POST vs QCOM: Correlation
Post Holdings, Inc. (POST) and Qualcomm (QCOM) show a negative relationship: their 3-year correlation of weekly returns is -0.25.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are POST and QCOM?
Over the past 3 years, POST and QCOM moved with a correlation of -0.25, which is negative, meaning they tend to move in opposite directions. Recent behaviour matches the longer record: -0.35 over 1 year against -0.25 over 3. Over 5 years the correlation is -0.10, and the annualized covariance of weekly returns is -242.0 %².
QCOM is close to the least connected end of POST's tracked universe, ranking #15 of 19. The last year tells two different stories: QCOM led by 33.4 percentage points, -28.1% for POST against +5.3% for QCOM. One caveat on sizing: QCOM is 1.8 times as volatile as the other leg, so an equal-dollar split is far from equal-risk.
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.
POST vs QCOM: side by side
| POST (Post Holdings, Inc.) | QCOM (Qualcomm) | |
|---|---|---|
| 1-year return | -28.1% | +5.3% |
| 5-year return | +11.2% | +25.8% |
| Volatility (ann.) | 23.0% | 42.4% |
| Beta vs S&P 500 | 0.11 | 1.77 |
| Max drawdown (3Y) | -36.9% | -44.2% |
| Market cap | $3.7B | $176.0B |
| P/E (trailing) | 14.9 | 18.9 |
| Dividend yield | 0.00% | 2.19% |
| Sector / category | US Listed | Information Technology |
Year-by-year returns
| Year | POST | QCOM |
|---|---|---|
| 2022 | +22.3% | -38.6% |
| 2023 | -2.4% | +35.1% |
| 2024 | +30.0% | +8.3% |
| 2025 | -13.5% | +13.8% |
| 2026 | -17.7% | -2.7% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are POST and QCOM good diversifiers for each other?
Yes. With a correlation of -0.25, POST and QCOM have moved largely independently, which makes them a genuinely diversifying pair by historical standards.
FAQ
What is the correlation between POST and QCOM?
Using weekly returns as of 2026-08-27: -0.25 over 3 years, with -0.35 over the last year and -0.10 over 5 years.
Is QCOM a good diversifier for POST?
Yes. With a correlation of -0.25, POST and QCOM have moved largely independently, which makes them a genuinely diversifying pair by historical standards.
What does a correlation of -0.25 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/post-vs-qcom.json
Embed this badge (it refreshes with the data), with attribution:
[](https://www.pairbook.io/pair/post-vs-qcom/)
No key needed, free to use. Full endpoint list in the API documentation.
Related comparisons
Hubs: POST correlations · QCOM correlations
