Expense Ratio
The annual fee the ETF charges, deducted daily from NAV. A 0.05% ratio costs you $5/year per $10,000 invested, over 30 years that's the difference between a great fund and a mediocre one.
Learn more →State Street® SPDR® S&P 400™ Mid Cap Growth ETFMDYG$106.62+$0.86(+0.81%)as of 2026-10-02
Expense0.15%Net Assets$2.71BYTD+15.35%
State Street (SPDR)Equity
NAV
$106.62
Net Assets
$2.71B
Expense Ratio
0.15%
YTD
+15.35%
1Y
+15.88%
3Y CAGR
+16.54%
5Y CAGR
+6.86%
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.
Price History1,364 daily observations
Price History▲ 16.11% over 1Y
Monthly Returns
Year-to-Date ROI
Historical Volatility
Returns PerformanceTrailing total returns
| YTD | 1Y | 3Y CAGR | 5Y CAGR |
|---|---|---|---|
| +15.35% | +15.88% | +16.54% | +6.86% |
Expense Ratio
Net (after waivers)0.15%
Gross (before waivers)0.15%
Net expense ratio reflects fee waivers and reimbursements actually paid by investors. Gross is the full management cost.
AI Summary
us-etfStrengths1
- Expense ratio of 0.15% is below the Equity median of 0.35%
Concerns0
Rule-based from financial data. Not advice.
Sector Allocation10 sectors
Unclassified Equity70.30%
Industrials10.75%
Technology5.61%
Real Estate4.22%
Healthcare4.22%
Energy2.15%
Financial Services1.60%
Utilities0.40%
Consumer Cyclical0.40%
Basic Materials0.31%
Top 10 Holdings ConcentrationWhat share of the fund the largest 10 positions occupy
Top 10 Weight
14.7%
Total Holdings
242
Verdict
broadly diversified
Top Holdings200 of 242 loaded
💡Reading the Holdings Table
The Weight column shows how much of the ETF's assets sit in each constituent. The Allocation bar scales each weight to the largest position so you can see relative concentration at a glance, and the Cumul. column tracks the running total, a fast read on how top-heavy this ETF is. The top 10 holdings account for 14.7% of assets. Click any constituent name to open its US stock detail page.
📖 Learn: Diversification & Asset Allocation →| # | Holding | Sector | Allocation | Weight | Cumul. |
|---|---|---|---|---|---|
| 1 | FLEX LTDFLEX | Unclassified Equity | 1.89% | 1.9% | |
| 2 | TECHNIPFMC PLCFTI | Energy | 1.74% | 3.6% | |
| 3 | CURTISS WRIGHT CORPCW | Unclassified Equity | 1.51% | 5.1% | |
| 4 | XPO INCXPO | Industrials | 1.47% | 6.6% | |
| 5 | FABRINETFN | Unclassified Equity | 1.40% | 8.0% | |
| 6 | UNITED THERAPEUTICS CORPUTHR | Unclassified Equity | 1.40% | 9.4% | |
| 7 | MASTEC INCMTZ | Unclassified Equity | 1.35% | 10.8% | |
| 8 | EVERPURE INC AP | Unclassified Equity | 1.33% | 12.1% | |
| 9 | NVENT ELECTRIC PLCNVT | Unclassified Equity | 1.31% | 13.4% | |
| 10 | WOODWARD INCWWD | Unclassified Equity | 1.25% | 14.7% | |
| 11 | TWILIO INC ATWLO | Technology | 1.24% | 15.9% | |
| 12 | CARPENTER TECHNOLOGYCRS | Industrials | 1.22% | 17.1% | |
| 13 | ATI INCATI | Industrials | 1.19% | 18.3% | |
| 14 | BWX TECHNOLOGIES INCBWXT | Industrials | 1.16% | 19.5% | |
| 15 | RB GLOBAL INCRBA | Unclassified Equity | 1.14% | 20.6% | |
| 16 | ROYAL GOLD INCRGLD | Unclassified Equity | 1.14% | 21.7% | |
| 17 | API GROUP CORPAPG | Unclassified Equity | 1.08% | 22.8% | |
| 18 | RBC BEARINGS INCRBC | Unclassified Equity | 1.07% | 23.9% | |
| 19 | ITT INCITT | Unclassified Equity | 1.07% | 25.0% | |
| 20 | MACOM TECHNOLOGY SOLUTIONS HMTSI | Unclassified Equity | 1.03% | 26.0% | |
| Total (top 20) | 26.0% | ||||
Holdings Overlap with Your Portfolio
Checking for overlaps...
Investment CalculatorSee what investing in MDYG might be worth
$
You invest
$10,000
Estimated gain
$9,425
Final value
$19,425
Projections assume returns compound at the chosen CAGR consistently for 10 years, actual returns will vary year-to-year. Past performance is not a guarantee of future results.
Key Concepts to UnderstandFive things that drive ETF performance more than anything else
Net Assets (AUM)
Total money the ETF manages. Larger AUM usually means tighter bid-ask spreads and lower closure risk. ETFs under $50M are sometimes liquidated by the issuer.
Learn more →NAV
Net Asset Value, the per-share value of everything the ETF owns minus what it owes, calculated end-of-day. The trading price can drift slightly above (premium) or below (discount) NAV during the day.
Learn more →Tracking Error
How closely the ETF's returns match its benchmark. Index ETFs aim for near-zero tracking error; high tracking error in an index fund usually signals fees, sampling, or poor management.
Learn more →Total Return
Capital gain + reinvested dividends. The headline price chart only shows the price part, total return is what you actually pocket, and is the only fair way to compare ETFs across asset classes.
Learn more →Similar ETFs
About This ETF
Provider
State Street (SPDR)
Asset Class
Equity
Inception Date
Nov 8, 2005
Top Sector
Industrials (10.8%)
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.
US ETF data is for educational purposes only. Past performance does not guarantee future returns. Exchange-traded funds carry market risk and may lose value. Read the prospectus and consult a registered investment advisor before investing. Equiscale does not provide investment advice.