Stock Price Trends

Papa John's International Inc (PZZA)

Papa John's International, Inc. operates and franchises pizza delivery and take-out restaurants under the Papa John's trademark in the United States and internationally. The company is headquartered in Louisville, Kentucky.

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 23.01% per annum.
  • PZZA price at the close of November 20, 2024 was $47.31 and was inside the primary price channel.
  • The secondary trend is increasing.
  • The growth rate of the secondary trend is 104.09% per annum.
  • PZZA price at the close of November 20, 2024 was lower than the bottom border of the secondary price channel by $1.86 (3.79%). This indicates a possible reversal in the secondary trend direction.
  • 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 PZZA 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: July 9, 2021
End date: November 20, 2024

a = 5.1864

b = -0.0007

s = 0.1148

Annual growth rate:

Exp(365 × b) – 1
= Exp(365 × -0.0007) – 1
= -23.01%

Price channel spread:

Exp(4 × s) – 1
= Exp(4 × 0.1148) – 1
= 58.30%

July 9, 2021 calculations

Top border of price channel:

Exp(Y409)
= Exp(a + b × X409 + 2 × s)
= Exp(a + b × 596 + 2 × s)
= Exp(5.1864 + -0.0007 × 596 + 2 × 0.1148)
= Exp(4.9891)
= $146.81

Bottom border of price channel:

Exp(Y409)
= Exp(a + b × X409 – 2 × s)
= Exp(a + b × 596 – 2 × s)
= Exp(5.1864 + -0.0007 × 596 – 2 × 0.1148)
= Exp(4.5298)
= $92.74

November 20, 2024 calculations

Top border of price channel:

Exp(Y1,257)
= Exp(a + b × X1,257 + 2 × s)
= Exp(a + b × 1,826 + 2 × s)
= Exp(5.1864 + -0.0007 × 1,826 + 2 × 0.1148)
= Exp(4.1079)
= $60.82

Bottom border of price channel:

Exp(Y1,257)
= Exp(a + b × X1,257 – 2 × s)
= Exp(a + b × 1,826 – 2 × s)
= Exp(5.1864 + -0.0007 × 1,826 – 2 × 0.1148)
= Exp(3.6487)
= $38.42

Description

  • The primary trend is decreasing.
  • The decline rate of the primary trend is 23.01% per annum.
  • PZZA price at the close of November 20, 2024 was $47.31 and was inside the primary price channel.

Secondary Trend

Start date: July 3, 2024
End date: November 20, 2024

a = 0.4265

b = 0.0020

s = 0.0500

Annual growth rate:

Exp(365 × b) – 1
= Exp(365 × 0.0020) – 1
= 104.09%

Price channel spread:

Exp(4 × s) – 1
= Exp(4 × 0.0500) – 1
= 22.14%

July 3, 2024 calculations

Top border of price channel:

Exp(Y1,159)
= Exp(a + b × X1,159 + 2 × s)
= Exp(a + b × 1,686 + 2 × s)
= Exp(0.4265 + 0.0020 × 1,686 + 2 × 0.0500)
= Exp(3.8217)
= $45.68

Bottom border of price channel:

Exp(Y1,159)
= Exp(a + b × X1,159 – 2 × s)
= Exp(a + b × 1,686 – 2 × s)
= Exp(0.4265 + 0.0020 × 1,686 – 2 × 0.0500)
= Exp(3.6217)
= $37.40

November 20, 2024 calculations

Top border of price channel:

Exp(Y1,257)
= Exp(a + b × X1,257 + 2 × s)
= Exp(a + b × 1,826 + 2 × s)
= Exp(0.4265 + 0.0020 × 1,826 + 2 × 0.0500)
= Exp(4.0953)
= $60.06

Bottom border of price channel:

Exp(Y1,257)
= Exp(a + b × X1,257 – 2 × s)
= Exp(a + b × 1,826 – 2 × s)
= Exp(0.4265 + 0.0020 × 1,826 – 2 × 0.0500)
= Exp(3.8953)
= $49.17

Description

  • The secondary trend is increasing.
  • The growth rate of the secondary trend is 104.09% per annum.
  • PZZA price at the close of November 20, 2024 was lower than the bottom border of the secondary price channel by $1.86 (3.79%). This indicates a possible reversal in the secondary trend direction.