Spire Inc (SR)
Spire Inc. engages in the purchase, retail distribution, and sale of natural gas to residential, commercial, industrial, and other end-users of natural gas in the United States. The company is headquartered in St. Louis, Missouri.
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 30.91% per annum.
- SR price at the close of May 7, 2025 was $76.11 and was inside the primary price channel.
- The secondary trend is increasing.
- The growth rate of the secondary trend is 60.51% per annum.
- SR price at the close of May 7, 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 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 16, 2024
End date: May 7, 2025
a = 2.9877
b = 0.0007
s = 0.0324
Annual growth rate:
Exp(365 × b) – 1
= Exp(365 × 0.0007) – 1
= 30.91%
Price channel spread:
Exp(4 × s) – 1
= Exp(4 × 0.0324) – 1
= 13.84%
January 16, 2024 calculations
Top border of price channel:
Exp(Y927)
= Exp(a + b × X927 + 2 × s)
= Exp(a + b × 1,348 + 2 × s)
= Exp(2.9877 + 0.0007 × 1,348 + 2 × 0.0324)
= Exp(4.0472)
= $57.24
Bottom border of price channel:
Exp(Y927)
= Exp(a + b × X927 – 2 × s)
= Exp(a + b × 1,348 – 2 × s)
= Exp(2.9877 + 0.0007 × 1,348 – 2 × 0.0324)
= Exp(3.9175)
= $50.28
May 7, 2025 calculations
Top border of price channel:
Exp(Y1,255)
= Exp(a + b × X1,255 + 2 × s)
= Exp(a + b × 1,825 + 2 × s)
= Exp(2.9877 + 0.0007 × 1,825 + 2 × 0.0324)
= Exp(4.3992)
= $81.38
Bottom border of price channel:
Exp(Y1,255)
= Exp(a + b × X1,255 – 2 × s)
= Exp(a + b × 1,825 – 2 × s)
= Exp(2.9877 + 0.0007 × 1,825 – 2 × 0.0324)
= Exp(4.2695)
= $71.49
Description
- The primary trend is increasing.
- The growth rate of the primary trend is 30.91% per annum.
- SR price at the close of May 7, 2025 was $76.11 and was inside the primary price channel.
Secondary Trend
Start date: December 12, 2024
End date: May 7, 2025
a = 2.0129
b = 0.0013
s = 0.0251
Annual growth rate:
Exp(365 × b) – 1
= Exp(365 × 0.0013) – 1
= 60.51%
Price channel spread:
Exp(4 × s) – 1
= Exp(4 × 0.0251) – 1
= 10.54%
December 12, 2024 calculations
Top border of price channel:
Exp(Y1,157)
= Exp(a + b × X1,157 + 2 × s)
= Exp(a + b × 1,679 + 2 × s)
= Exp(2.0129 + 0.0013 × 1,679 + 2 × 0.0251)
= Exp(4.2396)
= $69.38
Bottom border of price channel:
Exp(Y1,157)
= Exp(a + b × X1,157 – 2 × s)
= Exp(a + b × 1,679 – 2 × s)
= Exp(2.0129 + 0.0013 × 1,679 – 2 × 0.0251)
= Exp(4.1394)
= $62.77
May 7, 2025 calculations
Top border of price channel:
Exp(Y1,255)
= Exp(a + b × X1,255 + 2 × s)
= Exp(a + b × 1,825 + 2 × s)
= Exp(2.0129 + 0.0013 × 1,825 + 2 × 0.0251)
= Exp(4.4289)
= $83.84
Bottom border of price channel:
Exp(Y1,255)
= Exp(a + b × X1,255 – 2 × s)
= Exp(a + b × 1,825 – 2 × s)
= Exp(2.0129 + 0.0013 × 1,825 – 2 × 0.0251)
= Exp(4.3287)
= $75.84
Description
- The secondary trend is increasing.
- The growth rate of the secondary trend is 60.51% per annum.
- SR price at the close of May 7, 2025 was inside the secondary price channel.