DCH vs MDY: Correlation
How closely do Dauch Corporation (DCH) and SPDR S&P MidCap 400 ETF (MDY) trade together? Their weekly returns over three years give a correlation of 0.61, which is strong.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are DCH and MDY?
Over the past 3 years, DCH and MDY moved with a correlation of 0.61, which is strong. Little has changed lately, as the 1-year reading of 0.61 lands near the 3-year figure. Over 5 years the correlation is 0.65, and the annualized covariance of weekly returns is 486.9 %².
By 3-year correlation, MDY places #4 of the 16 assets tracked against DCH. The trailing year gives MDY the advantage: +5.2% versus +18.3%, a 13.1-point spread. Note the risk asymmetry: DCH runs 2.9 times the annualized volatility of the other leg, so equal-weighting the two is not an equal-risk position.
How is this computed?
Pearson correlation on weekly returns: ρ(A,B) = cov(rA, rB) / (σA · σB), over windows of 52, 156 and 260 weeks. Covariance is annualized (×52) and expressed in %². Full definitions on the methodology page.
DCH vs MDY: side by side
| DCH (Dauch Corporation) | MDY (SPDR S&P MidCap 400 ETF) | |
|---|---|---|
| 1-year return | +5.2% | +18.3% |
| 5-year return | -28.5% | +47.5% |
| Volatility (ann.) | 48.5% | 16.5% |
| Beta vs S&P 500 | 1.58 | 0.91 |
| Max drawdown (3Y) | -65.3% | -24.0% |
| Market cap | $1.5B | – |
| P/E (trailing) | – | – |
| Dividend yield | 0.00% | 1.02% |
| Expense ratio | – | 0.23% |
| Assets under management | – | $26.5B |
| Sector / category | US Listed | ETF · US Small & Mid Cap |
MDY, State Street Investment Management's Mid-Cap Blend fund, carries $26.5B under management, 400 holdings, a 0.23% expense ratio, a 1.02% trailing dividend yield.
Year-by-year returns
| Year | DCH | MDY |
|---|---|---|
| 2022 | -16.2% | -13.3% |
| 2023 | +12.7% | +16.1% |
| 2024 | -33.8% | +13.6% |
| 2025 | +9.9% | +7.2% |
| 2026 | -1.4% | +16.4% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are DCH and MDY good diversifiers for each other?
To a limited degree. At 0.61 the two still catch most of the same waves, so the pair smooths returns a little without insulating either from a shared selloff.
FAQ
What is the correlation between DCH and MDY?
As of 2026-08-27, the correlation of weekly returns between DCH and MDY is 0.61 over 3 years, 0.61 over 1 year and 0.65 over 5 years.
Is MDY a good diversifier for DCH?
To a limited degree. At 0.61 the two still catch most of the same waves, so the pair smooths returns a little without insulating either from a shared selloff.
What does a correlation of 0.61 mean?
On the −1 to +1 scale, 0.61 describes how much the two returns move together: +1 is lockstep, 0 is independence, negative values mean opposite directions. It says nothing about which performed better.
Use this data
$ curl https://www.pairbook.io/api/v1/pairs/dch-vs-mdy.json
Embed this badge (it refreshes with the data), with attribution:
[](https://www.pairbook.io/pair/dch-vs-mdy/)
Free with attribution; caching and terms are described in the API documentation.
Related comparisons
Hubs: DCH correlations · MDY correlations
