BSX vs PODD: Correlation
How closely do Boston Scientific (BSX) and Insulet Corporation (PODD) trade together? Their weekly returns over three years give a correlation of 0.37, which is moderate.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are BSX and PODD?
Over the past 3 years, BSX and PODD moved with a correlation of 0.37, which is moderate. Recent behaviour matches the longer record: 0.34 over 1 year against 0.37 over 3. Over 5 years the correlation is 0.40, and the annualized covariance of weekly returns is 398.7 %².
By 3-year correlation, PODD places #18 of the 33 assets tracked against BSX. Neither side won the trailing year by much: -55.9% against -57.1%. Across three years, the rolling one-year figure varied moderately, from 0.25 to 0.56.
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 PODD: side by side
| BSX (Boston Scientific) | PODD (Insulet Corporation) | |
|---|---|---|
| 1-year return | -55.9% | -57.1% |
| 5-year return | +4.1% | -51.6% |
| Volatility (ann.) | 27.6% | 38.9% |
| Beta vs S&P 500 | 0.72 | 0.67 |
| Max drawdown (3Y) | -60.6% | -62.2% |
| Market cap | $67.6B | $9.9B |
| P/E (trailing) | 19.5 | 26.9 |
| Dividend yield | 0.00% | 0.00% |
| Sector / category | Health Care | Health Care |
Year-by-year returns
| Year | BSX | PODD |
|---|---|---|
| 2022 | +8.9% | +10.6% |
| 2023 | +24.9% | -26.3% |
| 2024 | +54.5% | +20.3% |
| 2025 | +6.8% | +8.9% |
| 2026 | -51.1% | -49.5% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are BSX and PODD good diversifiers for each other?
Reasonably. At 0.37, BSX and PODD keep a meaningful degree of independence, and combining them has historically reduced portfolio volatility.
FAQ
What is the correlation between BSX and PODD?
Using weekly returns as of 2026-08-27: 0.37 over 3 years, with 0.34 over the last year and 0.40 over 5 years.
Is PODD a good diversifier for BSX?
Reasonably. At 0.37, BSX and PODD keep a meaningful degree of independence, and combining them has historically reduced portfolio volatility.
What does a correlation of 0.37 mean?
A reading of 0.37 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-podd.json
Embed this badge (it refreshes with the data), with attribution:
[](https://www.pairbook.io/pair/bsx-vs-podd/)
No key needed, free to use. Full endpoint list in the API documentation.
Related comparisons
Hubs: BSX correlations · PODD correlations
