ATRC vs SIBN: Correlation
Measured on weekly returns over the past three years, AtriCure, Inc. (ATRC) and SI-BONE, Inc. (SIBN) carry a correlation of 0.46, a moderate link.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are ATRC and SIBN?
Over the past 3 years, ATRC and SIBN moved with a correlation of 0.46, which is moderate. Recent behaviour matches the longer record: 0.47 over 1 year against 0.46 over 3. Over 5 years the correlation is 0.41, and the annualized covariance of weekly returns is 1101.8 %².
In ATRC's tracked universe of 10 assets, SIBN sits right near the top at #1. Correlation aside, the last 12 months split them widely, with ATRC ahead by 16.4 points (+32.1% versus +15.7%).
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.
ATRC vs SIBN: side by side
| ATRC (AtriCure, Inc.) | SIBN (SI-BONE, Inc.) | |
|---|---|---|
| 1-year return | +32.1% | +15.7% |
| 5-year return | -33.3% | -19.1% |
| Volatility (ann.) | 45.4% | 52.2% |
| Beta vs S&P 500 | 0.97 | 0.73 |
| Max drawdown (3Y) | -57.3% | -49.3% |
| Market cap | $2.5B | $0.9B |
| P/E (trailing) | 224.0 | – |
| Dividend yield | 0.00% | 0.00% |
| Sector / category | US Listed | US Listed |
Year-by-year returns
| Year | ATRC | SIBN |
|---|---|---|
| 2022 | -36.2% | -38.8% |
| 2023 | -19.6% | +54.3% |
| 2024 | -14.4% | -33.2% |
| 2025 | +29.5% | +40.7% |
| 2026 | +24.5% | -2.6% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are ATRC and SIBN good diversifiers for each other?
Yes, to a useful degree: a correlation of 0.46 leaves real independence between the two, which historically damped combined volatility.
FAQ
What is the correlation between ATRC and SIBN?
As of 2026-08-27, the correlation of weekly returns between ATRC and SIBN is 0.46 over 3 years, 0.47 over 1 year and 0.41 over 5 years.
Is SIBN a good diversifier for ATRC?
Yes, to a useful degree: a correlation of 0.46 leaves real independence between the two, which historically damped combined volatility.
What does a correlation of 0.46 mean?
On the −1 to +1 scale, 0.46 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.
Use this data
$ curl https://www.pairbook.io/api/v1/pairs/atrc-vs-sibn.json
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Related comparisons
Hubs: ATRC correlations · SIBN correlations
