BSX vs NWSA: Correlation
Boston Scientific (BSX) and News Corp (Class A) (NWSA) show a moderate relationship: their 3-year correlation of weekly returns is 0.42.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are BSX and NWSA?
Across a 3-year window, the weekly returns of BSX and NWSA correlate at 0.42, moderate. Little has changed lately, as the 1-year reading of 0.38 lands near the 3-year figure. Stretching to 5 years gives 0.44, with an annualized covariance of 271.0 %².
By 3-year correlation, NWSA places #13 of the 33 assets tracked against BSX. Correlation aside, the last 12 months split them widely, with NWSA ahead by 61.9 points (-55.9% versus +6.0%). The rolling one-year correlation moved between 0.25 and 0.66 over the past three years, a moderate range.
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 NWSA: side by side
| BSX (Boston Scientific) | NWSA (News Corp (Class A)) | |
|---|---|---|
| 1-year return | -55.9% | +6.0% |
| 5-year return | +4.1% | +45.9% |
| Volatility (ann.) | 27.6% | 23.4% |
| Beta vs S&P 500 | 0.72 | 0.76 |
| Max drawdown (3Y) | -60.6% | -27.8% |
| Market cap | $67.6B | $16.8B |
| P/E (trailing) | 19.5 | 30.0 |
| Dividend yield | 0.00% | 0.65% |
| Sector / category | Health Care | Communication Services |
Year-by-year returns
| Year | BSX | NWSA |
|---|---|---|
| 2022 | +8.9% | -17.6% |
| 2023 | +24.9% | +36.4% |
| 2024 | +54.5% | +13.0% |
| 2025 | +6.8% | -4.5% |
| 2026 | -51.1% | +19.9% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are BSX and NWSA good diversifiers for each other?
Reasonably. At 0.42, BSX and NWSA keep a meaningful degree of independence, and combining them has historically reduced portfolio volatility.
FAQ
What is the correlation between BSX and NWSA?
As of 2026-08-27, the correlation of weekly returns between BSX and NWSA is 0.42 over 3 years, 0.38 over 1 year and 0.44 over 5 years.
Is NWSA a good diversifier for BSX?
Reasonably. At 0.42, BSX and NWSA keep a meaningful degree of independence, and combining them has historically reduced portfolio volatility.
What does a correlation of 0.42 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.
Use this data
$ curl https://www.pairbook.io/api/v1/pairs/bsx-vs-nwsa.json
Embed this badge (it refreshes with the data), with attribution:
[](https://www.pairbook.io/pair/bsx-vs-nwsa/)
No key needed, free to use. Full endpoint list in the API documentation.
Related comparisons
Hubs: BSX correlations · NWSA correlations
