Charles River Laboratories (CRL)
Charles River Laboratories International, Inc., is an American pharmaceutical company specializing in a variety of preclinical and clinical laboratory, gene therapy and cell therapy services for the Pharmaceutical, Medical device and Biotechnology industries. It also supplies assorted biomedical products and outsourcing services for research and development in the pharmaceutical industry and offer support in the fields of basic research, drug discovery, safety and efficacy, clinical support, and manufacturing.
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 34.04% per annum.
- CRL price at the close of April 2, 2025 was $149.28 and was inside the primary price channel.
- The secondary trend is decreasing.
- The decline rate of the secondary trend is 98.32% per annum.
- CRL price at the close of April 2, 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 CRL 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: February 14, 2024
End date: April 2, 2025
a = 7.1584
b = -0.0011
s = 0.0553
Annual growth rate:
Exp(365 × b) – 1
= Exp(365 × -0.0011) – 1
= -34.04%
Price channel spread:
Exp(4 × s) – 1
= Exp(4 × 0.0553) – 1
= 24.77%
February 14, 2024 calculations
Top border of price channel:
Exp(Y972)
= Exp(a + b × X972 + 2 × s)
= Exp(a + b × 1,412 + 2 × s)
= Exp(7.1584 + -0.0011 × 1,412 + 2 × 0.0553)
= Exp(5.6591)
= $286.88
Bottom border of price channel:
Exp(Y972)
= Exp(a + b × X972 – 2 × s)
= Exp(a + b × 1,412 – 2 × s)
= Exp(7.1584 + -0.0011 × 1,412 – 2 × 0.0553)
= Exp(5.4377)
= $229.92
April 2, 2025 calculations
Top border of price channel:
Exp(Y1,255)
= Exp(a + b × X1,255 + 2 × s)
= Exp(a + b × 1,825 + 2 × s)
= Exp(7.1584 + -0.0011 × 1,825 + 2 × 0.0553)
= Exp(5.1882)
= $179.14
Bottom border of price channel:
Exp(Y1,255)
= Exp(a + b × X1,255 – 2 × s)
= Exp(a + b × 1,825 – 2 × s)
= Exp(7.1584 + -0.0011 × 1,825 – 2 × 0.0553)
= Exp(4.9668)
= $143.57
Description
- The primary trend is decreasing.
- The decline rate of the primary trend is 34.04% per annum.
- CRL price at the close of April 2, 2025 was $149.28 and was inside the primary price channel.
Secondary Trend
Start date: March 17, 2025
End date: April 2, 2025
a = 25.4231
b = -0.0112
s = 0.0153
Annual growth rate:
Exp(365 × b) – 1
= Exp(365 × -0.0112) – 1
= -98.32%
Price channel spread:
Exp(4 × s) – 1
= Exp(4 × 0.0153) – 1
= 6.30%
March 17, 2025 calculations
Top border of price channel:
Exp(Y1,243)
= Exp(a + b × X1,243 + 2 × s)
= Exp(a + b × 1,809 + 2 × s)
= Exp(25.4231 + -0.0112 × 1,809 + 2 × 0.0153)
= Exp(5.2017)
= $181.58
Bottom border of price channel:
Exp(Y1,243)
= Exp(a + b × X1,243 – 2 × s)
= Exp(a + b × 1,809 – 2 × s)
= Exp(25.4231 + -0.0112 × 1,809 – 2 × 0.0153)
= Exp(5.1406)
= $170.83
April 2, 2025 calculations
Top border of price channel:
Exp(Y1,255)
= Exp(a + b × X1,255 + 2 × s)
= Exp(a + b × 1,825 + 2 × s)
= Exp(25.4231 + -0.0112 × 1,825 + 2 × 0.0153)
= Exp(5.0226)
= $151.80
Bottom border of price channel:
Exp(Y1,255)
= Exp(a + b × X1,255 – 2 × s)
= Exp(a + b × 1,825 – 2 × s)
= Exp(25.4231 + -0.0112 × 1,825 – 2 × 0.0153)
= Exp(4.9615)
= $142.81
Description
- The secondary trend is decreasing.
- The decline rate of the secondary trend is 98.32% per annum.
- CRL price at the close of April 2, 2025 was inside the secondary price channel.