THW vs VRTX: Correlation
abrdn World Healthcare Fund Shares of Beneficial Interest (THW) and Vertex Pharmaceuticals (VRTX) show a moderate relationship: their 3-year correlation of weekly returns is 0.43.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are THW and VRTX?
Over the past 3 years, THW and VRTX moved with a correlation of 0.43, which is moderate. The past 12 months show a tighter link (0.58) than the 3-year average (0.43). Over 5 years the correlation is 0.41, and the annualized covariance of weekly returns is 276.6 %².
Within THW's tracked universe of 25 assets, VRTX comes in at #10 by 3-year correlation. Over the last 12 months VRTX came out ahead by 7.0 percentage points (+33.7% against +40.7%).
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.
THW vs VRTX: side by side
| THW (abrdn World Healthcare Fund Shares of Beneficial Interest) | VRTX (Vertex Pharmaceuticals) | |
|---|---|---|
| 1-year return | +33.7% | +40.7% |
| 5-year return | +40.2% | +174.5% |
| Volatility (ann.) | 21.4% | 30.3% |
| Beta vs S&P 500 | 0.75 | 0.55 |
| Max drawdown (3Y) | -25.4% | -29.1% |
| Market cap | $0.6B | $138.8B |
| P/E (trailing) | 6.6 | 31.9 |
| Dividend yield | 0.00% | 0.00% |
| Sector / category | US Listed | Health Care |
Year-by-year returns
| Year | THW | VRTX |
|---|---|---|
| 2022 | -1.2% | +31.5% |
| 2023 | -11.5% | +40.9% |
| 2024 | +5.4% | -1.0% |
| 2025 | +31.1% | +12.6% |
| 2026 | +18.0% | +20.8% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are THW and VRTX good diversifiers for each other?
A fair diversifier. At 0.43, enough of each asset's movement is its own that the pair has smoothed outcomes historically.
FAQ
What is the correlation between THW and VRTX?
Using weekly returns as of 2026-08-27: 0.43 over 3 years, with 0.58 over the last year and 0.41 over 5 years.
Is VRTX a good diversifier for THW?
A fair diversifier. At 0.43, enough of each asset's movement is its own that the pair has smoothed outcomes historically.
What does a correlation of 0.43 mean?
A reading of 0.43 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/thw-vs-vrtx.json
Markdown for the live badge, attribution link included:
[](https://www.pairbook.io/pair/thw-vs-vrtx/)
The core API is free. Terms and every endpoint in the API documentation.
Related comparisons
Hubs: THW correlations · VRTX correlations
