FA vs QLYS: Correlation
How closely do First Advantage Corporation (FA) and Qualys, Inc. (QLYS) trade together? Their weekly returns over three years give a correlation of 0.53, which is moderate.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are FA and QLYS?
Across a 3-year window, the weekly returns of FA and QLYS correlate at 0.53, moderate. Recent behaviour matches the longer record: 0.59 over 1 year against 0.53 over 3. Stretching to 5 years gives 0.52, with an annualized covariance of 1051.7 %².
QLYS is one of the assets that tracks FA most closely: it ranks #3 out of the 16 assets we track against FA. On 12-month performance QLYS holds a 13.0-point edge, +27.0% against +40.0%.
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.
FA vs QLYS: side by side
| FA (First Advantage Corporation) | QLYS (Qualys, Inc.) | |
|---|---|---|
| 1-year return | +27.0% | +40.0% |
| 5-year return | +6.1% | +62.5% |
| Volatility (ann.) | 45.8% | 43.5% |
| Beta vs S&P 500 | 1.18 | 1.09 |
| Max drawdown (3Y) | -55.9% | -63.0% |
| Market cap | $3.6B | $6.5B |
| P/E (trailing) | 139.5 | 30.7 |
| Dividend yield | 0.00% | 0.00% |
| Sector / category | US Listed | US Listed |
Year-by-year returns
| Year | FA | QLYS |
|---|---|---|
| 2022 | -31.7% | -18.2% |
| 2023 | +41.5% | +74.9% |
| 2024 | +13.0% | -28.6% |
| 2025 | -22.4% | -5.2% |
| 2026 | +44.0% | +41.9% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are FA and QLYS good diversifiers for each other?
Only partially. A correlation of 0.53 means FA and QLYS share most of their swings. Pairing them dampens volatility somewhat, but it will not protect against a common drawdown.
FAQ
What is the correlation between FA and QLYS?
The FA/QLYS correlation stands at 0.53 on a 3-year window (1 year: 0.59, 5 years: 0.52), computed from weekly returns as of 2026-08-27.
Is QLYS a good diversifier for FA?
Only partially. A correlation of 0.53 means FA and QLYS share most of their swings. Pairing them dampens volatility somewhat, but it will not protect against a common drawdown.
What does a correlation of 0.53 mean?
On the −1 to +1 scale, 0.53 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/fa-vs-qlys.json
Markdown for the live badge, attribution link included:
[](https://www.pairbook.io/pair/fa-vs-qlys/)
The core API is free. Terms and every endpoint in the API documentation.
Related comparisons
Hubs: FA correlations · QLYS correlations
