RBRK vs SPY: Correlation
How closely do Rubrik, Inc. (RBRK) and SPDR S&P 500 ETF Trust (SPY) trade together? Their weekly returns over three years give a correlation of 0.42, which is moderate.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are RBRK and SPY?
Over the past 3 years, RBRK and SPY moved with a correlation of 0.42, which is moderate. Little has changed lately, as the 1-year reading of 0.36 lands near the 3-year figure. Over 5 years the correlation is n/a, and the annualized covariance of weekly returns is 401.6 %².
By 3-year correlation, SPY places #12 of the 20 assets tracked against RBRK. Neither side won the trailing year by much: +22.3% against +20.6%. Risk is not evenly split, since RBRK carries 4.4 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.
RBRK vs SPY: side by side
| RBRK (Rubrik, Inc.) | SPY (SPDR S&P 500 ETF Trust) | |
|---|---|---|
| 1-year return | +22.3% | +20.6% |
| 5-year return | n/a | +82.4% |
| Volatility (ann.) | 63.9% | 14.5% |
| Beta vs S&P 500 | 1.92 | 1.00 |
| Max drawdown (3Y) | -56.1% | -18.8% |
| Market cap | $22.0B | – |
| 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 | RBRK | SPY |
|---|---|---|
| 2022 | – | -18.2% |
| 2023 | – | +26.2% |
| 2024 | – | +24.9% |
| 2025 | +17.0% | +17.7% |
| 2026 | +39.9% | +13.7% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are RBRK and SPY good diversifiers for each other?
Yes, to a useful degree: a correlation of 0.42 leaves real independence between the two, which historically damped combined volatility.
FAQ
What is the correlation between RBRK and SPY?
The RBRK/SPY correlation stands at 0.42 on a 3-year window (1 year: 0.36, 5 years: n/a), computed from weekly returns as of 2026-08-27.
Is SPY a good diversifier for RBRK?
Yes, to a useful degree: a correlation of 0.42 leaves real independence between the two, which historically damped combined volatility.
What does a correlation of 0.42 mean?
A reading of 0.42 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/rbrk-vs-spy.json
Embed this badge (it refreshes with the data), with attribution:
[](https://www.pairbook.io/pair/rbrk-vs-spy/)
Free with attribution; caching and terms are described in the API documentation.
Related comparisons
Hubs: RBRK correlations · SPY correlations
