Stock Price Trends
Stock price trends estimated using linear regression.
Summary
Key facts
- The primary trend is increasing.
- The growth rate of the primary trend is 6.10% per annum.
- SLB price at the close of November 4, 2026 was $51.56 and was inside the primary price channel.
- The secondary trend is increasing.
- The growth rate of the secondary trend is 331.82% per annum.
- SLB price at the close of November 4, 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 SLB 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 21, 2026
End date: November 4, 2026
a = 3.8826
b = 0.0002
s = 0.0653
Annual growth rate:
Exp(365 × b) – 1
= Exp(365 × 0.0002) – 1
= 6.10%
Price channel spread:
Exp(4 × s) – 1
= Exp(4 × 0.0653) – 1
= 29.82%
January 21, 2026 calculations
Top border of price channel:
Exp(Y117)
= Exp(a + b × X117 + 2 × s)
= Exp(a + b × 170 + 2 × s)
= Exp(3.8826 + 0.0002 × 170 + 2 × 0.0653)
= Exp(4.0406)
= $56.86
Bottom border of price channel:
Exp(Y117)
= Exp(a + b × X117 – 2 × s)
= Exp(a + b × 170 – 2 × s)
= Exp(3.8826 + 0.0002 × 170 – 2 × 0.0653)
= Exp(3.7796)
= $43.80
November 4, 2026 calculations
Top border of price channel:
Exp(Y316)
= Exp(a + b × X316 + 2 × s)
= Exp(a + b × 457 + 2 × s)
= Exp(3.8826 + 0.0002 × 457 + 2 × 0.0653)
= Exp(4.0872)
= $59.57
Bottom border of price channel:
Exp(Y316)
= Exp(a + b × X316 – 2 × s)
= Exp(a + b × 457 – 2 × s)
= Exp(3.8826 + 0.0002 × 457 – 2 × 0.0653)
= Exp(3.8262)
= $45.89
Description
- The primary trend is increasing.
- The growth rate of the primary trend is 6.10% per annum.
- SLB price at the close of November 4, 2026 was $51.56 and was inside the primary price channel.
Secondary Trend
Start date: October 7, 2026
End date: November 4, 2026
a = 2.1518
b = 0.0040
s = 0.0241
Annual growth rate:
Exp(365 × b) – 1
= Exp(365 × 0.0040) – 1
= 331.82%
Price channel spread:
Exp(4 × s) – 1
= Exp(4 × 0.0241) – 1
= 10.14%
October 7, 2026 calculations
Top border of price channel:
Exp(Y296)
= Exp(a + b × X296 + 2 × s)
= Exp(a + b × 429 + 2 × s)
= Exp(2.1518 + 0.0040 × 429 + 2 × 0.0241)
= Exp(3.9195)
= $50.37
Bottom border of price channel:
Exp(Y296)
= Exp(a + b × X296 – 2 × s)
= Exp(a + b × 429 – 2 × s)
= Exp(2.1518 + 0.0040 × 429 – 2 × 0.0241)
= Exp(3.8229)
= $45.74
November 4, 2026 calculations
Top border of price channel:
Exp(Y316)
= Exp(a + b × X316 + 2 × s)
= Exp(a + b × 457 + 2 × s)
= Exp(2.1518 + 0.0040 × 457 + 2 × 0.0241)
= Exp(4.0317)
= $56.35
Bottom border of price channel:
Exp(Y316)
= Exp(a + b × X316 – 2 × s)
= Exp(a + b × 457 – 2 × s)
= Exp(2.1518 + 0.0040 × 457 – 2 × 0.0241)
= Exp(3.9351)
= $51.17
Description
- The secondary trend is increasing.
- The growth rate of the secondary trend is 331.82% per annum.
- SLB price at the close of November 4, 2026 was inside the secondary price channel.