MEDP vs SPY: Correlation
Medpace Holdings, Inc. (MEDP) and SPDR S&P 500 ETF Trust (SPY) show a moderate relationship: their 3-year correlation of weekly returns is 0.32.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are MEDP and SPY?
Across a 3-year window, the weekly returns of MEDP and SPY correlate at 0.32, moderate. The link has loosened recently: the 1-year correlation (0.17) runs below the 3-year figure (0.32). Stretching to 5 years gives 0.47, with an annualized covariance of 217.5 %².
Within MEDP's tracked universe of 15 assets, SPY comes in at #9 by 3-year correlation. On 12-month performance MEDP holds a 8.6-point edge, +29.2% against +20.6%. Risk is not evenly split, since MEDP carries 3.2 times the volatility of the other side.
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.
MEDP vs SPY: side by side
| MEDP (Medpace Holdings, Inc.) | SPY (SPDR S&P 500 ETF Trust) | |
|---|---|---|
| 1-year return | +29.2% | +20.6% |
| 5-year return | +231.5% | +82.4% |
| Volatility (ann.) | 46.4% | 14.5% |
| Beta vs S&P 500 | 1.04 | 1.00 |
| Max drawdown (3Y) | -39.4% | -18.8% |
| Market cap | $17.1B | – |
| P/E (trailing) | 36.4 | – |
| Dividend yield | 0.00% | 1.01% |
| Expense ratio | – | 0.09% |
| Assets under management | – | $795.3B |
| Sector / category | US Listed | ETF · US Large Cap |
SPY is a Large Blend fund from State Street Investment Management: $795.3B under management, 504 holdings, a 0.09% expense ratio, a 1.01% trailing dividend yield.
Year-by-year returns
| Year | MEDP | SPY |
|---|---|---|
| 2022 | -2.4% | -18.2% |
| 2023 | +44.3% | +26.2% |
| 2024 | +8.4% | +24.9% |
| 2025 | +69.1% | +17.7% |
| 2026 | +8.9% | +13.7% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are MEDP and SPY good diversifiers for each other?
Reasonably. At 0.32, MEDP and SPY keep a meaningful degree of independence, and combining them has historically reduced portfolio volatility.
FAQ
What is the correlation between MEDP and SPY?
As of 2026-08-27, the correlation of weekly returns between MEDP and SPY is 0.32 over 3 years, 0.17 over 1 year and 0.47 over 5 years.
Is SPY a good diversifier for MEDP?
Reasonably. At 0.32, MEDP and SPY keep a meaningful degree of independence, and combining them has historically reduced portfolio volatility.
What does a correlation of 0.32 mean?
Correlation ranges from −1 to +1. Values near +1 mean two assets move together, near 0 that they move independently, and negative values that they tend to move in opposite directions. It measures co-movement, not performance.
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Related comparisons
Hubs: MEDP correlations · SPY correlations
