BIIB vs LBTYB: Correlation
Measured on weekly returns over the past three years, Biogen (BIIB) and Liberty Global Ltd. - Class B (LBTYB) carry a correlation of 0.36, a moderate link.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are BIIB and LBTYB?
Over the past 3 years, BIIB and LBTYB moved with a correlation of 0.36, which is moderate. Recent behaviour matches the longer record: 0.40 over 1 year against 0.36 over 3. Over 5 years the correlation is 0.22, and the annualized covariance of weekly returns is 621.4 %².
By 3-year correlation, LBTYB places #18 of the 32 assets tracked against BIIB. The last year tells two different stories: BIIB led by 51.9 percentage points, +62.4% for BIIB against +10.5% for LBTYB. Risk is not evenly split, since LBTYB carries 1.9 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.
BIIB vs LBTYB: side by side
| BIIB (Biogen) | LBTYB (Liberty Global Ltd. - Class B) | |
|---|---|---|
| 1-year return | +62.4% | +10.5% |
| 5-year return | -35.7% | -55.0% |
| Volatility (ann.) | 30.1% | 57.5% |
| Beta vs S&P 500 | 0.53 | 0.32 |
| Max drawdown (3Y) | -57.7% | -58.2% |
| Market cap | $32.7B | $4.4B |
| P/E (trailing) | 39.2 | – |
| Dividend yield | 0.00% | 0.00% |
| Sector / category | Health Care | US Listed |
Year-by-year returns
| Year | BIIB | LBTYB |
|---|---|---|
| 2022 | +15.4% | -32.5% |
| 2023 | -6.6% | -6.3% |
| 2024 | -40.9% | -27.3% |
| 2025 | +15.1% | -8.7% |
| 2026 | +25.9% | +9.4% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are BIIB and LBTYB good diversifiers for each other?
Reasonably. At 0.36, BIIB and LBTYB keep a meaningful degree of independence, and combining them has historically reduced portfolio volatility.
FAQ
What is the correlation between BIIB and LBTYB?
Using weekly returns as of 2026-08-27: 0.36 over 3 years, with 0.40 over the last year and 0.22 over 5 years.
Is LBTYB a good diversifier for BIIB?
Reasonably. At 0.36, BIIB and LBTYB keep a meaningful degree of independence, and combining them has historically reduced portfolio volatility.
What does a correlation of 0.36 mean?
On the −1 to +1 scale, 0.36 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: BIIB correlations · LBTYB correlations
