# Cohu Inc (COHU)

Cohu, Inc. is engaged in semiconductor inspection and test equipment and printed circuit board (PCB) test equipment businesses in China, the United States, Taiwan, Malaysia, the Philippines, and internationally. The company is headquartered in Poway, 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 18.81% per annum.
- COHU price at the close of October 11, 2024 was $25.47 and was inside the primary price channel.
- The secondary trend is decreasing.
- The decline rate of the secondary trend is 65.09% per annum.
- COHU price at the close of October 11, 2024 was inside the secondary price channel.

### Linear Regression Model

Model equation:

Y_{i} = α + β × X_{i} + ε_{i}

Top border of price channel:

Exp(Y_{i}) = Exp(a + b × X_{i} + 2 × s)

Bottom border of price channel:

Exp(Y_{i}) = Exp(a + b × X_{i} – 2 × s)

where:

i - observation number

Y_{i} - natural logarithm of COHU price

X_{i} - time index, 1 day interval

σ - standard deviation of ε_{i}

a - estimator of α

b - estimator of β

s - estimator of σ

Exp() - calculates the exponent of e

### Primary Trend

Start date: January 23, 2023

End date: October 11, 2024

a = 4.3633

b = -0.0006

s = 0.0791

Annual growth rate:

Exp(365 × b) – 1

= Exp(365 × -0.0006) – 1

= -18.81%

Price channel spread:

Exp(4 × s) – 1

= Exp(4 × 0.0791) – 1

= 37.20%

#### January 23, 2023 calculations

Top border of price channel:

Exp(Y_{824})

= Exp(a + b × X_{824} + 2 × s)

= Exp(a + b × 1,197 + 2 × s)

= Exp(4.3633 + -0.0006 × 1,197 + 2 × 0.0791)

= Exp(3.8380)

= $46.43

Bottom border of price channel:

Exp(Y_{824})

= Exp(a + b × X_{824} – 2 × s)

= Exp(a + b × 1,197 – 2 × s)

= Exp(4.3633 + -0.0006 × 1,197 – 2 × 0.0791)

= Exp(3.5218)

= $33.84

#### October 11, 2024 calculations

Top border of price channel:

Exp(Y_{1,257})

= Exp(a + b × X_{1,257} + 2 × s)

= Exp(a + b × 1,824 + 2 × s)

= Exp(4.3633 + -0.0006 × 1,824 + 2 × 0.0791)

= Exp(3.4801)

= $32.46

Bottom border of price channel:

Exp(Y_{1,257})

= Exp(a + b × X_{1,257} – 2 × s)

= Exp(a + b × 1,824 – 2 × s)

= Exp(4.3633 + -0.0006 × 1,824 – 2 × 0.0791)

= Exp(3.1638)

= $23.66

#### Description

- The primary trend is decreasing.
- The decline rate of the primary trend is 18.81% per annum.
- COHU price at the close of October 11, 2024 was $25.47 and was inside the primary price channel.

### Secondary Trend

Start date: May 30, 2024

End date: October 11, 2024

a = 8.4138

b = -0.0029

s = 0.0740

Annual growth rate:

Exp(365 × b) – 1

= Exp(365 × -0.0029) – 1

= -65.09%

Price channel spread:

Exp(4 × s) – 1

= Exp(4 × 0.0740) – 1

= 34.45%

#### May 30, 2024 calculations

Top border of price channel:

Exp(Y_{1,164})

= Exp(a + b × X_{1,164} + 2 × s)

= Exp(a + b × 1,690 + 2 × s)

= Exp(8.4138 + -0.0029 × 1,690 + 2 × 0.0740)

= Exp(3.6889)

= $40.00

Bottom border of price channel:

Exp(Y_{1,164})

= Exp(a + b × X_{1,164} – 2 × s)

= Exp(a + b × 1,690 – 2 × s)

= Exp(8.4138 + -0.0029 × 1,690 – 2 × 0.0740)

= Exp(3.3929)

= $29.75

#### October 11, 2024 calculations

Top border of price channel:

Exp(Y_{1,257})

= Exp(a + b × X_{1,257} + 2 × s)

= Exp(a + b × 1,824 + 2 × s)

= Exp(8.4138 + -0.0029 × 1,824 + 2 × 0.0740)

= Exp(3.3025)

= $27.18

Bottom border of price channel:

Exp(Y_{1,257})

= Exp(a + b × X_{1,257} – 2 × s)

= Exp(a + b × 1,824 – 2 × s)

= Exp(8.4138 + -0.0029 × 1,824 – 2 × 0.0740)

= Exp(3.0065)

= $20.22

#### Description

- The secondary trend is decreasing.
- The decline rate of the secondary trend is 65.09% per annum.
- COHU price at the close of October 11, 2024 was inside the secondary price channel.