Penumbra Inc (PEN)
Penumbra, Inc. designs, develops, manufactures, and markets medical devices in the United States, Europe, Canada, Australia, and internationally. The company is headquartered in Alameda, California.
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 89.10% per annum.
- PEN price at the close of May 8, 2025 was $288.73 and was inside the primary price channel.
- The secondary trend is decreasing.
- The decline rate of the secondary trend is 57.96% per annum.
- PEN price at the close of May 8, 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 PEN 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: June 18, 2024
End date: May 8, 2025
a = 2.5350
b = 0.0017
s = 0.0532
Annual growth rate:
Exp(365 × b) – 1
= Exp(365 × 0.0017) – 1
= 89.10%
Price channel spread:
Exp(4 × s) – 1
= Exp(4 × 0.0532) – 1
= 23.73%
June 18, 2024 calculations
Top border of price channel:
Exp(Y1,033)
= Exp(a + b × X1,033 + 2 × s)
= Exp(a + b × 1,499 + 2 × s)
= Exp(2.5350 + 0.0017 × 1,499 + 2 × 0.0532)
= Exp(5.2581)
= $192.11
Bottom border of price channel:
Exp(Y1,033)
= Exp(a + b × X1,033 – 2 × s)
= Exp(a + b × 1,499 – 2 × s)
= Exp(2.5350 + 0.0017 × 1,499 – 2 × 0.0532)
= Exp(5.0451)
= $155.26
May 8, 2025 calculations
Top border of price channel:
Exp(Y1,255)
= Exp(a + b × X1,255 + 2 × s)
= Exp(a + b × 1,823 + 2 × s)
= Exp(2.5350 + 0.0017 × 1,823 + 2 × 0.0532)
= Exp(5.8236)
= $338.20
Bottom border of price channel:
Exp(Y1,255)
= Exp(a + b × X1,255 – 2 × s)
= Exp(a + b × 1,823 – 2 × s)
= Exp(2.5350 + 0.0017 × 1,823 – 2 × 0.0532)
= Exp(5.6107)
= $273.33
Description
- The primary trend is increasing.
- The growth rate of the primary trend is 89.10% per annum.
- PEN price at the close of May 8, 2025 was $288.73 and was inside the primary price channel.
Secondary Trend
Start date: April 24, 2025
End date: May 8, 2025
a = 9.9966
b = -0.0024
s = 0.0058
Annual growth rate:
Exp(365 × b) – 1
= Exp(365 × -0.0024) – 1
= -57.96%
Price channel spread:
Exp(4 × s) – 1
= Exp(4 × 0.0058) – 1
= 2.36%
April 24, 2025 calculations
Top border of price channel:
Exp(Y1,245)
= Exp(a + b × X1,245 + 2 × s)
= Exp(a + b × 1,809 + 2 × s)
= Exp(9.9966 + -0.0024 × 1,809 + 2 × 0.0058)
= Exp(5.7133)
= $302.86
Bottom border of price channel:
Exp(Y1,245)
= Exp(a + b × X1,245 – 2 × s)
= Exp(a + b × 1,809 – 2 × s)
= Exp(9.9966 + -0.0024 × 1,809 – 2 × 0.0058)
= Exp(5.6899)
= $295.88
May 8, 2025 calculations
Top border of price channel:
Exp(Y1,255)
= Exp(a + b × X1,255 + 2 × s)
= Exp(a + b × 1,823 + 2 × s)
= Exp(9.9966 + -0.0024 × 1,823 + 2 × 0.0058)
= Exp(5.6800)
= $292.96
Bottom border of price channel:
Exp(Y1,255)
= Exp(a + b × X1,255 – 2 × s)
= Exp(a + b × 1,823 – 2 × s)
= Exp(9.9966 + -0.0024 × 1,823 – 2 × 0.0058)
= Exp(5.6567)
= $286.20
Description
- The secondary trend is decreasing.
- The decline rate of the secondary trend is 57.96% per annum.
- PEN price at the close of May 8, 2025 was inside the secondary price channel.