BFRI vs SPY: Correlation
How closely do Biofrontera Inc. (BFRI) and SPDR S&P 500 ETF Trust (SPY) trade together? Their weekly returns over three years give a correlation of 0.10, which is weak.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are BFRI and SPY?
On 3 years of weekly data the BFRI/SPY correlation comes out at 0.10, weak. Lately the two have moved closer together, with the 1-year correlation at 0.40 versus 0.10 over 3 years. The 5-year figure is 0.11, and annualized covariance runs at 137.1 %².
Out of 10 assets tracked against BFRI, SPY lands near the bottom at #6. Their recent paths diverged sharply: over the last 12 months BFRI outperformed by 52.7 percentage points (+73.3% for BFRI against +20.6% for SPY). One caveat on sizing: BFRI is 6.4 times as volatile as the other leg, so an equal-dollar split is far from equal-risk.
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.
BFRI vs SPY: side by side
| BFRI (Biofrontera Inc.) | SPY (SPDR S&P 500 ETF Trust) | |
|---|---|---|
| 1-year return | +73.3% | +20.6% |
| 5-year return | -98.3% | +82.4% |
| Volatility (ann.) | 92.3% | 14.5% |
| Beta vs S&P 500 | 0.66 | 1.00 |
| Max drawdown (3Y) | -93.9% | -18.8% |
| Market cap | – | – |
| P/E (trailing) | – | – |
| Dividend yield | 0.00% | 1.01% |
| Expense ratio | – | 0.09% |
| Assets under management | – | $795.3B |
| Sector / category | US Listed | ETF · US Large Cap |
SPY is a Large Blend fund from State Street Investment Management: $795.3B under management, 504 holdings, a 0.09% expense ratio, a 1.01% trailing dividend yield.
Year-by-year returns
| Year | BFRI | SPY |
|---|---|---|
| 2022 | -87.8% | -18.2% |
| 2023 | -84.9% | +26.2% |
| 2024 | -60.6% | +24.9% |
| 2025 | -47.7% | +17.7% |
| 2026 | +161.4% | +13.7% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are BFRI and SPY good diversifiers for each other?
By historical standards, yes. A correlation of 0.10 means the two rarely move for the same reasons.
FAQ
What is the correlation between BFRI and SPY?
Using weekly returns as of 2026-08-27: 0.10 over 3 years, with 0.40 over the last year and 0.11 over 5 years.
Is SPY a good diversifier for BFRI?
By historical standards, yes. A correlation of 0.10 means the two rarely move for the same reasons.
What does a correlation of 0.10 mean?
On the −1 to +1 scale, 0.10 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.
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Related comparisons
Hubs: BFRI correlations · SPY correlations
