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 6.16% per annum.
- SLB price at the close of October 30, 2026 was $53.74 and was inside the primary price channel.
- The secondary trend is increasing.
- The growth rate of the secondary trend is 1,102.99% per annum.
- SLB price at the close of October 30, 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: October 30, 2026
a = 3.8821
b = 0.0002
s = 0.0657
Annual growth rate:
Exp(365 × b) – 1
= Exp(365 × 0.0002) – 1
= 6.16%
Price channel spread:
Exp(4 × s) – 1
= Exp(4 × 0.0657) – 1
= 30.08%
January 21, 2026 calculations
Top border of price channel:
Exp(Y117)
= Exp(a + b × X117 + 2 × s)
= Exp(a + b × 170 + 2 × s)
= Exp(3.8821 + 0.0002 × 170 + 2 × 0.0657)
= Exp(4.0415)
= $56.91
Bottom border of price channel:
Exp(Y117)
= Exp(a + b × X117 – 2 × s)
= Exp(a + b × 170 – 2 × s)
= Exp(3.8821 + 0.0002 × 170 – 2 × 0.0657)
= Exp(3.7785)
= $43.75
October 30, 2026 calculations
Top border of price channel:
Exp(Y313)
= Exp(a + b × X313 + 2 × s)
= Exp(a + b × 452 + 2 × s)
= Exp(3.8821 + 0.0002 × 452 + 2 × 0.0657)
= Exp(4.0877)
= $59.60
Bottom border of price channel:
Exp(Y313)
= Exp(a + b × X313 – 2 × s)
= Exp(a + b × 452 – 2 × s)
= Exp(3.8821 + 0.0002 × 452 – 2 × 0.0657)
= Exp(3.8247)
= $45.82
Description
- The primary trend is increasing.
- The growth rate of the primary trend is 6.16% per annum.
- SLB price at the close of October 30, 2026 was $53.74 and was inside the primary price channel.
Secondary Trend
Start date: October 12, 2026
End date: October 30, 2026
a = 0.9122
b = 0.0068
s = 0.0169
Annual growth rate:
Exp(365 × b) – 1
= Exp(365 × 0.0068) – 1
= 1,102.99%
Price channel spread:
Exp(4 × s) – 1
= Exp(4 × 0.0169) – 1
= 7.00%
October 12, 2026 calculations
Top border of price channel:
Exp(Y299)
= Exp(a + b × X299 + 2 × s)
= Exp(a + b × 434 + 2 × s)
= Exp(0.9122 + 0.0068 × 434 + 2 × 0.0169)
= Exp(3.9036)
= $49.58
Bottom border of price channel:
Exp(Y299)
= Exp(a + b × X299 – 2 × s)
= Exp(a + b × 434 – 2 × s)
= Exp(0.9122 + 0.0068 × 434 – 2 × 0.0169)
= Exp(3.8359)
= $46.34
October 30, 2026 calculations
Top border of price channel:
Exp(Y313)
= Exp(a + b × X313 + 2 × s)
= Exp(a + b × 452 + 2 × s)
= Exp(0.9122 + 0.0068 × 452 + 2 × 0.0169)
= Exp(4.0263)
= $56.05
Bottom border of price channel:
Exp(Y313)
= Exp(a + b × X313 – 2 × s)
= Exp(a + b × 452 – 2 × s)
= Exp(0.9122 + 0.0068 × 452 – 2 × 0.0169)
= Exp(3.9586)
= $52.38
Description
- The secondary trend is increasing.
- The growth rate of the secondary trend is 1,102.99% per annum.
- SLB price at the close of October 30, 2026 was inside the secondary price channel.