CTSH vs LUNG: Correlation
How closely do Cognizant (CTSH) and Pulmonx Corporation (LUNG) trade together? Their weekly returns over three years give a correlation of 0.41, which is moderate.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are CTSH and LUNG?
On 3 years of weekly data the CTSH/LUNG correlation comes out at 0.41, moderate. The past 12 months show a tighter link (0.55) than the 3-year average (0.41). The 5-year figure is 0.45, and annualized covariance runs at 1186.5 %².
By 3-year correlation, LUNG places #27 of the 44 assets tracked against CTSH. The last year tells two different stories: LUNG led by 39.9 percentage points, -9.8% for CTSH against +30.1% for LUNG. Note the risk asymmetry: LUNG runs 2.7 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.
CTSH vs LUNG: side by side
| CTSH (Cognizant) | LUNG (Pulmonx Corporation) | |
|---|---|---|
| 1-year return | -9.8% | +30.1% |
| 5-year return | -9.6% | -93.8% |
| Volatility (ann.) | 32.3% | 88.5% |
| Beta vs S&P 500 | 0.89 | 1.56 |
| Max drawdown (3Y) | -56.1% | -92.0% |
| Market cap | $28.7B | $0.1B |
| P/E (trailing) | 13.3 | – |
| Dividend yield | 2.09% | 0.00% |
| Sector / category | Information Technology | US Listed |
Year-by-year returns
| Year | CTSH | LUNG |
|---|---|---|
| 2022 | -34.5% | -73.7% |
| 2023 | +34.4% | +51.2% |
| 2024 | +3.5% | -46.7% |
| 2025 | +9.7% | -67.5% |
| 2026 | -21.8% | +9.5% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are CTSH and LUNG good diversifiers for each other?
A fair diversifier. At 0.41, enough of each asset's movement is its own that the pair has smoothed outcomes historically.
FAQ
What is the correlation between CTSH and LUNG?
As of 2026-08-27, the correlation of weekly returns between CTSH and LUNG is 0.41 over 3 years, 0.55 over 1 year and 0.45 over 5 years.
Is LUNG a good diversifier for CTSH?
A fair diversifier. At 0.41, enough of each asset's movement is its own that the pair has smoothed outcomes historically.
What does a correlation of 0.41 mean?
On the −1 to +1 scale, 0.41 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.
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Related comparisons
Hubs: CTSH correlations · LUNG correlations
