Sarepta Therapeutics Inc (SRPT)
Sarepta Therapeutics, Inc., a commercial-stage biopharmaceutical company, focuses on the discovery and development of RNA-targeted therapies, gene therapy, and other genetic therapeutic modalities for the treatment of rare diseases. The company is headquartered in Cambridge, Massachusetts.
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 60.84% per annum.
- SRPT price at the close of April 29, 2025 was $60.85 and was lower than the bottom border of the primary price channel by $6.83 (10.09%).
- The secondary trend is decreasing.
- The decline rate of the secondary trend is 97.62% per annum.
- SRPT price at the close of April 29, 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 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: October 10, 2024
a = 8.9547
b = -0.0026
s = 0.0262
Annual growth rate:
Exp(365 × b) – 1
= Exp(365 × -0.0026) – 1
= -60.84%
Price channel spread:
Exp(4 × s) – 1
= Exp(4 × 0.0262) – 1
= 11.03%
June 21, 2024 calculations
Top border of price channel:
Exp(Y1,042)
= Exp(a + b × X1,042 + 2 × s)
= Exp(a + b × 1,513 + 2 × s)
= Exp(8.9547 + -0.0026 × 1,513 + 2 × 0.0262)
= Exp(5.1208)
= $167.47
Bottom border of price channel:
Exp(Y1,042)
= Exp(a + b × X1,042 – 2 × s)
= Exp(a + b × 1,513 – 2 × s)
= Exp(8.9547 + -0.0026 × 1,513 – 2 × 0.0262)
= Exp(5.0162)
= $150.84
October 10, 2024 calculations
Top border of price channel:
Exp(Y1,119)
= Exp(a + b × X1,119 + 2 × s)
= Exp(a + b × 1,624 + 2 × s)
= Exp(8.9547 + -0.0026 × 1,624 + 2 × 0.0262)
= Exp(4.8357)
= $125.93
Bottom border of price channel:
Exp(Y1,119)
= Exp(a + b × X1,119 – 2 × s)
= Exp(a + b × 1,624 – 2 × s)
= Exp(8.9547 + -0.0026 × 1,624 – 2 × 0.0262)
= Exp(4.7311)
= $113.42
Description
- The primary trend is decreasing.
- The decline rate of the primary trend is 60.84% per annum.
- SRPT price at the close of April 29, 2025 was $60.85 and was lower than the bottom border of the primary price channel by $6.83 (10.09%).
Secondary Trend
Start date: January 23, 2025
End date: April 25, 2025
a = 22.6127
b = -0.0102
s = 0.1152
Annual growth rate:
Exp(365 × b) – 1
= Exp(365 × -0.0102) – 1
= -97.62%
Price channel spread:
Exp(4 × s) – 1
= Exp(4 × 0.1152) – 1
= 58.55%
January 23, 2025 calculations
Top border of price channel:
Exp(Y1,189)
= Exp(a + b × X1,189 + 2 × s)
= Exp(a + b × 1,729 + 2 × s)
= Exp(22.6127 + -0.0102 × 1,729 + 2 × 0.1152)
= Exp(5.1448)
= $171.54
Bottom border of price channel:
Exp(Y1,189)
= Exp(a + b × X1,189 – 2 × s)
= Exp(a + b × 1,729 – 2 × s)
= Exp(22.6127 + -0.0102 × 1,729 – 2 × 0.1152)
= Exp(4.6839)
= $108.19
April 25, 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(22.6127 + -0.0102 × 1,821 + 2 × 0.1152)
= Exp(4.2031)
= $66.89
Bottom border of price channel:
Exp(Y1,253)
= Exp(a + b × X1,253 – 2 × s)
= Exp(a + b × 1,821 – 2 × s)
= Exp(22.6127 + -0.0102 × 1,821 – 2 × 0.1152)
= Exp(3.7421)
= $42.19
Description
- The secondary trend is decreasing.
- The decline rate of the secondary trend is 97.62% per annum.
- SRPT price at the close of April 29, 2025 was inside the secondary price channel.