Alphabet Inc Class A (GOOGL)
Alphabet Inc. is an American multinational conglomerate headquartered in Mountain View, California. It was created through a restructuring of Google on October 2, 2015, and became the parent company of Google and several former Google subsidiaries. The two co-founders of Google remained as controlling shareholders, board members, and employees at Alphabet. Alphabet is the world's fourth-largest technology company by revenue and one of the world's most valuable companies.
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 178.88% per annum.
- GOOGL price at the close of October 16, 2025 was $251.46 and was inside the primary price channel.
- The secondary trend is decreasing.
- The decline rate of the secondary trend is 26.87% per annum.
- GOOGL price at the close of October 16, 2025 was inside the secondary price channel.
- 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 GOOGL 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: April 3, 2025
End date: October 16, 2025
a = 0.3949
b = 0.0028
s = 0.0437
Annual growth rate:
Exp(365 × b) – 1
= Exp(365 × 0.0028) – 1
= 178.88%
Price channel spread:
Exp(4 × s) – 1
= Exp(4 × 0.0437) – 1
= 19.08%
April 3, 2025 calculations
Top border of price channel:
Exp(Y1,119)
= Exp(a + b × X1,119 + 2 × s)
= Exp(a + b × 1,627 + 2 × s)
= Exp(0.3949 + 0.0028 × 1,627 + 2 × 0.0437)
= Exp(5.0539)
= $156.64
Bottom border of price channel:
Exp(Y1,119)
= Exp(a + b × X1,119 – 2 × s)
= Exp(a + b × 1,627 – 2 × s)
= Exp(0.3949 + 0.0028 × 1,627 – 2 × 0.0437)
= Exp(4.8793)
= $131.53
October 16, 2025 calculations
Top border of price channel:
Exp(Y1,254)
= Exp(a + b × X1,254 + 2 × s)
= Exp(a + b × 1,823 + 2 × s)
= Exp(0.3949 + 0.0028 × 1,823 + 2 × 0.0437)
= Exp(5.6047)
= $271.69
Bottom border of price channel:
Exp(Y1,254)
= Exp(a + b × X1,254 – 2 × s)
= Exp(a + b × 1,823 – 2 × s)
= Exp(0.3949 + 0.0028 × 1,823 – 2 × 0.0437)
= Exp(5.4300)
= $228.15
Description
- The primary trend is increasing.
- The growth rate of the primary trend is 178.88% per annum.
- GOOGL price at the close of October 16, 2025 was $251.46 and was inside the primary price channel.
Secondary Trend
Start date: September 15, 2025
End date: October 16, 2025
a = 7.0599
b = -0.0009
s = 0.0154
Annual growth rate:
Exp(365 × b) – 1
= Exp(365 × -0.0009) – 1
= -26.87%
Price channel spread:
Exp(4 × s) – 1
= Exp(4 × 0.0154) – 1
= 6.36%
September 15, 2025 calculations
Top border of price channel:
Exp(Y1,231)
= Exp(a + b × X1,231 + 2 × s)
= Exp(a + b × 1,792 + 2 × s)
= Exp(7.0599 + -0.0009 × 1,792 + 2 × 0.0154)
= Exp(5.5547)
= $258.46
Bottom border of price channel:
Exp(Y1,231)
= Exp(a + b × X1,231 – 2 × s)
= Exp(a + b × 1,792 – 2 × s)
= Exp(7.0599 + -0.0009 × 1,792 – 2 × 0.0154)
= Exp(5.4930)
= $242.99
October 16, 2025 calculations
Top border of price channel:
Exp(Y1,254)
= Exp(a + b × X1,254 + 2 × s)
= Exp(a + b × 1,823 + 2 × s)
= Exp(7.0599 + -0.0009 × 1,823 + 2 × 0.0154)
= Exp(5.5281)
= $251.68
Bottom border of price channel:
Exp(Y1,254)
= Exp(a + b × X1,254 – 2 × s)
= Exp(a + b × 1,823 – 2 × s)
= Exp(7.0599 + -0.0009 × 1,823 – 2 × 0.0154)
= Exp(5.4665)
= $236.62
Description
- The secondary trend is decreasing.
- The decline rate of the secondary trend is 26.87% per annum.
- GOOGL price at the close of October 16, 2025 was inside the secondary price channel.