Catalyst Pharmaceuticals Inc (CPRX)
Catalyst Pharmaceuticals, Inc., a commercial-stage biopharmaceutical company, focuses on developing and commercializing therapies for people with rare debilitating, neuromuscular, and chronic neurological diseases in the United States. The company is headquartered in Coral Gables, Florida.
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 1.83% per annum.
- CPRX price at the close of August 22, 2025 was $21.08 and was higher than the top border of the primary price channel by $1.52 (7.77%).
- The secondary trend is increasing.
- The growth rate of the secondary trend is 44.29% per annum.
- CPRX price at the close of August 22, 2025 was lower than the bottom border of the secondary price channel by $2.08 (8.97%). This indicates a possible reversal in the secondary trend direction.
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 CPRX 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: August 10, 2022
End date: August 7, 2024
a = 2.6370
b = 0.0000
s = 0.1228
Annual growth rate:
Exp(365 × b) – 1
= Exp(365 × 0.0000) – 1
= 1.83%
Price channel spread:
Exp(4 × s) – 1
= Exp(4 × 0.1228) – 1
= 63.44%
August 10, 2022 calculations
Top border of price channel:
Exp(Y494)
= Exp(a + b × X494 + 2 × s)
= Exp(a + b × 716 + 2 × s)
= Exp(2.6370 + 0.0000 × 716 + 2 × 0.1228)
= Exp(2.9183)
= $18.51
Bottom border of price channel:
Exp(Y494)
= Exp(a + b × X494 – 2 × s)
= Exp(a + b × 716 – 2 × s)
= Exp(2.6370 + 0.0000 × 716 – 2 × 0.1228)
= Exp(2.4270)
= $11.33
August 7, 2024 calculations
Top border of price channel:
Exp(Y994)
= Exp(a + b × X994 + 2 × s)
= Exp(a + b × 1,444 + 2 × s)
= Exp(2.6370 + 0.0000 × 1,444 + 2 × 0.1228)
= Exp(2.9546)
= $19.19
Bottom border of price channel:
Exp(Y994)
= Exp(a + b × X994 – 2 × s)
= Exp(a + b × 1,444 – 2 × s)
= Exp(2.6370 + 0.0000 × 1,444 – 2 × 0.1228)
= Exp(2.4633)
= $11.74
Description
- The primary trend is increasing.
- The growth rate of the primary trend is 1.83% per annum.
- CPRX price at the close of August 22, 2025 was $21.08 and was higher than the top border of the primary price channel by $1.52 (7.77%).
Secondary Trend
Start date: May 12, 2023
End date: June 18, 2025
a = 1.4556
b = 0.0010
s = 0.0728
Annual growth rate:
Exp(365 × b) – 1
= Exp(365 × 0.0010) – 1
= 44.29%
Price channel spread:
Exp(4 × s) – 1
= Exp(4 × 0.0728) – 1
= 33.79%
May 12, 2023 calculations
Top border of price channel:
Exp(Y684)
= Exp(a + b × X684 + 2 × s)
= Exp(a + b × 991 + 2 × s)
= Exp(1.4556 + 0.0010 × 991 + 2 × 0.0728)
= Exp(2.5966)
= $13.42
Bottom border of price channel:
Exp(Y684)
= Exp(a + b × X684 – 2 × s)
= Exp(a + b × 991 – 2 × s)
= Exp(1.4556 + 0.0010 × 991 – 2 × 0.0728)
= Exp(2.3056)
= $10.03
June 18, 2025 calculations
Top border of price channel:
Exp(Y1,210)
= Exp(a + b × X1,210 + 2 × s)
= Exp(a + b × 1,759 + 2 × s)
= Exp(1.4556 + 0.0010 × 1,759 + 2 × 0.0728)
= Exp(3.3681)
= $29.02
Bottom border of price channel:
Exp(Y1,210)
= Exp(a + b × X1,210 – 2 × s)
= Exp(a + b × 1,759 – 2 × s)
= Exp(1.4556 + 0.0010 × 1,759 – 2 × 0.0728)
= Exp(3.0770)
= $21.69
Description
- The secondary trend is increasing.
- The growth rate of the secondary trend is 44.29% per annum.
- CPRX price at the close of August 22, 2025 was lower than the bottom border of the secondary price channel by $2.08 (8.97%). This indicates a possible reversal in the secondary trend direction.