RCKT vs SPY: Correlation
How closely do Rocket Pharmaceuticals, Inc. (RCKT) and SPDR S&P 500 ETF Trust (SPY) trade together? Their weekly returns over three years give a correlation of 0.33, which is moderate.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are RCKT and SPY?
Across a 3-year window, the weekly returns of RCKT and SPY correlate at 0.33, moderate. The relationship has been stable: the 1-year correlation (0.40) sits close to the 3-year figure. Stretching to 5 years gives 0.36, with an annualized covariance of 372.5 %².
Within RCKT's tracked universe of 15 assets, SPY comes in at #9 by 3-year correlation. Over the last 12 months SPY came out ahead by 11.6 percentage points (+9.0% against +20.6%). One caveat on sizing: RCKT is 5.4 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.
RCKT vs SPY: side by side
| RCKT (Rocket Pharmaceuticals, Inc.) | SPY (SPDR S&P 500 ETF Trust) | |
|---|---|---|
| 1-year return | +9.0% | +20.6% |
| 5-year return | -89.2% | +82.4% |
| Volatility (ann.) | 78.7% | 14.5% |
| Beta vs S&P 500 | 1.78 | 1.00 |
| Max drawdown (3Y) | -92.7% | -18.8% |
| Market cap | $0.4B | – |
| P/E (trailing) | – | – |
| 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 | RCKT | SPY |
|---|---|---|
| 2022 | -10.4% | -18.2% |
| 2023 | +53.1% | +26.2% |
| 2024 | -58.1% | +24.9% |
| 2025 | -72.1% | +17.7% |
| 2026 | +3.1% | +13.7% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are RCKT and SPY good diversifiers for each other?
Yes, to a useful degree: a correlation of 0.33 leaves real independence between the two, which historically damped combined volatility.
FAQ
What is the correlation between RCKT and SPY?
The RCKT/SPY correlation stands at 0.33 on a 3-year window (1 year: 0.40, 5 years: 0.36), computed from weekly returns as of 2026-08-27.
Is SPY a good diversifier for RCKT?
Yes, to a useful degree: a correlation of 0.33 leaves real independence between the two, which historically damped combined volatility.
What does a correlation of 0.33 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: RCKT correlations · SPY correlations
