NSSC vs QUAL: Correlation
NAPCO Security Technologies, Inc. (NSSC) and iShares MSCI USA Quality Factor ETF (QUAL) show a moderate relationship: their 3-year correlation of weekly returns is 0.44.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are NSSC and QUAL?
On 3 years of weekly data the NSSC/QUAL correlation comes out at 0.44, moderate. Little has changed lately, as the 1-year reading of 0.49 lands near the 3-year figure. The 5-year figure is 0.43, and annualized covariance runs at 318.6 %².
Among the 14 assets we track against NSSC, QUAL ranks #4 by 3-year correlation. Correlation aside, the last 12 months split them widely, with QUAL ahead by 26.5 points (-6.8% versus +19.7%). Note the risk asymmetry: NSSC runs 3.7 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.
NSSC vs QUAL: side by side
| NSSC (NAPCO Security Technologies, Inc.) | QUAL (iShares MSCI USA Quality Factor ETF) | |
|---|---|---|
| 1-year return | -6.8% | +19.7% |
| 5-year return | +91.1% | +68.0% |
| Volatility (ann.) | 51.3% | 14.0% |
| Beta vs S&P 500 | 1.46 | 0.93 |
| Max drawdown (3Y) | -65.4% | -18.0% |
| Market cap | $1.3B | – |
| P/E (trailing) | 29.6 | – |
| Dividend yield | 1.62% | 0.86% |
| Expense ratio | – | 0.15% |
| Assets under management | – | $46.5B |
| Sector / category | US Listed | ETF · US Style |
QUAL, iShares's Large Blend fund, carries $46.5B under management, 123 holdings, a 0.15% expense ratio, a 0.86% trailing dividend yield.
Year-by-year returns
| Year | NSSC | QUAL |
|---|---|---|
| 2022 | +10.0% | -20.5% |
| 2023 | +25.6% | +30.9% |
| 2024 | +5.0% | +22.3% |
| 2025 | +19.2% | +12.7% |
| 2026 | -14.7% | +13.5% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are NSSC and QUAL good diversifiers for each other?
A fair diversifier. At 0.44, enough of each asset's movement is its own that the pair has smoothed outcomes historically.
FAQ
What is the correlation between NSSC and QUAL?
As of 2026-08-27, the correlation of weekly returns between NSSC and QUAL is 0.44 over 3 years, 0.49 over 1 year and 0.43 over 5 years.
Is QUAL a good diversifier for NSSC?
A fair diversifier. At 0.44, enough of each asset's movement is its own that the pair has smoothed outcomes historically.
What does a correlation of 0.44 mean?
A reading of 0.44 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/nssc-vs-qual.json
Markdown for the live badge, attribution link included:
[](https://www.pairbook.io/pair/nssc-vs-qual/)
Free with attribution; caching and terms are described in the API documentation.
Related comparisons
Hubs: NSSC correlations · QUAL correlations
