ACMR vs SPY: Correlation
Measured on weekly returns over the past three years, ACM Research, Inc. (ACMR) and SPDR S&P 500 ETF Trust (SPY) carry a correlation of 0.37, a moderate link.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are ACMR and SPY?
On 3 years of weekly data the ACMR/SPY correlation comes out at 0.37, moderate. Lately the two have moved closer together, with the 1-year correlation at 0.55 versus 0.37 over 3 years. The 5-year figure is 0.39, and annualized covariance runs at 433.2 %².
Within ACMR's tracked universe of 13 assets, SPY comes in at #7 by 3-year correlation. The last year tells two different stories: ACMR led by 161.0 percentage points, +181.6% for ACMR against +20.6% for SPY. Note the risk asymmetry: ACMR runs 5.6 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.
ACMR vs SPY: side by side
| ACMR (ACM Research, Inc.) | SPY (SPDR S&P 500 ETF Trust) | |
|---|---|---|
| 1-year return | +181.6% | +20.6% |
| 5-year return | +173.8% | +82.4% |
| Volatility (ann.) | 80.8% | 14.5% |
| Beta vs S&P 500 | 2.07 | 1.00 |
| Max drawdown (3Y) | -58.4% | -18.8% |
| Market cap | $5.6B | – |
| P/E (trailing) | 37.3 | – |
| 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 | ACMR | SPY |
|---|---|---|
| 2022 | -72.9% | -18.2% |
| 2023 | +153.4% | +26.2% |
| 2024 | -22.7% | +24.9% |
| 2025 | +161.3% | +17.7% |
| 2026 | +104.0% | +13.7% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are ACMR and SPY good diversifiers for each other?
A fair diversifier. At 0.37, enough of each asset's movement is its own that the pair has smoothed outcomes historically.
FAQ
What is the correlation between ACMR and SPY?
Using weekly returns as of 2026-08-27: 0.37 over 3 years, with 0.55 over the last year and 0.39 over 5 years.
Is SPY a good diversifier for ACMR?
A fair diversifier. At 0.37, enough of each asset's movement is its own that the pair has smoothed outcomes historically.
What does a correlation of 0.37 mean?
On the −1 to +1 scale, 0.37 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: ACMR correlations · SPY correlations
