Stock Price Trends

Diodes Incorporated (DIOD)

Diodes Incorporated designs, manufactures and supplies standard products for specific applications in the discrete, logic, analog and mixed-signal semiconductor markets worldwide. The company is headquartered in Plano, Texas.

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 21.09% per annum.
  • DIOD price at the close of March 28, 2025 was $43.32 and was lower than the bottom border of the primary price channel by $4.16 (8.76%).
  • The secondary trend is decreasing.
  • The decline rate of the secondary trend is 80.97% per annum.
  • DIOD 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 DIOD 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 12, 2023
End date: March 27, 2025

a = 5.2049

b = -0.0006

s = 0.0808

Annual growth rate:

Exp(365 × b) – 1
= Exp(365 × -0.0006) – 1
= -21.09%

Price channel spread:

Exp(4 × s) – 1
= Exp(4 × 0.0808) – 1
= 38.13%

January 12, 2023 calculations

Top border of price channel:

Exp(Y702)
= Exp(a + b × X702 + 2 × s)
= Exp(a + b × 1,017 + 2 × s)
= Exp(5.2049 + -0.0006 × 1,017 + 2 × 0.0808)
= Exp(4.7064)
= $110.65

Bottom border of price channel:

Exp(Y702)
= Exp(a + b × X702 – 2 × s)
= Exp(a + b × 1,017 – 2 × s)
= Exp(5.2049 + -0.0006 × 1,017 – 2 × 0.0808)
= Exp(4.3834)
= $80.11

March 27, 2025 calculations

Top border of price channel:

Exp(Y1,254)
= Exp(a + b × X1,254 + 2 × s)
= Exp(a + b × 1,822 + 2 × s)
= Exp(5.2049 + -0.0006 × 1,822 + 2 × 0.0808)
= Exp(4.1839)
= $65.62

Bottom border of price channel:

Exp(Y1,254)
= Exp(a + b × X1,254 – 2 × s)
= Exp(a + b × 1,822 – 2 × s)
= Exp(5.2049 + -0.0006 × 1,822 – 2 × 0.0808)
= Exp(3.8609)
= $47.51

Description

  • The primary trend is decreasing.
  • The decline rate of the primary trend is 21.09% per annum.
  • DIOD price at the close of March 28, 2025 was $43.32 and was lower than the bottom border of the primary price channel by $4.16 (8.76%).

Secondary Trend

Start date: January 3, 2025
End date: March 28, 2025

a = 12.0859

b = -0.0045

s = 0.0352

Annual growth rate:

Exp(365 × b) – 1
= Exp(365 × -0.0045) – 1
= -80.97%

Price channel spread:

Exp(4 × s) – 1
= Exp(4 × 0.0352) – 1
= 15.13%

January 3, 2025 calculations

Top border of price channel:

Exp(Y1,198)
= Exp(a + b × X1,198 + 2 × s)
= Exp(a + b × 1,739 + 2 × s)
= Exp(12.0859 + -0.0045 × 1,739 + 2 × 0.0352)
= Exp(4.2524)
= $70.27

Bottom border of price channel:

Exp(Y1,198)
= Exp(a + b × X1,198 – 2 × s)
= Exp(a + b × 1,739 – 2 × s)
= Exp(12.0859 + -0.0045 × 1,739 – 2 × 0.0352)
= Exp(4.1115)
= $61.04

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(12.0859 + -0.0045 × 1,823 + 2 × 0.0352)
= Exp(3.8706)
= $47.97

Bottom border of price channel:

Exp(Y1,255)
= Exp(a + b × X1,255 – 2 × s)
= Exp(a + b × 1,823 – 2 × s)
= Exp(12.0859 + -0.0045 × 1,823 – 2 × 0.0352)
= Exp(3.7297)
= $41.67

Description

  • The secondary trend is decreasing.
  • The decline rate of the secondary trend is 80.97% per annum.
  • DIOD price at the close of March 28, 2025 was inside the secondary price channel.