Pfizer Inc (PFE)
Pfizer Inc. is an American multinational pharmaceutical and biotechnology corporation headquartered on 42nd Street in Manhattan, New York City. The name of the company commemorates its co-founder, Charles Pfizer (1824-1906). Pfizer develops and produces medicines and vaccines for immunology, oncology, cardiology, endocrinology, and neurology. The company has several blockbuster drugs or products that each generate more than 1 billion USD in annual revenues.
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 23.77% per annum.
- PFE price at the close of October 3, 2025 was $27.37 and was higher than the top border of the primary price channel by $7.61 (38.50%). This indicates a possible reversal in the primary trend direction.
- The secondary trend is decreasing.
- The decline rate of the secondary trend is 4.56% per annum.
- PFE price at the close of October 3, 2025 was higher than the top border of the secondary price channel by $0.56 (2.08%). This indicates a possible reversal in the secondary trend direction.
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 PFE 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: November 17, 2021
End date: July 10, 2024
a = 4.1979
b = -0.0007
s = 0.0710
Annual growth rate:
Exp(365 × b) – 1
= Exp(365 × -0.0007) – 1
= -23.77%
Price channel spread:
Exp(4 × s) – 1
= Exp(4 × 0.0710) – 1
= 32.84%
November 17, 2021 calculations
Top border of price channel:
Exp(Y283)
= Exp(a + b × X283 + 2 × s)
= Exp(a + b × 408 + 2 × s)
= Exp(4.1979 + -0.0007 × 408 + 2 × 0.0710)
= Exp(4.0365)
= $56.63
Bottom border of price channel:
Exp(Y283)
= Exp(a + b × X283 – 2 × s)
= Exp(a + b × 408 – 2 × s)
= Exp(4.1979 + -0.0007 × 408 – 2 × 0.0710)
= Exp(3.7526)
= $42.63
July 10, 2024 calculations
Top border of price channel:
Exp(Y945)
= Exp(a + b × X945 + 2 × s)
= Exp(a + b × 1,374 + 2 × s)
= Exp(4.1979 + -0.0007 × 1,374 + 2 × 0.0710)
= Exp(3.3183)
= $27.61
Bottom border of price channel:
Exp(Y945)
= Exp(a + b × X945 – 2 × s)
= Exp(a + b × 1,374 – 2 × s)
= Exp(4.1979 + -0.0007 × 1,374 – 2 × 0.0710)
= Exp(3.0344)
= $20.79
Description
- The primary trend is decreasing.
- The decline rate of the primary trend is 23.77% per annum.
- PFE price at the close of October 3, 2025 was $27.37 and was higher than the top border of the primary price channel by $7.61 (38.50%). This indicates a possible reversal in the primary trend direction.
Secondary Trend
Start date: October 18, 2023
End date: October 3, 2025
a = 3.4128
b = -0.0001
s = 0.0545
Annual growth rate:
Exp(365 × b) – 1
= Exp(365 × -0.0001) – 1
= -4.56%
Price channel spread:
Exp(4 × s) – 1
= Exp(4 × 0.0545) – 1
= 24.36%
October 18, 2023 calculations
Top border of price channel:
Exp(Y764)
= Exp(a + b × X764 + 2 × s)
= Exp(a + b × 1,108 + 2 × s)
= Exp(3.4128 + -0.0001 × 1,108 + 2 × 0.0545)
= Exp(3.3803)
= $29.38
Bottom border of price channel:
Exp(Y764)
= Exp(a + b × X764 – 2 × s)
= Exp(a + b × 1,108 – 2 × s)
= Exp(3.4128 + -0.0001 × 1,108 – 2 × 0.0545)
= Exp(3.1623)
= $23.62
October 3, 2025 calculations
Top border of price channel:
Exp(Y1,255)
= Exp(a + b × X1,255 + 2 × s)
= Exp(a + b × 1,824 + 2 × s)
= Exp(3.4128 + -0.0001 × 1,824 + 2 × 0.0545)
= Exp(3.2889)
= $26.81
Bottom border of price channel:
Exp(Y1,255)
= Exp(a + b × X1,255 – 2 × s)
= Exp(a + b × 1,824 – 2 × s)
= Exp(3.4128 + -0.0001 × 1,824 – 2 × 0.0545)
= Exp(3.0708)
= $21.56
Description
- The secondary trend is decreasing.
- The decline rate of the secondary trend is 4.56% per annum.
- PFE price at the close of October 3, 2025 was higher than the top border of the secondary price channel by $0.56 (2.08%). This indicates a possible reversal in the secondary trend direction.