State Street SPDR S&P MidCap 400SM ETF Trust
U.S. stock fund
State Street SPDR S&P MidCap 400SM ETF Trust is U.S. equity fund.
What you own
| Company | Weight | Value | Shares | Reported price |
|---|---|---|---|---|
TWLOTWILIO INC | 0.86% | $240.95M | 1.2M | $206.33 |
0.84% | $235.82M | 382.3K | $616.84 | |
MKSIMKS INC | 0.82% | $231.16M | 519.7K | $444.80 |
0.77% | $215.38M | 284.2K | $757.76 | |
ENTGENTEGRIS INC | 0.75% | $211.04M | 1.2M | $179.86 |
NVENT ELECTRIC PLC | 0.75% | $211.04M | 1.2M | $169.61 |
ATIATI INC | 0.74% | $206.96M | 1.1M | $197.10 |
ILMNILLUMINA INC | 0.73% | $204.68M | 1.2M | $175.83 |
TECHNIPFMC PLC | 0.72% | $203.38M | 3.1M | $66.30 |
0.71% | $198.18M | 236.1K | $839.36 |
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 400 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 | 99.43% |
By sector
- Industrials
- 25.4%
- Information Technology
- 15.5%
- Financials
- 14.3%
- Consumer Discretionary
- 10.4%
- 8 other sectors
- 34.4%
- Industrials
- 25.4%
- Information Technology
- 15.5%
- Financials
- 14.3%
- Consumer Discretionary
- 10.4%
- Health Care
- 8.3%
- Real Estate
- 6.6%
- Materials
- 5.8%
- Energy
- 4.1%
- Consumer Staples
- 3.2%
- Utilities
- 3.1%
- International
- 1.9%
- Communication Services
- 1.5%
How it has done
C000000000 share class · total returns with dividends reinvested
Volatility over the last 12 months: 11.78%. Past returns are a record, not a forecast.
May 2026 and Jun 2026 have been filed since the trailing figures were struck, so they are 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 SPDR S&P MidCap 400SM ETF Trust is a U.S. equity fund. 18% of MDY’s stock holdings are in companies whose revenue grew in the top quartile of U.S. companies over the last five fiscal years (covering 93% of the fund’s equity).
- Asset class
- Equity
- Region
- United States
This fund files no prospectus profile. Unit investment trusts and closed-end funds register on forms that carry no objective or fee tagging, and some fund families file without it — a gap in what was filed, not a fund without an objective or without fees.
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.
8 new
8 exited
Understand how this fund fits with the rest.
Explore shared holdings, compare funds and follow their businesses with your connected AI:
- “Where do my funds overlap — MDY, QQQ and the fund in my 401(k)?”
- “How do this fund’s ten biggest holdings stack up against each other?”
- “For my target-date fund, what’s the real stock-and-bond mix once you look through it?”