Stock Price Trends

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 decreasing.
  • The decline rate of the primary trend is 8.69% per annum.
  • SR price at the close of July 25, 2024 was $67.13 and was higher than the top border of the primary price channel by $6.34 (10.43%). This indicates a possible reversal in the primary trend direction.
  • The secondary trend is increasing.
  • The growth rate of the secondary trend is 10.56% per annum.
  • SR price at the close of July 25, 2024 was higher than the top border of the secondary price channel by $1.30 (1.98%).
  • The direction of the secondary trend is opposite to the direction of the primary trend. This indicates a possible reversal in the direction of the primary trend.

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: March 30, 2022
End date: April 18, 2024

a = 4.4687

b = -0.0002

s = 0.0468

Annual growth rate:

Exp(365 × b) – 1
= Exp(365 × -0.0002) – 1
= -8.69%

Price channel spread:

Exp(4 × s) – 1
= Exp(4 × 0.0468) – 1
= 20.61%

March 30, 2022 calculations

Top border of price channel:

Exp(Y675)
= Exp(a + b × X675 + 2 × s)
= Exp(a + b × 978 + 2 × s)
= Exp(4.4687 + -0.0002 × 978 + 2 × 0.0468)
= Exp(4.3187)
= $75.09

Bottom border of price channel:

Exp(Y675)
= Exp(a + b × X675 – 2 × s)
= Exp(a + b × 978 – 2 × s)
= Exp(4.4687 + -0.0002 × 978 – 2 × 0.0468)
= Exp(4.1314)
= $62.26

April 18, 2024 calculations

Top border of price channel:

Exp(Y1,190)
= Exp(a + b × X1,190 + 2 × s)
= Exp(a + b × 1,728 + 2 × s)
= Exp(4.4687 + -0.0002 × 1,728 + 2 × 0.0468)
= Exp(4.1319)
= $62.29

Bottom border of price channel:

Exp(Y1,190)
= Exp(a + b × X1,190 – 2 × s)
= Exp(a + b × 1,728 – 2 × s)
= Exp(4.4687 + -0.0002 × 1,728 – 2 × 0.0468)
= Exp(3.9445)
= $51.65

Description

  • The primary trend is decreasing.
  • The decline rate of the primary trend is 8.69% per annum.
  • SR price at the close of July 25, 2024 was $67.13 and was higher than the top border of the primary price channel by $6.34 (10.43%). This indicates a possible reversal in the primary trend direction.

Secondary Trend

Start date: August 3, 2023
End date: July 25, 2024

a = 3.6169

b = 0.0003

s = 0.0340

Annual growth rate:

Exp(365 × b) – 1
= Exp(365 × 0.0003) – 1
= 10.56%

Price channel spread:

Exp(4 × s) – 1
= Exp(4 × 0.0340) – 1
= 14.55%

August 3, 2023 calculations

Top border of price channel:

Exp(Y1,012)
= Exp(a + b × X1,012 + 2 × s)
= Exp(a + b × 1,469 + 2 × s)
= Exp(3.6169 + 0.0003 × 1,469 + 2 × 0.0340)
= Exp(4.0888)
= $59.67

Bottom border of price channel:

Exp(Y1,012)
= Exp(a + b × X1,012 – 2 × s)
= Exp(a + b × 1,469 – 2 × s)
= Exp(3.6169 + 0.0003 × 1,469 – 2 × 0.0340)
= Exp(3.9530)
= $52.09

July 25, 2024 calculations

Top border of price channel:

Exp(Y1,257)
= Exp(a + b × X1,257 + 2 × s)
= Exp(a + b × 1,826 + 2 × s)
= Exp(3.6169 + 0.0003 × 1,826 + 2 × 0.0340)
= Exp(4.1870)
= $65.83

Bottom border of price channel:

Exp(Y1,257)
= Exp(a + b × X1,257 – 2 × s)
= Exp(a + b × 1,826 – 2 × s)
= Exp(3.6169 + 0.0003 × 1,826 – 2 × 0.0340)
= Exp(4.0512)
= $57.46

Description

  • The secondary trend is increasing.
  • The growth rate of the secondary trend is 10.56% per annum.
  • SR price at the close of July 25, 2024 was higher than the top border of the secondary price channel by $1.30 (1.98%).