Power Integrations Inc (POWI)
Power Integrations, Inc. designs, develops, manufactures and markets mixed signal and analog integrated circuits (ICs) and other electronic components and circuits used in high voltage power conversion worldwide. The company is headquartered in San Jose, California.
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 19.50% per annum.
- POWI price at the close of March 28, 2025 was $50.98 and was lower than the bottom border of the primary price channel by $0.35 (0.68%).
- The secondary trend is decreasing.
- The decline rate of the secondary trend is 84.42% per annum.
- POWI price at the close of March 28, 2025 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 POWI 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: May 18, 2023
End date: March 28, 2025
a = 5.1428
b = -0.0006
s = 0.0606
Annual growth rate:
Exp(365 × b) – 1
= Exp(365 × -0.0006) – 1
= -19.50%
Price channel spread:
Exp(4 × s) – 1
= Exp(4 × 0.0606) – 1
= 27.43%
May 18, 2023 calculations
Top border of price channel:
Exp(Y789)
= Exp(a + b × X789 + 2 × s)
= Exp(a + b × 1,143 + 2 × s)
= Exp(5.1428 + -0.0006 × 1,143 + 2 × 0.0606)
= Exp(4.5848)
= $97.98
Bottom border of price channel:
Exp(Y789)
= Exp(a + b × X789 – 2 × s)
= Exp(a + b × 1,143 – 2 × s)
= Exp(5.1428 + -0.0006 × 1,143 – 2 × 0.0606)
= Exp(4.3424)
= $76.89
March 28, 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(5.1428 + -0.0006 × 1,823 + 2 × 0.0606)
= Exp(4.1806)
= $65.41
Bottom border of price channel:
Exp(Y1,255)
= Exp(a + b × X1,255 – 2 × s)
= Exp(a + b × 1,823 – 2 × s)
= Exp(5.1428 + -0.0006 × 1,823 – 2 × 0.0606)
= Exp(3.9383)
= $51.33
Description
- The primary trend is decreasing.
- The decline rate of the primary trend is 19.50% per annum.
- POWI price at the close of March 28, 2025 was $50.98 and was lower than the bottom border of the primary price channel by $0.35 (0.68%).
Secondary Trend
Start date: February 19, 2025
End date: March 28, 2025
a = 13.2676
b = -0.0051
s = 0.0272
Annual growth rate:
Exp(365 × b) – 1
= Exp(365 × -0.0051) – 1
= -84.42%
Price channel spread:
Exp(4 × s) – 1
= Exp(4 × 0.0272) – 1
= 11.51%
February 19, 2025 calculations
Top border of price channel:
Exp(Y1,228)
= Exp(a + b × X1,228 + 2 × s)
= Exp(a + b × 1,786 + 2 × s)
= Exp(13.2676 + -0.0051 × 1,786 + 2 × 0.0272)
= Exp(4.2238)
= $68.29
Bottom border of price channel:
Exp(Y1,228)
= Exp(a + b × X1,228 – 2 × s)
= Exp(a + b × 1,786 – 2 × s)
= Exp(13.2676 + -0.0051 × 1,786 – 2 × 0.0272)
= Exp(4.1149)
= $61.24
March 28, 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(13.2676 + -0.0051 × 1,823 + 2 × 0.0272)
= Exp(4.0353)
= $56.56
Bottom border of price channel:
Exp(Y1,255)
= Exp(a + b × X1,255 – 2 × s)
= Exp(a + b × 1,823 – 2 × s)
= Exp(13.2676 + -0.0051 × 1,823 – 2 × 0.0272)
= Exp(3.9264)
= $50.72
Description
- The secondary trend is decreasing.
- The decline rate of the secondary trend is 84.42% per annum.
- POWI price at the close of March 28, 2025 was inside the secondary price channel.