MDYG

State Street SPDR S&P 400 Mid Cap Growth ETF

SPDR · $2.79bn in assets, October 8, 2026

MDYG, the State Street SPDR S&P 400 Mid Cap Growth ETF ($2.8 billion), sits in StoryVector’s Beta Book: it selects holdings by a factor such as value, size, quality or dividends, not by a story. It carries no market story, so it is not ranked against one. Over the past year it returned +16.9%, against +16.8% for broad US ETFs. Figures to October 2, 2026; past performance, not a recommendation.

MDYG · the ETFFRI OCT 2Market price total return
+10.1% a yearTotal return since launch, November 2005
+16.9%Last 12 months
+15.9%Year to date
21.8%Volatility since launch

Checked, and added to the Beta Book

It selects holdings by a factor such as value, size, quality or dividends, not by a story.

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Last checked
October 6, 2026

We check every ETF against the 22 narratives. This one follows the market, a factor or a manager’s choices rather than a story, so it has no narrative and no Share of Narrative. See the narratives on the board → · See the whole Beta Book →

FRI OCT 2MARKET PRICE TOTAL RETURN

1M3MYTD1Y3Y*5Y*
MDYG−0.2%−2.7%+15.9%+16.9%+17.0%+7.8%
The marketbroad US ETFs+0.8%+2.6%+14.6%+16.8%+22.9%+12.9%

1M, 3M, 1Y, 3Y, 5Y: one month to five years. YTD: year to date. * A year, annualised. A dash means the ETF has not traded for the whole period. Since it started trading on November 15, 2005: +10.1% a year.

$10,000 invested October 31, 2016

MDYG $29,099The market $42,209
$10,000$20,000$30,000$40,000$50,000Oct 2016Oct 2018Oct 2020Oct 2022Oct 2024$10,000$20,000$30,000$40,000$50,000Oct 2016Oct 2020Oct 2024

Year by year

MDYGThe market
-20%0%20%40%MDYG 2019: +26.1%The market 2019: +31.3%2019MDYG 2020: +22.6%The market 2020: +21.4%2020MDYG 2021: +18.5%The market 2021: +27.1%2021MDYG 2022: -18.9%The market 2022: -19.8%2022MDYG 2023: +17.3%The market 2023: +27.9%2023MDYG 2024: +15.8%The market 2024: +23.1%2024MDYG 2025: +7.2%The market 2025: +16.8%2025MDYG YTD: +15.9%The market YTD: +14.6%YTD-20%0%20%40%MDYG 2019: +26.1%The market 2019: +31.3%2019MDYG 2020: +22.6%The market 2020: +21.4%2020MDYG 2021: +18.5%The market 2021: +27.1%2021MDYG 2022: -18.9%The market 2022: -19.8%2022MDYG 2023: +17.3%The market 2023: +27.9%2023MDYG 2024: +15.8%The market 2024: +23.1%2024MDYG 2025: +7.2%The market 2025: +16.8%2025MDYG YTD: +15.9%The market YTD: +14.6%YTD

Total return in each calendar year; this year is year to date. A year appears only if MDYG traded for all of it.

Total return on the market price, with each distribution reinvested on its ex-date. Not the NAV return the issuer publishes; the two differ when the ETF trades above or below the value of its holdings. The market is the asset-weighted return of broad US index ETFs. Past performance is no guarantee of future results.

Common questions

Why does MDYG have no story?

It selects holdings by a factor such as value, size, quality or dividends, not by a story.

How has MDYG performed?

MDYG returned +16.9% over the past year, against +16.8% for broad US ETFs, to October 2, 2026. Past performance only.

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Narrative figures are from the weekly board. Performance is market price total return as of October 2, 2026. Assets are StoryVector’s weekly figure. Classification and measurement. Not investment advice. How the measurement works →