NSYS vs PODD: Correlation
Measured on weekly returns over the past three years, Nortech Systems Incorporated (NSYS) and Insulet Corporation (PODD) carry a correlation of -0.19, a negative link.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are NSYS and PODD?
Over the past 3 years, NSYS and PODD moved with a correlation of -0.19, which is negative, meaning they tend to move in opposite directions. The past 12 months show a weaker link (-0.30) than the 3-year average (-0.19). Over 5 years the correlation is -0.10, and the annualized covariance of weekly returns is -391.6 %².
Within NSYS's tracked universe of 16 assets, PODD comes in at #9 by 3-year correlation. The last year tells two different stories: NSYS led by 93.7 percentage points, +36.6% for NSYS against -57.1% for PODD.
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.
NSYS vs PODD: side by side
| NSYS (Nortech Systems Incorporated) | PODD (Insulet Corporation) | |
|---|---|---|
| 1-year return | +36.6% | -57.1% |
| 5-year return | -4.7% | -51.6% |
| Volatility (ann.) | 52.5% | 38.9% |
| Beta vs S&P 500 | 0.23 | 0.67 |
| Max drawdown (3Y) | -62.0% | -62.2% |
| Market cap | – | $9.9B |
| P/E (trailing) | 34.2 | 26.9 |
| Dividend yield | 0.00% | 0.00% |
| Sector / category | US Listed | Health Care |
Year-by-year returns
| Year | NSYS | PODD |
|---|---|---|
| 2022 | +18.4% | +10.6% |
| 2023 | -23.1% | -26.3% |
| 2024 | +9.2% | +20.3% |
| 2025 | -27.8% | +8.9% |
| 2026 | +65.7% | -49.5% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are NSYS and PODD good diversifiers for each other?
Yes: at -0.19, the two have gone their own ways historically, which is what genuine diversification looks like.
FAQ
What is the correlation between NSYS and PODD?
The NSYS/PODD correlation stands at -0.19 on a 3-year window (1 year: -0.30, 5 years: -0.10), computed from weekly returns as of 2026-08-27.
Is PODD a good diversifier for NSYS?
Yes: at -0.19, the two have gone their own ways historically, which is what genuine diversification looks like.
What does a correlation of -0.19 mean?
A reading of -0.19 sits on a scale from −1 (opposite moves) through 0 (unrelated) to +1 (identical moves). Correlation captures direction, not magnitude or performance.
Use this data
$ curl https://www.pairbook.io/api/v1/pairs/nsys-vs-podd.json
Embed this badge (it refreshes with the data), with attribution:
[](https://www.pairbook.io/pair/nsys-vs-podd/)
No key needed, free to use. Full endpoint list in the API documentation.
Related comparisons
Hubs: NSYS correlations · PODD correlations
