MDYState Street® SPDR® S&P MIDCAP 400® ETF Trust
Small & Mid-Cap ETF · State Street (SPDR)
Holdings as of Aug 6, 2026
MDY is a Small & Mid-Cap ETF from State Street (SPDR) holding 399 positions as of Aug 6, 2026, with $27.1B in assets and a 0.23% net expense ratio. Its largest positions are ATI (0.8%), TWLO (0.8%) and ILMN (0.8%); the top 10 holdings account for 7.5% of the portfolio. By sector it leans Industrials (25.9%) and Financials (16.0%). It yields 0.99% on a trailing-12-month basis.
- Issuer
- State Street (SPDR)
- Holdings
- 399
- Net Assets
- $27.1BETF assets as of 2026-08-10
- Expense Ratio
- 0.23%per latest SEC prospectus filing
- TTM Yield
- 0.99%trailing 12-month distributions
Performance
- 1M
- +3.1%
- YTD
- +18.1%
- 1Y
- +25.6%
- 3Y (ann.)
- +14.2%
- 5Y (ann.)
- +8.8%
- 10Y (ann.)
- +10.9%
A $10,000 investment 10 years ago would be worth $28,241 today at the 10Y annualized rate. This is a backward-looking illustration, not a forecast. Project its future growth →
Total returns including dividends as of 2026-08-07. 3Y/5Y/10Y annualized. Past performance does not predict future results.
Sector Breakdown
| Industrials | 25.9% |
|---|---|
| Financials | 16.0% |
| Information Technology | 15.6% |
| Consumer Discretionary | 11.6% |
| Health Care | 10.3% |
| Other Sectors | 25.7% |
Top 25 Holdings
| # | Holding | Weight |
|---|---|---|
| 1 |  ATIATI Inc | 0.83% |
| 2 |  TWLOTwilio Inc. Class A | 0.80% |
| 3 |  ILMNIllumina Inc. | 0.80% |
| 4 |  FTITechnipFMC plc | 0.76% |
| 5 |  CRSCarpenter Technology Corporation | 0.76% |
| 6 |  PEverpure Inc. Class A | 0.75% |
| 7 |  NVTnVent Electric plc | 0.72% |
| 8 |  CWCurtiss-Wright Corporation | 0.72% |
| 9 |  FIVEFive Below Inc. | 0.68% |
| 10 |  AAAlcoa Corporation | 0.68% |
| 11 |  BJBJ's Wholesale Club Holdings Inc. | 0.67% |
| 12 |  SNSharkNinja Inc. | 0.67% |
| 13 |  SMTCSemtech Corporation | 0.67% |
| 14 |  FHNFirst Horizon Corporation | 0.67% |
| 15 |  DYDycom Industries Inc. | 0.67% |
| 16 |  EVREvercore Inc. Class A | 0.66% |
| 17 |  OKTAOkta Inc. Class A | 0.66% |
| 18 |  OCOwens Corning | 0.65% |
| 19 |  USFDUS Foods Holding Corp. | 0.64% |
| 20 |  BMRNBioMarin Pharmaceutical Inc. | 0.64% |
| 21 |  PINSPinterest Inc. Class A | 0.64% |
| 22 |  SCIService Corporation International | 0.64% |
| 23 |  BURLBurlington Stores Inc. | 0.64% |
| 24 |  LFUSLittelfuse Inc. | 0.64% |
| 25 |  MOG-AMoog Inc. Class A | 0.64% |
Showing the top 25 of 399 holdings. See the full MDY holdings list →
MDY alternatives
The closest Small & Mid-Cap ETFs to MDY by portfolio overlap — the share of weight both funds hold in the same securities.
| Fund | Overlap | Expense | Assets | |
|---|---|---|---|---|
 SPMDState Street® SPDR® Portfolio S&P 400™ Mid Cap ETF | 105% | 0.03%cheaper | $18.5B | Compare → |
 IVOOVanguard S&P Mid-cap 400 Index Fund | 91% | 0.07%cheaper | $3.9B | Compare → |
 IJHiShares Core S&P Mid-Cap ETF | 89% | 0.05%cheaper | $126.1B | Compare → |
 MDYGState Street® SPDR® S&P 400™ Mid Cap Growth ETF | 66% | 0.15%cheaper | $2.9B | Compare → |
 MDYVState Street® SPDR® S&P 400™ Mid Cap Value ETF | 65% | 0.15%cheaper | $2.9B | Compare → |
 IJKiShares S&P Mid-Cap 400 Growth ETF | 62% | 0.17%cheaper | $11.0B | Compare → |
 IJJiShares S&P Mid-Cap 400 Value ETF | 62% | 0.18%cheaper | $9.0B | Compare → |
 SCHMSchwab U.S. Mid-Cap ETF | 54% | 0.04%cheaper | $15.1B | Compare → |
Frequently Asked Questions
What is MDY's expense ratio?
MDY has a net expense ratio of 0.23%, per its latest SEC prospectus filing. That works out to about $23 a year on a $10,000 investment.
How many holdings does MDY have?
MDY held 399 positions as of Aug 6, 2026, per its latest official holdings data.
What are MDY's top 10 holdings?
MDY's largest positions are ATI (0.8%), TWLO (0.8%), ILMN (0.8%), FTI (0.8%), CRS (0.8%), P (0.8%), NVT (0.7%), CW (0.7%), FIVE (0.7%), AA (0.7%). Together they account for 7.5% of the portfolio.
What is MDY's dividend yield?
MDY yields 0.99% based on its trailing 12-month distributions, as of Aug 7, 2026.
How big is MDY?
MDY has $27.1B in assets as of Aug 10, 2026.
What are good alternatives to MDY?
By portfolio overlap, the closest Small & Mid-Cap ETFs to MDY are SPMD (105% overlap), IVOO (91% overlap), IJH (89% overlap). Overlap measures the share of portfolio weight both funds hold in the same securities.