Gibraltar Industries Inc (ROCK)
Gibraltar Industries, Inc. (ROCK) is a diversified manufacturer and distributor of innovative construction products, catering primarily to the renewable energy, conservation, residential, and infrastructure sectors across North America and Asia. Headquartered in Buffalo, New York, the company leverages its extensive industry expertise and advanced engineering capabilities to deliver sustainable solutions that enhance both efficiency and environmental stewardship. With a strategic focus on growth through technological advancements and market expansion, Gibraltar positions itself as a key player in the evolving landscape of construction and renewable energy.
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 20.98% per annum.
- ROCK price at the close of January 23, 2026 was $51.78 and was inside the primary price channel.
- The secondary trend is decreasing.
- The decline rate of the secondary trend is 12.91% per annum.
- ROCK price at the close of January 23, 2026 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 ROCK 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: December 14, 2023
End date: July 1, 2025
a = 5.0826
b = -0.0006
s = 0.0582
Annual growth rate:
Exp(365 × b) – 1
= Exp(365 × -0.0006) – 1
= -20.98%
Price channel spread:
Exp(4 × s) – 1
= Exp(4 × 0.0582) – 1
= 26.23%
December 14, 2023 calculations
Top border of price channel:
Exp(Y727)
= Exp(a + b × X727 + 2 × s)
= Exp(a + b × 1,052 + 2 × s)
= Exp(5.0826 + -0.0006 × 1,052 + 2 × 0.0582)
= Exp(4.5205)
= $91.88
Bottom border of price channel:
Exp(Y727)
= Exp(a + b × X727 – 2 × s)
= Exp(a + b × 1,052 – 2 × s)
= Exp(5.0826 + -0.0006 × 1,052 – 2 × 0.0582)
= Exp(4.2876)
= $72.79
July 1, 2025 calculations
Top border of price channel:
Exp(Y1,112)
= Exp(a + b × X1,112 + 2 × s)
= Exp(a + b × 1,617 + 2 × s)
= Exp(5.0826 + -0.0006 × 1,617 + 2 × 0.0582)
= Exp(4.1561)
= $63.82
Bottom border of price channel:
Exp(Y1,112)
= Exp(a + b × X1,112 – 2 × s)
= Exp(a + b × 1,617 – 2 × s)
= Exp(5.0826 + -0.0006 × 1,617 – 2 × 0.0582)
= Exp(3.9232)
= $50.56
Description
- The primary trend is decreasing.
- The decline rate of the primary trend is 20.98% per annum.
- ROCK price at the close of January 23, 2026 was $51.78 and was inside the primary price channel.
Secondary Trend
Start date: February 21, 2024
End date: November 14, 2025
a = 4.7318
b = -0.0004
s = 0.0713
Annual growth rate:
Exp(365 × b) – 1
= Exp(365 × -0.0004) – 1
= -12.91%
Price channel spread:
Exp(4 × s) – 1
= Exp(4 × 0.0713) – 1
= 33.01%
February 21, 2024 calculations
Top border of price channel:
Exp(Y772)
= Exp(a + b × X772 + 2 × s)
= Exp(a + b × 1,121 + 2 × s)
= Exp(4.7318 + -0.0004 × 1,121 + 2 × 0.0713)
= Exp(4.4500)
= $85.63
Bottom border of price channel:
Exp(Y772)
= Exp(a + b × X772 – 2 × s)
= Exp(a + b × 1,121 – 2 × s)
= Exp(4.7318 + -0.0004 × 1,121 – 2 × 0.0713)
= Exp(4.1647)
= $64.37
November 14, 2025 calculations
Top border of price channel:
Exp(Y1,208)
= Exp(a + b × X1,208 + 2 × s)
= Exp(a + b × 1,753 + 2 × s)
= Exp(4.7318 + -0.0004 × 1,753 + 2 × 0.0713)
= Exp(4.2107)
= $67.40
Bottom border of price channel:
Exp(Y1,208)
= Exp(a + b × X1,208 – 2 × s)
= Exp(a + b × 1,753 – 2 × s)
= Exp(4.7318 + -0.0004 × 1,753 – 2 × 0.0713)
= Exp(3.9254)
= $50.67
Description
- The secondary trend is decreasing.
- The decline rate of the secondary trend is 12.91% per annum.
- ROCK price at the close of January 23, 2026 was inside the secondary price channel.