SPY vs SRRK: Correlation
Measured on weekly returns over the past three years, SPDR S&P 500 ETF Trust (SPY) and Scholar Rock Holding Corporation (SRRK) carry a correlation of 0.13, a weak link.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are SPY and SRRK?
On 3 years of weekly data the SPY/SRRK correlation comes out at 0.13, weak. Recent behaviour matches the longer record: 0.09 over 1 year against 0.13 over 3. The 5-year figure is 0.18, and annualized covariance runs at 309.1 %².
Among the 4755 assets we track against SPY, SRRK ranks #3892 by 3-year correlation. Their recent paths diverged sharply: over the last 12 months SRRK outperformed by 51.3 percentage points (+20.6% for SPY against +71.9% for SRRK). Risk is not evenly split, since SRRK carries 11.3 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.
SPY vs SRRK: side by side
| SPY (SPDR S&P 500 ETF Trust) | SRRK (Scholar Rock Holding Corporation) | |
|---|---|---|
| 1-year return | +20.6% | +71.9% |
| 5-year return | +82.4% | +54.0% |
| Volatility (ann.) | 14.5% | 164.2% |
| Beta vs S&P 500 | 1.00 | 1.48 |
| Max drawdown (3Y) | -18.8% | -65.2% |
| Market cap | – | $7.2B |
| P/E (trailing) | – | – |
| Dividend yield | 1.01% | 0.00% |
| Expense ratio | 0.09% | – |
| Assets under management | $795.3B | – |
| Sector / category | ETF · US Large Cap | US Listed |
SPY, State Street Investment Management's Large Blend fund, carries $795.3B under management, 504 holdings, a 0.09% expense ratio, a 1.01% trailing dividend yield.
Year-by-year returns
| Year | SPY | SRRK |
|---|---|---|
| 2022 | -18.2% | -63.6% |
| 2023 | +26.2% | +107.7% |
| 2024 | +24.9% | +129.9% |
| 2025 | +17.7% | +1.9% |
| 2026 | +13.7% | +34.5% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are SPY and SRRK good diversifiers for each other?
By historical standards, yes. A correlation of 0.13 means the two rarely move for the same reasons.
FAQ
What is the correlation between SPY and SRRK?
As of 2026-08-27, the correlation of weekly returns between SPY and SRRK is 0.13 over 3 years, 0.09 over 1 year and 0.18 over 5 years.
Is SRRK a good diversifier for SPY?
By historical standards, yes. A correlation of 0.13 means the two rarely move for the same reasons.
What does a correlation of 0.13 mean?
A reading of 0.13 sits on a scale from −1 (opposite moves) through 0 (unrelated) to +1 (identical moves). Correlation captures direction, not magnitude or performance.
Use this data
$ curl https://www.pairbook.io/api/v1/pairs/spy-vs-srrk.json
Drop this badge in a README or notebook; it updates with the data:
[](https://www.pairbook.io/pair/spy-vs-srrk/)
The core API is free. Terms and every endpoint in the API documentation.
Related comparisons
Hubs: SPY correlations · SRRK correlations
