Qualys Inc (QLYS)
Qualys, Inc. is a leading provider of cloud-based information technology (IT) security and compliance solutions, empowering organizations worldwide to manage and secure their IT assets. Headquartered in Foster City, California, the company offers a comprehensive suite of services that includes vulnerability management, threat detection, and compliance monitoring, enabling clients to proactively mitigate risks in their digital environments. With a robust platform that leverages cloud technology, Qualys continuously innovates to meet the evolving security needs of businesses across various industries, making it an essential partner in today's cybersecurity landscape.
Stock Price Trends
Stock price trends estimated using linear regression.
Key facts
- The primary trend is decreasing.
- The decline rate of the primary trend is 14.88% per annum.
- QLYS price at the close of October 16, 2025 was $127.56 and was inside the primary price channel.
- The secondary trend is decreasing.
- The decline rate of the secondary trend is 0.83% per annum.
- QLYS price at the close of October 16, 2025 was inside the secondary price channel.
Linear Regression Model
Model equation:
Yi = α + β × Xi + εi
Top border of price channel:
Exp(Yi) = Exp(a + b × Xi + 2 × s)
Bottom border of price channel:
Exp(Yi) = Exp(a + b × Xi – 2 × s)
where:
i - observation number
Yi - natural logarithm of QLYS price
Xi - time index, 1 day interval
σ - standard deviation of εi
a - estimator of α
b - estimator of β
s - estimator of σ
Exp() - calculates the exponent of e
Primary Trend
Start date: October 4, 2023
End date: October 16, 2025
a = 5.6202
b = -0.0004
s = 0.0957
Annual growth rate:
Exp(365 × b) – 1
= Exp(365 × -0.0004) – 1
= -14.88%
Price channel spread:
Exp(4 × s) – 1
= Exp(4 × 0.0957) – 1
= 46.63%
October 4, 2023 calculations
Top border of price channel:
Exp(Y744)
= Exp(a + b × X744 + 2 × s)
= Exp(a + b × 1,080 + 2 × s)
= Exp(5.6202 + -0.0004 × 1,080 + 2 × 0.0957)
= Exp(5.3349)
= $207.45
Bottom border of price channel:
Exp(Y744)
= Exp(a + b × X744 – 2 × s)
= Exp(a + b × 1,080 – 2 × s)
= Exp(5.6202 + -0.0004 × 1,080 – 2 × 0.0957)
= Exp(4.9521)
= $141.48
October 16, 2025 calculations
Top border of price channel:
Exp(Y1,254)
= Exp(a + b × X1,254 + 2 × s)
= Exp(a + b × 1,823 + 2 × s)
= Exp(5.6202 + -0.0004 × 1,823 + 2 × 0.0957)
= Exp(5.0069)
= $149.44
Bottom border of price channel:
Exp(Y1,254)
= Exp(a + b × X1,254 – 2 × s)
= Exp(a + b × 1,823 – 2 × s)
= Exp(5.6202 + -0.0004 × 1,823 – 2 × 0.0957)
= Exp(4.6242)
= $101.92
Description
- The primary trend is decreasing.
- The decline rate of the primary trend is 14.88% per annum.
- QLYS price at the close of October 16, 2025 was $127.56 and was inside the primary price channel.
Secondary Trend
Start date: May 28, 2024
End date: October 16, 2025
a = 4.9381
b = 0.0000
s = 0.0668
Annual growth rate:
Exp(365 × b) – 1
= Exp(365 × 0.0000) – 1
= -0.83%
Price channel spread:
Exp(4 × s) – 1
= Exp(4 × 0.0668) – 1
= 30.64%
May 28, 2024 calculations
Top border of price channel:
Exp(Y906)
= Exp(a + b × X906 + 2 × s)
= Exp(a + b × 1,317 + 2 × s)
= Exp(4.9381 + 0.0000 × 1,317 + 2 × 0.0668)
= Exp(5.0417)
= $154.73
Bottom border of price channel:
Exp(Y906)
= Exp(a + b × X906 – 2 × s)
= Exp(a + b × 1,317 – 2 × s)
= Exp(4.9381 + 0.0000 × 1,317 – 2 × 0.0668)
= Exp(4.7744)
= $118.44
October 16, 2025 calculations
Top border of price channel:
Exp(Y1,254)
= Exp(a + b × X1,254 + 2 × s)
= Exp(a + b × 1,823 + 2 × s)
= Exp(4.9381 + 0.0000 × 1,823 + 2 × 0.0668)
= Exp(5.0302)
= $152.96
Bottom border of price channel:
Exp(Y1,254)
= Exp(a + b × X1,254 – 2 × s)
= Exp(a + b × 1,823 – 2 × s)
= Exp(4.9381 + 0.0000 × 1,823 – 2 × 0.0668)
= Exp(4.7629)
= $117.08
Description
- The secondary trend is decreasing.
- The decline rate of the secondary trend is 0.83% per annum.
- QLYS price at the close of October 16, 2025 was inside the secondary price channel.