BDX vs BLCO: Correlation
How closely do Becton Dickinson (BDX) and Bausch + Lomb Corporation (BLCO) trade together? Their weekly returns over three years give a correlation of 0.46, which is moderate.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are BDX and BLCO?
Across a 3-year window, the weekly returns of BDX and BLCO correlate at 0.46, moderate. Recent behaviour matches the longer record: 0.53 over 1 year against 0.46 over 3. Stretching to 5 years gives 0.40, with an annualized covariance of 442.5 %².
Among the 28 assets we track against BDX, BLCO ranks #6 by 3-year correlation. On 12-month performance BDX holds a 7.8-point edge, +25.5% against +17.7%. Risk is not evenly split, since BLCO carries 1.7 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.
BDX vs BLCO: side by side
| BDX (Becton Dickinson) | BLCO (Bausch + Lomb Corporation) | |
|---|---|---|
| 1-year return | +25.5% | +17.7% |
| 5-year return | +6.8% | -14.4% |
| Volatility (ann.) | 24.0% | 39.6% |
| Beta vs S&P 500 | 0.33 | 0.82 |
| Max drawdown (3Y) | -39.6% | -47.9% |
| Market cap | $51.2B | $6.1B |
| P/E (trailing) | 32.9 | – |
| Dividend yield | 2.20% | 0.00% |
| Sector / category | Health Care | US Listed |
Year-by-year returns
| Year | BDX | BLCO |
|---|---|---|
| 2022 | +5.1% | – |
| 2023 | -2.7% | +10.0% |
| 2024 | -5.4% | +5.9% |
| 2025 | -12.6% | -5.4% |
| 2026 | +25.0% | +0.3% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are BDX and BLCO good diversifiers for each other?
Reasonably. At 0.46, BDX and BLCO keep a meaningful degree of independence, and combining them has historically reduced portfolio volatility.
FAQ
What is the correlation between BDX and BLCO?
Using weekly returns as of 2026-08-27: 0.46 over 3 years, with 0.53 over the last year and 0.40 over 5 years.
Is BLCO a good diversifier for BDX?
Reasonably. At 0.46, BDX and BLCO keep a meaningful degree of independence, and combining them has historically reduced portfolio volatility.
What does a correlation of 0.46 mean?
A reading of 0.46 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/bdx-vs-blco.json
Markdown for the live badge, attribution link included:
[](https://www.pairbook.io/pair/bdx-vs-blco/)
The core API is free. Terms and every endpoint in the API documentation.
Related comparisons
Hubs: BDX correlations · BLCO correlations
