PFE vs RAYA: Correlation
Measured on weekly returns over the past three years, Pfizer (PFE) and Erayak Power Solution Group Inc. - Class A (RAYA) carry a correlation of -0.19, a negative link.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are PFE and RAYA?
On 3 years of weekly data the PFE/RAYA correlation comes out at -0.19, negative, meaning they tend to move in opposite directions. The past 12 months show a weaker link (-0.38) than the 3-year average (-0.19). The 5-year figure is -0.17, and annualized covariance runs at -752.0 %².
Out of 32 assets tracked against PFE, RAYA lands near the bottom at #29. Their recent paths diverged sharply: over the last 12 months PFE outperformed by 117.4 percentage points (+19.6% for PFE against -97.8% for RAYA). Risk is not evenly split, since RAYA carries 6.8 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.
PFE vs RAYA: side by side
| PFE (Pfizer) | RAYA (Erayak Power Solution Group Inc. - Class A) | |
|---|---|---|
| 1-year return | +19.6% | -97.8% |
| 5-year return | -21.9% | n/a |
| Volatility (ann.) | 23.8% | 162.4% |
| Beta vs S&P 500 | 0.40 | 0.17 |
| Max drawdown (3Y) | -34.8% | -100.0% |
| Market cap | $159.7B | – |
| P/E (trailing) | 37.4 | – |
| Dividend yield | 6.08% | 0.00% |
| Sector / category | Health Care | US Listed |
Year-by-year returns
| Year | PFE | RAYA |
|---|---|---|
| 2022 | -10.4% | – |
| 2023 | -41.3% | -44.7% |
| 2024 | -2.2% | +23.6% |
| 2025 | +0.6% | -98.7% |
| 2026 | +18.3% | -94.0% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are PFE and RAYA good diversifiers for each other?
By historical standards, yes. A correlation of -0.19 means the two rarely move for the same reasons.
FAQ
What is the correlation between PFE and RAYA?
As of 2026-08-27, the correlation of weekly returns between PFE and RAYA is -0.19 over 3 years, -0.38 over 1 year and -0.17 over 5 years.
Is RAYA a good diversifier for PFE?
By historical standards, yes. A correlation of -0.19 means the two rarely move for the same reasons.
What does a correlation of -0.19 mean?
On the −1 to +1 scale, -0.19 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/pfe-vs-raya.json
Drop this badge in a README or notebook; it updates with the data:
[](https://www.pairbook.io/pair/pfe-vs-raya/)
The core API is free. Terms and every endpoint in the API documentation.
Related comparisons
Hubs: PFE correlations · RAYA correlations
