LTH vs MDY: Correlation
How closely do Life Time Group Holdings, Inc. (LTH) and SPDR S&P MidCap 400 ETF (MDY) trade together? Their weekly returns over three years give a correlation of 0.46, which is moderate.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are LTH and MDY?
On 3 years of weekly data the LTH/MDY correlation comes out at 0.46, moderate. The past 12 months show a weaker link (0.35) than the 3-year average (0.46). The 5-year figure is 0.55, and annualized covariance runs at 291.1 %².
MDY is one of the assets that tracks LTH most closely: it ranks #3 out of the 11 assets we track against LTH. Correlation aside, the last 12 months split them widely, with LTH ahead by 40.4 points (+58.7% versus +18.3%). One caveat on sizing: LTH is 2.3 times as volatile as the other leg, so an equal-dollar split is far from equal-risk.
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.
LTH vs MDY: side by side
| LTH (Life Time Group Holdings, Inc.) | MDY (SPDR S&P MidCap 400 ETF) | |
|---|---|---|
| 1-year return | +58.7% | +18.3% |
| 5-year return | +149.9% | +47.5% |
| Volatility (ann.) | 38.2% | 16.5% |
| Beta vs S&P 500 | 1.07 | 0.91 |
| Max drawdown (3Y) | -34.5% | -24.0% |
| Market cap | $9.9B | – |
| P/E (trailing) | 24.5 | – |
| 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 | LTH | MDY |
|---|---|---|
| 2022 | -30.5% | -13.3% |
| 2023 | +26.1% | +16.1% |
| 2024 | +46.7% | +13.6% |
| 2025 | +20.2% | +7.2% |
| 2026 | +66.9% | +16.4% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are LTH and MDY good diversifiers for each other?
Reasonably. At 0.46, LTH and MDY keep a meaningful degree of independence, and combining them has historically reduced portfolio volatility.
FAQ
What is the correlation between LTH and MDY?
The LTH/MDY correlation stands at 0.46 on a 3-year window (1 year: 0.35, 5 years: 0.55), computed from weekly returns as of 2026-08-27.
Is MDY a good diversifier for LTH?
Reasonably. At 0.46, LTH and MDY keep a meaningful degree of independence, and combining them has historically reduced portfolio volatility.
What does a correlation of 0.46 mean?
On the −1 to +1 scale, 0.46 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.
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Related comparisons
Hubs: LTH correlations · MDY correlations
