State Street(R) SPDR(R) S & P 400(TM) Mid Cap Growth ETF
U.S. stock index ETF · tracks S&P MidCap 400 Growth Index
As of its 2026 Q2 report, State Street(R) SPDR(R) S & P 400(TM) Mid Cap Growth ETF held 244 positions with $2.92B in net assets. Its ten largest holdings made up 16.6% of the fund. The MDYG share class costs 0.15% a year. Over the 12 months to May 2026, MDYG returned 30.2%, with dividends reinvested. In 2026 Q2 it added 6 new positions and exited 5.
The State Street SPDR S&P 400 Mid Cap Growth ETF (the Fund) seeks to provide investment results that, before fees and expenses, correspond generally to the total return performance of an index that tracks the performance of medium capitalization exchange traded U.S. equity securities exhibiting growth characteristics.
The fund tracks the S&P MidCap 400 Growth Index, which selects mid-cap U.S. stocks exhibiting the strongest growth characteristics based on sales growth, earnings momentum, and price momentum, then weights them by market capitalization. The fund employs a sampling strategy and may hold a subset of index securities or substantially all of them, depending on asset size and market conditions. Because the fund samples rather than holds all index constituents, its returns may diverge from the index.
What you own
| Company | Weight | Value | Shares | Reported price |
|---|---|---|---|---|
GVMXXState Street Global Advisors | 3.52% | $102.94M | — | — |
TWLOTwilio Inc | 1.66% | $48.49M | 235.0K | $206.33 |
1.62% | $47.47M | 77.0K | $616.84 | |
1.48% | $43.35M | 57.2K | $757.76 | |
nVent Electric PLC | 1.45% | $42.48M | 250.5K | $169.61 |
ATIATI Inc | 1.42% | $41.60M | 211.0K | $197.10 |
TechnipFMC PLC | 1.40% | $40.94M | 617.5K | $66.30 |
1.36% | $39.88M | 47.5K | $839.36 | |
MTZMasTec Inc | 1.36% | $39.65M | 95.3K | $416.06 |
WWDWoodward Inc | 1.34% | $39.26M | 92.3K | $425.44 |
Reported price is the fund's own reported value divided by its own reported shares at 2026-06-30 — not a live quote, and not what the fund paid.
The 200 largest of 244 holdings, with the share counts as filed, open with a free account.
What the fund is made of
Percentages are of fund net assets. Rounding, liabilities and short positions can make totals differ from 100%.
| Stocks | 99.88% |
| Cash & short-term | 3.52% |
By sector
- Industrials
- 29.9%
- Information Technology
- 20.8%
- Health Care
- 12.4%
- Consumer Discretionary
- 8.3%
- 9 other sectors
- 28.6%
- Industrials
- 29.9%
- Information Technology
- 20.8%
- Health Care
- 12.4%
- Consumer Discretionary
- 8.3%
- Financials
- 6.4%
- Real Estate
- 5.0%
- Materials
- 3.7%
- Cash
- 3.4%
- International
- 2.5%
- Energy
- 2.3%
- Communication Services
- 2.1%
- Utilities
- 2.0%
- Consumer Staples
- 1.2%
How it has done
MDYG share class · total returns with dividends reinvested
Volatility over the last 12 months: 11.97%. Past returns are a record, not a forecast.
Jun 2026 has been filed since the trailing figures were struck, so it is not in the table above or the curve — every figure here shares one cut-off, which is what makes them comparable with other funds.
Fees & fund details
State Street(R) SPDR(R) S & P 400(TM) Mid Cap Growth ETF is a U.S. equity index ETF that tracks the S&P MidCap 400 Growth Index. 24% of MDYG’s stock holdings are in companies whose revenue grew in the top quartile of U.S. companies over the last five fiscal years (covering 92% of the fund’s equity).
- Asset class
- Equity
- Region
- United States
- Management
- Index (passive)
- Fund type
- ETF
- Expense ratio, by class
- 0.15%· MDYG 0.15%
- Portfolio turnover
- 41.00% a year · as of 2025 Q4
Turnover is how much of the portfolio was replaced in a year.
Classified from what the fund holds, not from its name · 2026 Q2. The summary is a paraphrase of the prospectus; the objective is verbatim.
What changed this quarter
Positions that entered or left the fund since its previous filing. Positions that were only resized are not listed.
6 new
5 exited
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