SONO vs WST: Correlation
How closely do Sonos, Inc. (SONO) and West Pharmaceutical Services (WST) trade together? Their weekly returns over three years give a correlation of 0.38, which is moderate.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are SONO and WST?
Across a 3-year window, the weekly returns of SONO and WST correlate at 0.38, moderate. The past 12 months show a tighter link (0.50) than the 3-year average (0.38). Stretching to 5 years gives 0.39, with an annualized covariance of 662.1 %².
Out of 14 assets tracked against SONO, WST lands near the bottom at #10. The last year tells two different stories: WST led by 32.8 percentage points, +8.3% for SONO against +41.1% for WST.
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.
SONO vs WST: side by side
| SONO (Sonos, Inc.) | WST (West Pharmaceutical Services) | |
|---|---|---|
| 1-year return | +8.3% | +41.1% |
| 5-year return | -61.8% | -22.4% |
| Volatility (ann.) | 44.8% | 38.6% |
| Beta vs S&P 500 | 1.66 | 0.86 |
| Max drawdown (3Y) | -60.5% | -53.8% |
| Market cap | $1.8B | $24.4B |
| P/E (trailing) | 33.6 | 44.8 |
| Dividend yield | 0.00% | 0.25% |
| Sector / category | US Listed | Health Care |
Year-by-year returns
| Year | SONO | WST |
|---|---|---|
| 2022 | -43.3% | -49.7% |
| 2023 | +1.4% | +50.0% |
| 2024 | -12.3% | -6.8% |
| 2025 | +16.8% | -15.7% |
| 2026 | -14.0% | +26.1% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are SONO and WST good diversifiers for each other?
Yes, to a useful degree: a correlation of 0.38 leaves real independence between the two, which historically damped combined volatility.
FAQ
What is the correlation between SONO and WST?
Using weekly returns as of 2026-08-27: 0.38 over 3 years, with 0.50 over the last year and 0.39 over 5 years.
Is WST a good diversifier for SONO?
Yes, to a useful degree: a correlation of 0.38 leaves real independence between the two, which historically damped combined volatility.
What does a correlation of 0.38 mean?
On the −1 to +1 scale, 0.38 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.
Use this data
$ curl https://www.pairbook.io/api/v1/pairs/sono-vs-wst.json
Drop this badge in a README or notebook; it updates with the data:
[](https://www.pairbook.io/pair/sono-vs-wst/)
No key needed, free to use. Full endpoint list in the API documentation.
Related comparisons
Hubs: SONO correlations · WST correlations
