TDC vs WST: Correlation
How closely do Teradata Corporation (TDC) and West Pharmaceutical Services (WST) 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 TDC and WST?
On 3 years of weekly data the TDC/WST correlation comes out at 0.37, moderate. The link has loosened recently: the 1-year correlation (0.13) runs below the 3-year figure (0.37). The 5-year figure is 0.39, and annualized covariance runs at 632.6 %².
By 3-year correlation, WST places #6 of the 13 assets tracked against TDC. Over the last 12 months WST came out ahead by 5.8 percentage points (+35.3% against +41.1%).
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.
TDC vs WST: side by side
| TDC (Teradata Corporation) | WST (West Pharmaceutical Services) | |
|---|---|---|
| 1-year return | +35.3% | +41.1% |
| 5-year return | -46.9% | -22.4% |
| Volatility (ann.) | 44.0% | 38.6% |
| Beta vs S&P 500 | 0.83 | 0.86 |
| Max drawdown (3Y) | -60.8% | -53.8% |
| Market cap | $2.7B | $24.4B |
| P/E (trailing) | 5.7 | 44.8 |
| Dividend yield | 0.00% | 0.25% |
| Sector / category | US Listed | Health Care |
Year-by-year returns
| Year | TDC | WST |
|---|---|---|
| 2022 | -20.7% | -49.7% |
| 2023 | +29.3% | +50.0% |
| 2024 | -28.4% | -6.8% |
| 2025 | -2.3% | -15.7% |
| 2026 | -6.2% | +26.1% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are TDC and WST good diversifiers for each other?
Reasonably. At 0.37, TDC and WST keep a meaningful degree of independence, and combining them has historically reduced portfolio volatility.
FAQ
What is the correlation between TDC and WST?
As of 2026-08-27, the correlation of weekly returns between TDC and WST is 0.37 over 3 years, 0.13 over 1 year and 0.39 over 5 years.
Is WST a good diversifier for TDC?
Reasonably. At 0.37, TDC and WST keep a meaningful degree of independence, and combining them has historically reduced portfolio volatility.
What does a correlation of 0.37 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/tdc-vs-wst.json
Drop this badge in a README or notebook; it updates with the data:
[](https://www.pairbook.io/pair/tdc-vs-wst/)
No key needed, free to use. Full endpoint list in the API documentation.
Related comparisons
Hubs: TDC correlations · WST correlations
