BJDX vs RGS: Correlation
How closely do Bluejay Diagnostics, Inc. (BJDX) and Regis Corporation (RGS) trade together? Their weekly returns over three years give a correlation of -0.28, which is negative.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are BJDX and RGS?
On 3 years of weekly data the BJDX/RGS correlation comes out at -0.28, negative, meaning they tend to move in opposite directions. The past 12 months show a tighter link (0.05) than the 3-year average (-0.28). The 5-year figure is -0.20, and annualized covariance runs at -9471.7 %².
RGS is close to the least connected end of BJDX's tracked universe, ranking #17 of 19. Their recent paths diverged sharply: over the last 12 months RGS outperformed by 103.1 percentage points (-83.4% for BJDX against +19.7% for RGS).
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.
BJDX vs RGS: side by side
| BJDX (Bluejay Diagnostics, Inc.) | RGS (Regis Corporation) | |
|---|---|---|
| 1-year return | -83.4% | +19.7% |
| 5-year return | -100.0% | -75.3% |
| Volatility (ann.) | 151.7% | 226.7% |
| Beta vs S&P 500 | -0.30 | 0.65 |
| Max drawdown (3Y) | -100.0% | -81.1% |
| Market cap | – | – |
| P/E (trailing) | – | 0.6 |
| Dividend yield | 0.00% | 0.00% |
| Sector / category | US Listed | US Listed |
Year-by-year returns
| Year | BJDX | RGS |
|---|---|---|
| 2022 | -85.2% | -29.9% |
| 2023 | -83.9% | -61.3% |
| 2024 | -99.0% | +151.0% |
| 2025 | -86.3% | +17.0% |
| 2026 | -65.9% | -2.7% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are BJDX and RGS good diversifiers for each other?
By historical standards, yes. A correlation of -0.28 means the two rarely move for the same reasons.
FAQ
What is the correlation between BJDX and RGS?
Using weekly returns as of 2026-08-27: -0.28 over 3 years, with 0.05 over the last year and -0.20 over 5 years.
Is RGS a good diversifier for BJDX?
By historical standards, yes. A correlation of -0.28 means the two rarely move for the same reasons.
What does a correlation of -0.28 mean?
A reading of -0.28 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/bjdx-vs-rgs.json
Markdown for the live badge, attribution link included:
[](https://www.pairbook.io/pair/bjdx-vs-rgs/)
No key needed, free to use. Full endpoint list in the API documentation.
Related comparisons
Hubs: BJDX correlations · RGS correlations
