Sarepta Therapeutics Inc (SRPT)
Sarepta Therapeutics, Inc. is a leading biopharmaceutical company headquartered in Cambridge, Massachusetts, specializing in the development of innovative RNA-targeted therapies and gene therapies for rare genetic disorders. With a robust pipeline and a commitment to addressing unmet medical needs, Sarepta is at the forefront of transforming treatment paradigms for conditions such as Duchenne muscular dystrophy (DMD). The company leverages cutting-edge science and technology to create novel therapeutics, positioning itself as a key player in the evolving landscape of genetic medicine.
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 83.94% per annum.
- SRPT price at the close of December 24, 2025 was $22.32 and was inside the primary price channel.
- The secondary trend is increasing.
- The growth rate of the secondary trend is 62.21% per annum.
- SRPT price at the close of December 24, 2025 was inside the secondary price channel.
- The direction of the secondary trend is opposite to the direction of the primary trend. This indicates a possible reversal in the direction of the primary trend.
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 SRPT 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: June 21, 2024
End date: December 23, 2025
a = 11.7717
b = -0.0050
s = 0.3279
Annual growth rate:
Exp(365 × b) – 1
= Exp(365 × -0.0050) – 1
= -83.94%
Price channel spread:
Exp(4 × s) – 1
= Exp(4 × 0.3279) – 1
= 271.15%
June 21, 2024 calculations
Top border of price channel:
Exp(Y875)
= Exp(a + b × X875 + 2 × s)
= Exp(a + b × 1,271 + 2 × s)
= Exp(11.7717 + -0.0050 × 1,271 + 2 × 0.3279)
= Exp(6.0583)
= $427.65
Bottom border of price channel:
Exp(Y875)
= Exp(a + b × X875 – 2 × s)
= Exp(a + b × 1,271 – 2 × s)
= Exp(11.7717 + -0.0050 × 1,271 – 2 × 0.3279)
= Exp(4.7469)
= $115.22
December 23, 2025 calculations
Top border of price channel:
Exp(Y1,253)
= Exp(a + b × X1,253 + 2 × s)
= Exp(a + b × 1,821 + 2 × s)
= Exp(11.7717 + -0.0050 × 1,821 + 2 × 0.3279)
= Exp(3.3022)
= $27.17
Bottom border of price channel:
Exp(Y1,253)
= Exp(a + b × X1,253 – 2 × s)
= Exp(a + b × 1,821 – 2 × s)
= Exp(11.7717 + -0.0050 × 1,821 – 2 × 0.3279)
= Exp(1.9908)
= $7.32
Description
- The primary trend is decreasing.
- The decline rate of the primary trend is 83.94% per annum.
- SRPT price at the close of December 24, 2025 was $22.32 and was inside the primary price channel.
Secondary Trend
Start date: June 20, 2025
End date: December 24, 2025
a = 0.6594
b = 0.0013
s = 0.1223
Annual growth rate:
Exp(365 × b) – 1
= Exp(365 × 0.0013) – 1
= 62.21%
Price channel spread:
Exp(4 × s) – 1
= Exp(4 × 0.1223) – 1
= 63.07%
June 20, 2025 calculations
Top border of price channel:
Exp(Y1,124)
= Exp(a + b × X1,124 + 2 × s)
= Exp(a + b × 1,635 + 2 × s)
= Exp(0.6594 + 0.0013 × 1,635 + 2 × 0.1223)
= Exp(3.0707)
= $21.56
Bottom border of price channel:
Exp(Y1,124)
= Exp(a + b × X1,124 – 2 × s)
= Exp(a + b × 1,635 – 2 × s)
= Exp(0.6594 + 0.0013 × 1,635 – 2 × 0.1223)
= Exp(2.5817)
= $13.22
December 24, 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(0.6594 + 0.0013 × 1,822 + 2 × 0.1223)
= Exp(3.3185)
= $27.62
Bottom border of price channel:
Exp(Y1,254)
= Exp(a + b × X1,254 – 2 × s)
= Exp(a + b × 1,822 – 2 × s)
= Exp(0.6594 + 0.0013 × 1,822 – 2 × 0.1223)
= Exp(2.8295)
= $16.94
Description
- The secondary trend is increasing.
- The growth rate of the secondary trend is 62.21% per annum.
- SRPT price at the close of December 24, 2025 was inside the secondary price channel.