Stock Price Trends

Brunswick Corporation (BC)

Brunswick Corporation designs, manufactures and markets recreational products worldwide. The company is headquartered in Mettawa, Illinois.

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 56.86% per annum.
  • BC price at the close of April 28, 2025 was $46.50 and was lower than the bottom border of the primary price channel by $1.82 (3.77%).
  • The secondary trend is decreasing.
  • The decline rate of the secondary trend is 84.54% per annum.
  • BC price at the close of April 28, 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 BC 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: September 26, 2024
End date: April 2, 2025

a = 8.1712

b = -0.0023

s = 0.0446

Annual growth rate:

Exp(365 × b) – 1
= Exp(365 × -0.0023) – 1
= -56.86%

Price channel spread:

Exp(4 × s) – 1
= Exp(4 × 0.0446) – 1
= 19.52%

September 26, 2024 calculations

Top border of price channel:

Exp(Y1,110)
= Exp(a + b × X1,110 + 2 × s)
= Exp(a + b × 1,611 + 2 × s)
= Exp(8.1712 + -0.0023 × 1,611 + 2 × 0.0446)
= Exp(4.5492)
= $94.55

Bottom border of price channel:

Exp(Y1,110)
= Exp(a + b × X1,110 – 2 × s)
= Exp(a + b × 1,611 – 2 × s)
= Exp(8.1712 + -0.0023 × 1,611 – 2 × 0.0446)
= Exp(4.3708)
= $79.11

April 2, 2025 calculations

Top border of price channel:

Exp(Y1,238)
= Exp(a + b × X1,238 + 2 × s)
= Exp(a + b × 1,799 + 2 × s)
= Exp(8.1712 + -0.0023 × 1,799 + 2 × 0.0446)
= Exp(4.1161)
= $61.32

Bottom border of price channel:

Exp(Y1,238)
= Exp(a + b × X1,238 – 2 × s)
= Exp(a + b × 1,799 – 2 × s)
= Exp(8.1712 + -0.0023 × 1,799 – 2 × 0.0446)
= Exp(3.9378)
= $51.30

Description

  • The primary trend is decreasing.
  • The decline rate of the primary trend is 56.86% per annum.
  • BC price at the close of April 28, 2025 was $46.50 and was lower than the bottom border of the primary price channel by $1.82 (3.77%).

Secondary Trend

Start date: January 23, 2025
End date: April 28, 2025

a = 13.1231

b = -0.0051

s = 0.0510

Annual growth rate:

Exp(365 × b) – 1
= Exp(365 × -0.0051) – 1
= -84.54%

Price channel spread:

Exp(4 × s) – 1
= Exp(4 × 0.0510) – 1
= 22.65%

January 23, 2025 calculations

Top border of price channel:

Exp(Y1,190)
= Exp(a + b × X1,190 + 2 × s)
= Exp(a + b × 1,730 + 2 × s)
= Exp(13.1231 + -0.0051 × 1,730 + 2 × 0.0510)
= Exp(4.3772)
= $79.61

Bottom border of price channel:

Exp(Y1,190)
= Exp(a + b × X1,190 – 2 × s)
= Exp(a + b × 1,730 – 2 × s)
= Exp(13.1231 + -0.0051 × 1,730 – 2 × 0.0510)
= Exp(4.1730)
= $64.91

April 28, 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(13.1231 + -0.0051 × 1,825 + 2 × 0.0510)
= Exp(3.8913)
= $48.98

Bottom border of price channel:

Exp(Y1,255)
= Exp(a + b × X1,255 – 2 × s)
= Exp(a + b × 1,825 – 2 × s)
= Exp(13.1231 + -0.0051 × 1,825 – 2 × 0.0510)
= Exp(3.6871)
= $39.93

Description

  • The secondary trend is decreasing.
  • The decline rate of the secondary trend is 84.54% per annum.
  • BC price at the close of April 28, 2025 was inside the secondary price channel.