BSX vs SYK: Correlation
How closely do Boston Scientific (BSX) and Stryker Corporation (SYK) trade together? Their weekly returns over three years give a correlation of 0.52, which is moderate.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are BSX and SYK?
Over the past 3 years, BSX and SYK moved with a correlation of 0.52, which is moderate. Lately the two have drifted apart, with the 1-year correlation at 0.41 versus 0.52 over 3 years. Over 5 years the correlation is 0.63, and the annualized covariance of weekly returns is 306.2 %².
SYK is one of the assets that tracks BSX most closely: it ranks #2 out of the 33 assets we track against BSX. The last year tells two different stories: SYK led by 38.7 percentage points, -55.9% for BSX against -17.2% for SYK. Across three years, the rolling one-year figure varied moderately, from 0.41 to 0.78.
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.
BSX vs SYK: side by side
| BSX (Boston Scientific) | SYK (Stryker Corporation) | |
|---|---|---|
| 1-year return | -55.9% | -17.2% |
| 5-year return | +4.1% | +23.8% |
| Volatility (ann.) | 27.6% | 21.5% |
| Beta vs S&P 500 | 0.72 | 0.61 |
| Max drawdown (3Y) | -60.6% | -29.4% |
| Market cap | $67.6B | $123.6B |
| P/E (trailing) | 19.5 | 34.1 |
| Dividend yield | 0.00% | 1.06% |
| Sector / category | Health Care | Health Care |
Year-by-year returns
| Year | BSX | SYK |
|---|---|---|
| 2022 | +8.9% | -7.4% |
| 2023 | +24.9% | +23.8% |
| 2024 | +54.5% | +21.3% |
| 2025 | +6.8% | -1.5% |
| 2026 | -51.1% | -7.9% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are BSX and SYK good diversifiers for each other?
Somewhat, no more. With 0.52 correlation, most large moves hit both names, and the diversification benefit stays modest.
FAQ
What is the correlation between BSX and SYK?
The BSX/SYK correlation stands at 0.52 on a 3-year window (1 year: 0.41, 5 years: 0.63), computed from weekly returns as of 2026-08-27.
Is SYK a good diversifier for BSX?
Somewhat, no more. With 0.52 correlation, most large moves hit both names, and the diversification benefit stays modest.
What does a correlation of 0.52 mean?
A reading of 0.52 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/bsx-vs-syk.json
Embed this badge (it refreshes with the data), with attribution:
[](https://www.pairbook.io/pair/bsx-vs-syk/)
No key needed, free to use. Full endpoint list in the API documentation.
Related comparisons
Hubs: BSX correlations · SYK correlations
