PROF vs VTOL: Correlation
Profound Medical Corp. (PROF) and Bristow Group, Inc. (VTOL) show a moderate relationship: their 3-year correlation of weekly returns is 0.34.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are PROF and VTOL?
Across a 3-year window, the weekly returns of PROF and VTOL correlate at 0.34, moderate. The past 12 months show a weaker link (0.23) than the 3-year average (0.34). Stretching to 5 years gives 0.21, with an annualized covariance of 760.2 %².
In PROF's tracked universe of 10 assets, VTOL sits right near the top at #3. Their recent paths diverged sharply: over the last 12 months PROF outperformed by 32.5 percentage points (+54.0% for PROF against +21.5% for VTOL). Risk is not evenly split, since PROF carries 1.6 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.
PROF vs VTOL: side by side
| PROF (Profound Medical Corp.) | VTOL (Bristow Group, Inc.) | |
|---|---|---|
| 1-year return | +54.0% | +21.5% |
| 5-year return | -53.1% | +49.4% |
| Volatility (ann.) | 59.6% | 38.0% |
| Beta vs S&P 500 | 0.92 | 1.00 |
| Max drawdown (3Y) | -65.4% | -35.3% |
| Market cap | $0.3B | $1.4B |
| P/E (trailing) | – | 13.0 |
| Dividend yield | 0.00% | 0.55% |
| Sector / category | US Listed | US Listed |
Year-by-year returns
| Year | PROF | VTOL |
|---|---|---|
| 2022 | -3.0% | -14.3% |
| 2023 | -22.0% | +4.2% |
| 2024 | -11.5% | +21.3% |
| 2025 | +4.8% | +6.8% |
| 2026 | -11.6% | +26.3% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are PROF and VTOL good diversifiers for each other?
Yes, to a useful degree: a correlation of 0.34 leaves real independence between the two, which historically damped combined volatility.
FAQ
What is the correlation between PROF and VTOL?
As of 2026-08-27, the correlation of weekly returns between PROF and VTOL is 0.34 over 3 years, 0.23 over 1 year and 0.21 over 5 years.
Is VTOL a good diversifier for PROF?
Yes, to a useful degree: a correlation of 0.34 leaves real independence between the two, which historically damped combined volatility.
What does a correlation of 0.34 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.
Use this data
$ curl https://www.pairbook.io/api/v1/pairs/prof-vs-vtol.json
Drop this badge in a README or notebook; it updates with the data:
[](https://www.pairbook.io/pair/prof-vs-vtol/)
The core API is free. Terms and every endpoint in the API documentation.
Related comparisons
Hubs: PROF correlations · VTOL correlations
