Spire Inc (SR)
Spire Inc. is a leading natural gas utility company headquartered in St. Louis, Missouri, primarily involved in the procurement, distribution, and retail sale of natural gas to a diverse customer base that includes residential, commercial, and industrial users across the United States. With a strong commitment to sustainability and operational efficiency, Spire serves millions of customers while actively pursuing innovative solutions to enhance energy reliability and reduce environmental impact. The company strategically focuses on expanding its infrastructure and service offerings to meet the evolving energy needs of its communities, positioning itself for long-term growth in the energy sector.
Stock Price Trends
Stock price trends estimated using linear regression.
Key facts
- The primary trend is increasing.
- The growth rate of the primary trend is 27.88% per annum.
- SR price at the close of March 27, 2026 was $90.68 and was inside the primary price channel.
- The secondary trend is increasing.
- The growth rate of the secondary trend is 82.42% per annum.
- SR price at the close of March 27, 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 SR 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: January 11, 2024
End date: March 27, 2026
a = 3.2631
b = 0.0007
s = 0.0357
Annual growth rate:
Exp(365 × b) – 1
= Exp(365 × 0.0007) – 1
= 27.88%
Price channel spread:
Exp(4 × s) – 1
= Exp(4 × 0.0357) – 1
= 15.37%
January 11, 2024 calculations
Top border of price channel:
Exp(Y702)
= Exp(a + b × X702 + 2 × s)
= Exp(a + b × 1,018 + 2 × s)
= Exp(3.2631 + 0.0007 × 1,018 + 2 × 0.0357)
= Exp(4.0205)
= $55.73
Bottom border of price channel:
Exp(Y702)
= Exp(a + b × X702 – 2 × s)
= Exp(a + b × 1,018 – 2 × s)
= Exp(3.2631 + 0.0007 × 1,018 – 2 × 0.0357)
= Exp(3.8775)
= $48.31
March 27, 2026 calculations
Top border of price channel:
Exp(Y1,255)
= Exp(a + b × X1,255 + 2 × s)
= Exp(a + b × 1,824 + 2 × s)
= Exp(3.2631 + 0.0007 × 1,824 + 2 × 0.0357)
= Exp(4.5636)
= $95.93
Bottom border of price channel:
Exp(Y1,255)
= Exp(a + b × X1,255 – 2 × s)
= Exp(a + b × 1,824 – 2 × s)
= Exp(3.2631 + 0.0007 × 1,824 – 2 × 0.0357)
= Exp(4.4206)
= $83.15
Description
- The primary trend is increasing.
- The growth rate of the primary trend is 27.88% per annum.
- SR price at the close of March 27, 2026 was $90.68 and was inside the primary price channel.
Secondary Trend
Start date: December 31, 2025
End date: March 27, 2026
a = 1.5286
b = 0.0016
s = 0.0171
Annual growth rate:
Exp(365 × b) – 1
= Exp(365 × 0.0016) – 1
= 82.42%
Price channel spread:
Exp(4 × s) – 1
= Exp(4 × 0.0171) – 1
= 7.06%
December 31, 2025 calculations
Top border of price channel:
Exp(Y1,196)
= Exp(a + b × X1,196 + 2 × s)
= Exp(a + b × 1,738 + 2 × s)
= Exp(1.5286 + 0.0016 × 1,738 + 2 × 0.0171)
= Exp(4.4252)
= $83.53
Bottom border of price channel:
Exp(Y1,196)
= Exp(a + b × X1,196 – 2 × s)
= Exp(a + b × 1,738 – 2 × s)
= Exp(1.5286 + 0.0016 × 1,738 – 2 × 0.0171)
= Exp(4.3570)
= $78.02
March 27, 2026 calculations
Top border of price channel:
Exp(Y1,255)
= Exp(a + b × X1,255 + 2 × s)
= Exp(a + b × 1,824 + 2 × s)
= Exp(1.5286 + 0.0016 × 1,824 + 2 × 0.0171)
= Exp(4.5668)
= $96.24
Bottom border of price channel:
Exp(Y1,255)
= Exp(a + b × X1,255 – 2 × s)
= Exp(a + b × 1,824 – 2 × s)
= Exp(1.5286 + 0.0016 × 1,824 – 2 × 0.0171)
= Exp(4.4986)
= $89.89
Description
- The secondary trend is increasing.
- The growth rate of the secondary trend is 82.42% per annum.
- SR price at the close of March 27, 2026 was inside the secondary price channel.