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MDYG · ARCA · ETF

State Street SPDR S&P 400 Mid Cap Growth ETF (MDYG) Price, Holdings & Fees

$498.35−0.34%−$1.70End-of-day price as of Oct 9, 2026

State Street SPDR S&P 400 Mid Cap Growth ETF (MDYG) closed at $498.35 on Oct 9, 2026, down 0.34% from the previous close of $500.05.

Share price, past year

1Y +17.85%

52-week range $406.13 – $521.45. Daily closing prices.
Monthly closing prices
Last closing price of each month
DateClose
Oct 9, 2026$498.35
Sep 30, 2026$492.75
Aug 31, 2026$477.07
Jul 31, 2026$474.84
Jun 30, 2026$471.26
May 29, 2026$477.75
Apr 30, 2026$429.80
Mar 31, 2026$417.59
Feb 27, 2026$437.08
Jan 30, 2026$428.81
Dec 31, 2025$431.72
Nov 28, 2025$419.09
Oct 31, 2025$420.60

Key statistics

Expense ratio
0.15%
as of Jun 30, 2025
Net assets
$2.9B
as of Jun 30, 2026
Holdings
246
as of Jun 30, 2026
52-week range
$406.13 – $521.45

State Street SPDR S&P 400 Mid Cap Growth ETF's expense ratio is 0.15%: $15.00 a year on $10,000 invested.

Holdings

State Street SPDR S&P 400 Mid Cap Growth ETF held 246 investments worth $2.92B as of Jun 30, 2026. Its largest holding was State Street Global Advisors, at 3.43% of the fund.

State Street SPDR S&P 400 Mid Cap Growth ETF largest holdings by share of net assets
#Holding% of fundValue
1State Street Global Advisors3.43%$100.36M
2Twilio Inc1.66%$48.49M
3Carpenter Technology Corp1.62%$47.47M
4Curtiss-Wright Corp1.48%$43.35M
5nVent Electric PLC1.45%$42.48M
6ATI Inc1.42%$41.60M
7TechnipFMC PLC1.40%$40.94M
8Sterling Infrastructure Inc1.36%$39.88M
9MasTec Inc1.36%$39.65M
10Woodward Inc1.34%$39.26M
11MACOM Technology Solutions Holdings Inc1.32%$38.60M
12Everpure Inc1.32%$38.51M
13XPO Inc1.28%$37.28M
14United Therapeutics Corp1.22%$35.62M
15Okta Inc1.21%$35.38M
16RB Global Inc1.15%$33.55M
17MKS Inc1.13%$33.07M
18RBC Bearings Inc1.08%$31.47M
19Fabrinet1.07%$31.15M
20TTM Technologies Inc1.03%$30.04M
21Roku Inc0.96%$28.08M
22BWX Technologies Inc0.94%$27.58M
23ITT Inc0.94%$27.34M
24Talen Energy Corp0.92%$27.02M
25Neurocrine Biosciences Inc0.90%$26.20M

Top 25 of 246 holdings, as of Jun 30, 2026. Percentages are of the fund's net assets.

What the fund owns

State Street SPDR S&P 400 Mid Cap Growth ETF holdings by asset type
Asset type% of fund
Stocks99.88%
Cash and short-term investments3.52%
State Street SPDR S&P 400 Mid Cap Growth ETF holdings by country, largest 7
Country% of fund
United States95.61%
Ireland2.38%
United Kingdom1.64%
Bermuda1.35%
Canada1.29%
Cayman Islands1.07%
British Virgin Islands0.06%

Shares of net assets from the fund's N-PORT report. Funds that borrow can add up to more than 100%, with borrowing (such as repurchase agreements) shown as a negative share.

Monthly total returns

Over the 3 months to Jun 30, 2026, State Street SPDR S&P 400 Mid Cap Growth ETF's total return was +16.93%, as reported to the SEC.

State Street SPDR S&P 400 Mid Cap Growth ETF monthly total returns
MonthTotal return
Jun 30, 2026+3.10%
May 31, 2026+4.92%
Apr 30, 2026+8.10%

The fund's own total returns as reported to the SEC (N-PORT), including reinvested distributions. Not the sample prices above.

Fund profile

Name
State Street SPDR S&P 400 Mid Cap Growth ETF
Ticker
MDYG
Exchange
ARCA
Fund type
ETF
Trust
SPDR SERIES TRUST
SEC series ID
S000006987
SEC CIK
0001064642
Fractional shares
Yes

Recent SEC filings

Shareholder reports and prospectuses are filed by SPDR SERIES TRUST, the trust behind State Street SPDR S&P 400 Mid Cap Growth ETF, and cover all of its funds.

Frequently asked questions

What is MDYG's price?

State Street SPDR S&P 400 Mid Cap Growth ETF (MDYG) closed at $498.35 on Oct 9, 2026, down 0.34% from the previous close of $500.05.

What is MDYG's expense ratio?

State Street SPDR S&P 400 Mid Cap Growth ETF's expense ratio is 0.15%: $15.00 a year on $10,000 invested.

What does MDYG hold?

State Street SPDR S&P 400 Mid Cap Growth ETF held 246 investments worth $2.92B as of Jun 30, 2026. Its largest holding was State Street Global Advisors, at 3.43% of the fund. Its five largest holdings were State Street Global Advisors, Twilio Inc, Carpenter Technology Corp, Curtiss-Wright Corp, nVent Electric PLC.

How has MDYG performed?

Over the 3 months to Jun 30, 2026, State Street SPDR S&P 400 Mid Cap Growth ETF's total return was +16.93%, as reported to the SEC.

Sources and methodology

Holdings, net assets and monthly returns come from the fund's N-PORT filing with the SEC, as of Jun 30, 2026 (filed Aug 28, 2026). The expense ratio is from the fund's prospectus or shareholder report, as of Jun 30, 2025. Prices are generated sample data for development. Data sources and disclosures