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State Street SPDR S&P 400 Mid Cap Growth ETF

This ETF provides exposure to Mid Cap US Equities

MDYG performance and flow charts

Last update 9/18/2026 at 1:30 PM
Live
Closed
Last price
$104.94
-$0.07 (-0.07%) Yesterday

Performance

-6.0-5.0-4.0-3.0-2.0-1.00.0%Aug 18Aug 25Sep 1Sep 9Sep 16

Flows

0 M5 M10 M15 M20 M
1 day price range
$104.49
$105.35
52 week price range
$87.22
$113.63
1W perf
-1.32%
YTD perf
+13.86%
YTD flows
+$4M
AuM
$2.78B
E/R
0.15%
TTM yield
0.6%
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Historic performance and flows

Data as of September 18, 2026
1M3MYTD1Y3Y5Y
Perf.-5.72%-4.85%+13.86%+13.67%+51.74%+43.42%
Flows+$17M-$67M+$4M+$265K+$21M+$314M
Data as of September 18, 2026
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Daily, global ETF data for advanced analysis or integration into apps (API), from our partner Trackinsight.

Characteristics

The State Street SPDR S&P 400 Mid Cap Growth ETF is built to track the S&P MidCap 400 Growth Total Return Index - USD. This ETF provides physical exposure - by owning its shares you earn the return of the securities composing the index (as the ETF holds them directly). This share class generates a stream of income by distributing dividends.

Management strategyPassive
StrategyLong Only
ProviderState Street Investment Management
N° of holdings245
Replication methodDirect (Physical)
Asset classEquity
Dividend policyDistributing
Trailing 12m distribution yield
Join for free
Inception dateNovember 8, 2005
ESGNo
TrackinsightTrackinsight

More data and info about MDYG on Trackinsight

Exposure

Data as of July 31, 2026

Diversification

19.58%

Total weight of top 15 holdings out of 245

Top 15 Holdings

Twilio, Inc.
1.65%
TechnipFMC plc
1.57%
Curtiss-Wright Corp.
1.47%
Carpenter Technology Corp.
1.42%
ATI, Inc.
1.41%
nVent Electric Plc
1.37%
Everpure, Inc.
1.34%
Okta, Inc.
1.31%
XPO, Inc.
1.3%
United Therapeutics Corp.
1.21%
Tenet Healthcare Corp.
1.2%
Woodward, Inc.
1.18%
RB Global, Inc.
1.12%
Roku, Inc.
1.04%
Sterling Infrastructure, Inc.
1.01%

Sectors

Industrials
20.61%
Technology
19.17%
Healthcare
15.46%
Finance
14.43%
Non-Energy Materials
9.26%
Other
21.06%

Countries

USA
94.73%
Other
5.27%
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Trading data

Last sale
9/18/2026 at 1:30 PM
$104.94
Previous close
$105.01
Consolidated volume
09/17/2026
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Average volume
30 days
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Average discount or premium
30 days
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Average Bid/Ask spread
30 days
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Volatility and drawdown

3M1Y3Y5Y
Volatility+15.24%+17.66%+18.94%+20.76%
Max drawdown
-8.24%-9.91%-25.46%-29.25%
Max drawdown duration
32d45d379d834d
Time to recover
N/A18d246d623d

Replication quality

Data as of August 31, 2026
1-year trailing difference

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Tracking error
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Tracking difference
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1 year cumulative return difference
Best
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Worst
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daily return difference
Average
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Worst
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Frequently asked questions about MDYG

What type of ETF is MDYG?

MDYG is a Passive ETF that provides exposure to Equity assets. It is managed by State Street Investment Management.

What index does MDYG track?

MDYG tracks the S&P MidCap 400 Growth Total Return Index - USD, aiming to replicate its performance through full replication.

What does MDYG invest in?

This ETF provides exposure to Mid Cap US Equities. It is part of the segment: US Mid Cap Growth.

What is the expense ratio of MDYG?

The total expense ratio (TER) of MDYG is 0.15%, representing the annual fee charged by the fund manager.

When was MDYG launched?

MDYG was launched on November 8, 2005, marking its entry into the ETF market.

Who is the issuer of MDYG?

MDYG is issued by State Street Investment Management.

What is the AUM of MDYG?

As of September 18, 2026, MDYG manages $2.78 B, reflecting the total assets held in the fund.

How has MDYG performed recently?

As of September 18, 2026, MDYG delivered a return of -5.72% over the past month (1M performance), -4.85% over the past three months (3M), and 13.86% year-to-date (YTD).

What are the recent fund flows for MDYG?

As of September 18, 2026, MDYG has seen net flows of +$17M in the past month (1M flow) and +$4M year-to-date (YTD).

Does MDYG pay dividends?

As of September 18, 2026, MDYG has a trailing 12-month distribution yield of 0.6%.

How many holdings are in MDYG

As of July 31, 2026, MDYG holds 245 securities in its portfolio. This level of diversification can influence the fund’s risk profile and exposure to individual assets.

How diversified is MDYG?

As of July 31, 2026, MDYG holds 245 securities, with 19.58% of its assets concentrated in its top 15 holdings.

What are the top holdings of MDYG?

As of July 31, 2026, MDYG holds a portfolio of 245 underlyings, with its largest positions including Twilio, Inc., TechnipFMC plc and Curtiss-Wright Corp.. These top holdings play a significant role in shaping the fund’s performance and exposure.

What countries or regions does MDYG invest in?

As of July 31, 2026, MDYG has its largest geographic exposures in USA.

What sectors or themes does MDYG focus on?

As of July 31, 2026, MDYG is primarily exposed to Industrials, Technology and Healthcare.

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