ISPC vs UNP: Correlation
How closely do iSpecimen Inc. (ISPC) and Union Pacific Corporation (UNP) trade together? Their weekly returns over three years give a correlation of -0.20, which is negative.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are ISPC and UNP?
Across a 3-year window, the weekly returns of ISPC and UNP correlate at -0.20, negative, meaning they tend to move in opposite directions. Recent behaviour matches the longer record: -0.20 over 1 year against -0.20 over 3. Stretching to 5 years gives -0.05, with an annualized covariance of -510.5 %².
UNP is close to the least connected end of ISPC's tracked universe, ranking #11 of 15. The last year tells two different stories: UNP led by 137.0 percentage points, -94.6% for ISPC against +42.4% for UNP. Risk is not evenly split, since ISPC carries 5.9 times the volatility of the other side.
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.
ISPC vs UNP: side by side
| ISPC (iSpecimen Inc.) | UNP (Union Pacific Corporation) | |
|---|---|---|
| 1-year return | -94.6% | +42.4% |
| 5-year return | -100.0% | +56.5% |
| Volatility (ann.) | 121.8% | 20.6% |
| Beta vs S&P 500 | 0.67 | 0.56 |
| Max drawdown (3Y) | -99.8% | -17.8% |
| Market cap | – | $182.8B |
| P/E (trailing) | – | 25.1 |
| Dividend yield | 0.00% | 1.78% |
| Sector / category | US Listed | Industrials |
Year-by-year returns
| Year | ISPC | UNP |
|---|---|---|
| 2022 | -82.4% | -15.9% |
| 2023 | -63.6% | +21.6% |
| 2024 | -73.5% | -5.1% |
| 2025 | -90.2% | +3.9% |
| 2026 | -84.6% | +34.4% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are ISPC and UNP good diversifiers for each other?
Yes: at -0.20, the two have gone their own ways historically, which is what genuine diversification looks like.
FAQ
What is the correlation between ISPC and UNP?
The ISPC/UNP correlation stands at -0.20 on a 3-year window (1 year: -0.20, 5 years: -0.05), computed from weekly returns as of 2026-08-27.
Is UNP a good diversifier for ISPC?
Yes: at -0.20, the two have gone their own ways historically, which is what genuine diversification looks like.
What does a correlation of -0.20 mean?
On the −1 to +1 scale, -0.20 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.
Use this data
$ curl https://www.pairbook.io/api/v1/pairs/ispc-vs-unp.json
Embed this badge (it refreshes with the data), with attribution:
[](https://www.pairbook.io/pair/ispc-vs-unp/)
No key needed, free to use. Full endpoint list in the API documentation.
Related comparisons
Hubs: ISPC correlations · UNP correlations
