---|---|
| ATLAS chance of a higher price in 1 month | 54% |
| Likely 1-month range (50%) | $101.58 – $107.98 |
| Normal 1-day range (±1σ) | ±1.0% |
| Distribution yield | 0.69% |
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.
MDYG fund facts
| Issuer | State Street Investment Management |
|---|---|
| Theme | US mid caps |
| Assets under management | $2.9B |
| Expense ratio | 0.14% |
| Number of holdings | 50 |
| Portfolio turnover | 52% |
| Inception | Nov 8, 2005 |
| Exchange | NYSE |
The fund generally invests substantially all, but at least 80%, of its total assets in the securities comprising the index. The index measures the performance of the mid-capitalization growth segment of the U.S. equity market.
MDYG top holdings
| Holding | Sector | Weight |
|---|---|---|
| Okta Inc OKTA | Technology | 2.11% |
| TechnipFMC PLC FTI | Energy | 1.56% |
| nVent Electric PLC NVT | Industrials | 1.56% |
| Allegheny Technologies Incorporated ATI | Industrials | 1.42% |
| United Therapeutics Corporation UTHR | Healthcare | 1.38% |
| MACOM Technology Solutions Holdings Inc MTSI | Technology | 1.31% |
| XPO Logistics Inc XPO | Industrials | 1.18% |
| Tenet Healthcare Corporation THC | Healthcare | 1.25% |
| Roku Inc ROKU | Communication Services | 1.16% |
| Royal Gold Inc RGLD | Basic Materials | 1.17% |
Holdings with an ATLAS page link to their probability range, fair value and earnings calendar.
MDYG sector breakdown
| Sector | Weight |
|---|---|
| Industrials | 26.0% |
| Technology | 24.2% |
| Healthcare | 15.5% |
| Financial Services | 7.4% |
| Consumer Cyclicals | 7.3% |
| Real Estate | 6.0% |
| Basic Materials | 4.4% |
| Energy | 3.2% |
| Communication Services | 2.4% |
| Consumer Defensive | 1.9% |
| Utilities | 1.8% |
By region: North America 97.1%, United Kingdom 2.2%, Latin America 0.3%, Europe Developed 0.3%, Asia Emerging 0.1%.
MDYG returns and risk
| Year to date | +16.1% |
|---|---|
| 1 year | +18.7% |
| 3 years (annualised) | +17.6% |
| 5 years (annualised) | +7.9% |
| 10 years (annualised) | +10.9% |
| Volatility (3 years) | 16.6% |
| Sharpe ratio (3 years) | 0.70 |
Past returns do not guarantee future results.
MDYG: frequently asked questions
What does MDYG invest in?
State Street SPDR S&P 400 Mid Cap Growth ETF invests in a portfolio of securities. Its largest holdings are Okta Inc (2.1%), TechnipFMC PLC (1.6%), nVent Electric PLC (1.6%), Allegheny Technologies Incorporated (1.4%), United Therapeutics Corporation (1.4%).
What is the MDYG expense ratio?
0.14% a year: about $14.00 for every $10,000 invested.
What is the MDYG dividend yield?
0.69%. ATLAS does not hold the exact distribution dates for ETFs.
Will MDYG go up?
Nobody can know. The ATLAS model puts the chance of a higher price in one month at 54%, with a likely range (50%) of $101.58 to $107.98 from $104.26 today. It is a probability, not a prediction.
How has MDYG performed?
Year to date +16.1%, one year +18.7%, three years +17.6% a year, five years +7.9% a year. Past returns do not guarantee future results.
Similar ETFs: US mid caps
- iShares Core S&P Mid-Cap ETF (IJH)
- Vanguard Mid-Cap Index Fund ETF Shares (VO)
- iShares Russell Mid-Cap ETF (IWR)
- Vanguard Morningstar Mid-Cap Value ETF (VOE)
- iShares Russell Mid-Cap Growth ETF (IWP)
- Vanguard Mid-Cap Growth ETF (VOT)
- State Street SPDR Portfolio S&P 400 Mid Cap ETF (SPMD)
- iShares Russell Mid-Cap Value ETF (IWS)
Educational information, not investment advice. Disclaimer