CACI vs PULM: Correlation
Measured on weekly returns over the past three years, CACI International, Inc. (CACI) and Pulmatrix, Inc. (PULM) carry a correlation of -0.27, a negative link.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are CACI and PULM?
On 3 years of weekly data the CACI/PULM correlation comes out at -0.27, negative, meaning they tend to move in opposite directions. The past 12 months show a tighter link (0.17) than the 3-year average (-0.27). The 5-year figure is -0.20, and annualized covariance runs at -1380.7 %².
PULM is close to the least connected end of CACI's tracked universe, ranking #15 of 16. Their recent paths diverged sharply: over the last 12 months CACI outperformed by 98.8 percentage points (+30.1% for CACI against -68.7% for PULM). Note the risk asymmetry: PULM runs 4.1 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.
CACI vs PULM: side by side
| CACI (CACI International, Inc.) | PULM (Pulmatrix, Inc.) | |
|---|---|---|
| 1-year return | +30.1% | -68.7% |
| 5-year return | +146.9% | -90.6% |
| Volatility (ann.) | 35.3% | 144.8% |
| Beta vs S&P 500 | 0.56 | -0.18 |
| Max drawdown (3Y) | -42.9% | -88.1% |
| Market cap | $14.0B | – |
| P/E (trailing) | 25.8 | – |
| Dividend yield | 0.00% | 0.00% |
| Sector / category | US Listed | US Listed |
Year-by-year returns
| Year | CACI | PULM |
|---|---|---|
| 2022 | +11.7% | -55.7% |
| 2023 | +7.7% | -52.1% |
| 2024 | +24.8% | +275.3% |
| 2025 | +31.9% | -68.1% |
| 2026 | +19.0% | -31.8% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are CACI and PULM good diversifiers for each other?
Yes: at -0.27, the two have gone their own ways historically, which is what genuine diversification looks like.
FAQ
What is the correlation between CACI and PULM?
The CACI/PULM correlation stands at -0.27 on a 3-year window (1 year: 0.17, 5 years: -0.20), computed from weekly returns as of 2026-08-27.
Is PULM a good diversifier for CACI?
Yes: at -0.27, the two have gone their own ways historically, which is what genuine diversification looks like.
What does a correlation of -0.27 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/caci-vs-pulm.json
Embed this badge (it refreshes with the data), with attribution:
[](https://www.pairbook.io/pair/caci-vs-pulm/)
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Related comparisons
Hubs: CACI correlations · PULM correlations
