Stock Price Trends

Halozyme Therapeutics Inc (HALO)

Halozyme Therapeutics, Inc. is a biopharmaceutical technology platform company in the United States, Switzerland, Ireland, Belgium, Japan, and internationally. The company is headquartered in San Diego, 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 2.87% per annum.
  • HALO price at the close of May 10, 2024 was $43.15 and was inside the primary price channel.
  • The secondary trend is decreasing.
  • The decline rate of the secondary trend is 13.13% per annum.
  • HALO price at the close of May 10, 2024 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 HALO 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: November 6, 2020
End date: May 10, 2024

a = 3.8106

b = -0.0001

s = 0.1305

Annual growth rate:

Exp(365 × b) – 1
= Exp(365 × -0.0001) – 1
= -2.87%

Price channel spread:

Exp(4 × s) – 1
= Exp(4 × 0.1305) – 1
= 68.55%

November 6, 2020 calculations

Top border of price channel:

Exp(Y377)
= Exp(a + b × X377 + 2 × s)
= Exp(a + b × 543 + 2 × s)
= Exp(3.8106 + -0.0001 × 543 + 2 × 0.1305)
= Exp(4.0283)
= $56.16

Bottom border of price channel:

Exp(Y377)
= Exp(a + b × X377 – 2 × s)
= Exp(a + b × 543 – 2 × s)
= Exp(3.8106 + -0.0001 × 543 – 2 × 0.1305)
= Exp(3.5062)
= $33.32

May 10, 2024 calculations

Top border of price channel:

Exp(Y1,258)
= Exp(a + b × X1,258 + 2 × s)
= Exp(a + b × 1,824 + 2 × s)
= Exp(3.8106 + -0.0001 × 1,824 + 2 × 0.1305)
= Exp(3.9261)
= $50.71

Bottom border of price channel:

Exp(Y1,258)
= Exp(a + b × X1,258 – 2 × s)
= Exp(a + b × 1,824 – 2 × s)
= Exp(3.8106 + -0.0001 × 1,824 – 2 × 0.1305)
= Exp(3.4040)
= $30.08

Description

  • The primary trend is decreasing.
  • The decline rate of the primary trend is 2.87% per annum.
  • HALO price at the close of May 10, 2024 was $43.15 and was inside the primary price channel.

Secondary Trend

Start date: May 24, 2022
End date: May 10, 2024

a = 4.2886

b = -0.0004

s = 0.1295

Annual growth rate:

Exp(365 × b) – 1
= Exp(365 × -0.0004) – 1
= -13.13%

Price channel spread:

Exp(4 × s) – 1
= Exp(4 × 0.1295) – 1
= 67.88%

May 24, 2022 calculations

Top border of price channel:

Exp(Y765)
= Exp(a + b × X765 + 2 × s)
= Exp(a + b × 1,107 + 2 × s)
= Exp(4.2886 + -0.0004 × 1,107 + 2 × 0.1295)
= Exp(4.1207)
= $61.60

Bottom border of price channel:

Exp(Y765)
= Exp(a + b × X765 – 2 × s)
= Exp(a + b × 1,107 – 2 × s)
= Exp(4.2886 + -0.0004 × 1,107 – 2 × 0.1295)
= Exp(3.6026)
= $36.69

May 10, 2024 calculations

Top border of price channel:

Exp(Y1,258)
= Exp(a + b × X1,258 + 2 × s)
= Exp(a + b × 1,824 + 2 × s)
= Exp(4.2886 + -0.0004 × 1,824 + 2 × 0.1295)
= Exp(3.8442)
= $46.72

Bottom border of price channel:

Exp(Y1,258)
= Exp(a + b × X1,258 – 2 × s)
= Exp(a + b × 1,824 – 2 × s)
= Exp(4.2886 + -0.0004 × 1,824 – 2 × 0.1295)
= Exp(3.3261)
= $27.83

Description

  • The secondary trend is decreasing.
  • The decline rate of the secondary trend is 13.13% per annum.
  • HALO price at the close of May 10, 2024 was inside the secondary price channel.