KRRO vs NSSC: Correlation
Korro Bio, Inc. (KRRO) and NAPCO Security Technologies, Inc. (NSSC) show a moderate relationship: their 3-year correlation of weekly returns is 0.41.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are KRRO and NSSC?
On 3 years of weekly data the KRRO/NSSC correlation comes out at 0.41, moderate. The relationship has been stable: the 1-year correlation (0.33) sits close to the 3-year figure. The 5-year figure is 0.31, and annualized covariance runs at 3541.7 %².
Among the 16 assets we track against KRRO, NSSC ranks #5 by 3-year correlation. Their recent paths diverged sharply: over the last 12 months NSSC outperformed by 31.8 percentage points (-38.6% for KRRO against -6.8% for NSSC). One caveat on sizing: KRRO is 3.2 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.
KRRO vs NSSC: side by side
| KRRO (Korro Bio, Inc.) | NSSC (NAPCO Security Technologies, Inc.) | |
|---|---|---|
| 1-year return | -38.6% | -6.8% |
| 5-year return | -96.6% | +91.1% |
| Volatility (ann.) | 166.3% | 51.3% |
| Beta vs S&P 500 | 3.17 | 1.46 |
| Max drawdown (3Y) | -94.1% | -65.4% |
| Market cap | $0.2B | $1.3B |
| P/E (trailing) | – | 29.6 |
| Dividend yield | 0.00% | 1.62% |
| Sector / category | US Listed | US Listed |
Year-by-year returns
| Year | KRRO | NSSC |
|---|---|---|
| 2022 | -25.0% | +10.0% |
| 2023 | -75.1% | +25.6% |
| 2024 | -20.6% | +5.0% |
| 2025 | -79.0% | +19.2% |
| 2026 | +65.5% | -14.7% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are KRRO and NSSC 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 KRRO and NSSC?
As of 2026-08-27, the correlation of weekly returns between KRRO and NSSC is 0.41 over 3 years, 0.33 over 1 year and 0.31 over 5 years.
Is NSSC a good diversifier for KRRO?
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?
A reading of 0.41 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/krro-vs-nssc.json
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Related comparisons
Hubs: KRRO correlations · NSSC correlations
