ATRC vs TOST: Correlation
AtriCure, Inc. (ATRC) and Toast, Inc. (TOST) show a moderate relationship: their 3-year correlation of weekly returns is 0.43.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are ATRC and TOST?
Across a 3-year window, the weekly returns of ATRC and TOST correlate at 0.43, moderate. Little has changed lately, as the 1-year reading of 0.40 lands near the 3-year figure. Stretching to 5 years gives 0.47, with an annualized covariance of 928.0 %².
Few assets follow ATRC as closely as TOST, which ranks #3 of 10 tracked partners. Their recent paths diverged sharply: over the last 12 months ATRC outperformed by 51.9 percentage points (+32.1% for ATRC against -19.8% for TOST).
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 TOST: side by side
| ATRC (AtriCure, Inc.) | TOST (Toast, Inc.) | |
|---|---|---|
| 1-year return | +32.1% | -19.8% |
| 5-year return | -33.3% | -43.7% |
| Volatility (ann.) | 45.4% | 47.1% |
| Beta vs S&P 500 | 0.97 | 1.36 |
| Max drawdown (3Y) | -57.3% | -54.7% |
| Market cap | $2.5B | $20.3B |
| P/E (trailing) | 224.0 | 46.9 |
| Dividend yield | 0.00% | 0.00% |
| Sector / category | US Listed | US Listed |
Year-by-year returns
| Year | ATRC | TOST |
|---|---|---|
| 2022 | -36.2% | -48.1% |
| 2023 | -19.6% | +1.3% |
| 2024 | -14.4% | +99.6% |
| 2025 | +29.5% | -2.6% |
| 2026 | +24.5% | -1.0% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are ATRC and TOST good diversifiers for each other?
A fair diversifier. At 0.43, enough of each asset's movement is its own that the pair has smoothed outcomes historically.
FAQ
What is the correlation between ATRC and TOST?
As of 2026-08-27, the correlation of weekly returns between ATRC and TOST is 0.43 over 3 years, 0.40 over 1 year and 0.47 over 5 years.
Is TOST a good diversifier for ATRC?
A fair diversifier. At 0.43, enough of each asset's movement is its own that the pair has smoothed outcomes historically.
What does a correlation of 0.43 mean?
A reading of 0.43 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/atrc-vs-tost.json
Embed this badge (it refreshes with the data), with attribution:
[](https://www.pairbook.io/pair/atrc-vs-tost/)
No key needed, free to use. Full endpoint list in the API documentation.
Related comparisons
Hubs: ATRC correlations · TOST correlations
