BBIO vs SPY: Correlation
How closely do BridgeBio Pharma, Inc. (BBIO) and SPDR S&P 500 ETF Trust (SPY) trade together? Their weekly returns over three years give a correlation of 0.32, which is moderate.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are BBIO and SPY?
Across a 3-year window, the weekly returns of BBIO and SPY correlate at 0.32, moderate. The link has loosened recently: the 1-year correlation (0.04) runs below the 3-year figure (0.32). Stretching to 5 years gives 0.24, with an annualized covariance of 213.9 %².
Among the 10 assets we track against BBIO, SPY sits near the bottom by co-movement, at rank #6. The last year tells two different stories: BBIO led by 38.1 percentage points, +58.7% for BBIO against +20.6% for SPY. Risk is not evenly split, since BBIO carries 3.2 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.
BBIO vs SPY: side by side
| BBIO (BridgeBio Pharma, Inc.) | SPY (SPDR S&P 500 ETF Trust) | |
|---|---|---|
| 1-year return | +58.7% | +20.6% |
| 5-year return | +61.9% | +82.4% |
| Volatility (ann.) | 46.9% | 14.5% |
| Beta vs S&P 500 | 1.02 | 1.00 |
| Max drawdown (3Y) | -49.1% | -18.8% |
| Market cap | $15.4B | – |
| 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 | BBIO | SPY |
|---|---|---|
| 2022 | -54.3% | -18.2% |
| 2023 | +429.8% | +26.2% |
| 2024 | -32.0% | +24.9% |
| 2025 | +178.8% | +17.7% |
| 2026 | +2.9% | +13.7% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are BBIO and SPY good diversifiers for each other?
A fair diversifier. At 0.32, enough of each asset's movement is its own that the pair has smoothed outcomes historically.
FAQ
What is the correlation between BBIO and SPY?
The BBIO/SPY correlation stands at 0.32 on a 3-year window (1 year: 0.04, 5 years: 0.24), computed from weekly returns as of 2026-08-27.
Is SPY a good diversifier for BBIO?
A fair diversifier. At 0.32, enough of each asset's movement is its own that the pair has smoothed outcomes historically.
What does a correlation of 0.32 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.
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Related comparisons
Hubs: BBIO correlations · SPY correlations
