VTV vs WPRT: Correlation
Vanguard Value ETF (VTV) and Westport Fuel Systems Inc (WPRT) show a moderate relationship: their 3-year correlation of weekly returns is 0.45.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are VTV and WPRT?
On 3 years of weekly data the VTV/WPRT correlation comes out at 0.45, moderate. Lately the two have drifted apart, with the 1-year correlation at 0.26 versus 0.45 over 3 years. The 5-year figure is 0.42, and annualized covariance runs at 275.0 %².
Among the 149 assets we track against VTV, WPRT ranks #126 by 3-year correlation. The last year tells two different stories: VTV led by 61.2 percentage points, +25.7% for VTV against -35.5% for WPRT. Note the risk asymmetry: WPRT runs 4.3 times the annualized volatility of the other leg, so equal-weighting the two is not an equal-risk position.
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.
VTV vs WPRT: side by side
| VTV (Vanguard Value ETF) | WPRT (Westport Fuel Systems Inc) | |
|---|---|---|
| 1-year return | +25.7% | -35.5% |
| 5-year return | +79.1% | -95.2% |
| Volatility (ann.) | 11.9% | 51.7% |
| Beta vs S&P 500 | 0.65 | 1.44 |
| Max drawdown (3Y) | -14.5% | -80.0% |
| Market cap | – | – |
| P/E (trailing) | – | – |
| Dividend yield | 1.86% | 0.00% |
| Expense ratio | 0.03% | – |
| Assets under management | $256.4B | – |
| Sector / category | ETF · US Style | US Listed |
VTV, Vanguard's Large Value fund, carries $256.4B under management, 308 holdings, a 0.03% expense ratio, a 1.86% trailing dividend yield.
Year-by-year returns
| Year | VTV | WPRT |
|---|---|---|
| 2022 | -2.1% | -67.5% |
| 2023 | +9.3% | -14.0% |
| 2024 | +16.0% | -45.9% |
| 2025 | +15.3% | -56.1% |
| 2026 | +19.3% | +17.8% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are VTV and WPRT good diversifiers for each other?
Reasonably. At 0.45, VTV and WPRT keep a meaningful degree of independence, and combining them has historically reduced portfolio volatility.
FAQ
What is the correlation between VTV and WPRT?
As of 2026-08-27, the correlation of weekly returns between VTV and WPRT is 0.45 over 3 years, 0.26 over 1 year and 0.42 over 5 years.
Is WPRT a good diversifier for VTV?
Reasonably. At 0.45, VTV and WPRT keep a meaningful degree of independence, and combining them has historically reduced portfolio volatility.
What does a correlation of 0.45 mean?
A reading of 0.45 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/vtv-vs-wprt.json
Drop this badge in a README or notebook; it updates with the data:
[](https://www.pairbook.io/pair/vtv-vs-wprt/)
Free with attribution; caching and terms are described in the API documentation.
Related comparisons
Hubs: VTV correlations · WPRT correlations
