Stock Price Trends

Appfolio Inc (APPF)

AppFolio, Inc. provides industry-specific cloud-based enterprise software data analytics, services and solutions for the real estate industry. The company is headquartered in Santa Barbara, California.

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 62.87% per annum.
  • APPF price at the close of November 19, 2024 was $228.55 and was lower than the bottom border of the primary price channel by $31.84 (12.23%). This indicates a possible reversal in the primary trend direction.
  • The secondary trend is decreasing.
  • The decline rate of the secondary trend is 6.14% per annum.
  • APPF price at the close of November 19, 2024 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 APPF 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: April 26, 2022
End date: July 25, 2024

a = 3.2851

b = 0.0013

s = 0.0815

Annual growth rate:

Exp(365 × b) – 1
= Exp(365 × 0.0013) – 1
= 62.87%

Price channel spread:

Exp(4 × s) – 1
= Exp(4 × 0.0815) – 1
= 38.56%

April 26, 2022 calculations

Top border of price channel:

Exp(Y611)
= Exp(a + b × X611 + 2 × s)
= Exp(a + b × 888 + 2 × s)
= Exp(3.2851 + 0.0013 × 888 + 2 × 0.0815)
= Exp(4.6349)
= $103.01

Bottom border of price channel:

Exp(Y611)
= Exp(a + b × X611 – 2 × s)
= Exp(a + b × 888 – 2 × s)
= Exp(3.2851 + 0.0013 × 888 – 2 × 0.0815)
= Exp(4.3087)
= $74.34

July 25, 2024 calculations

Top border of price channel:

Exp(Y1,175)
= Exp(a + b × X1,175 + 2 × s)
= Exp(a + b × 1,709 + 2 × s)
= Exp(3.2851 + 0.0013 × 1,709 + 2 × 0.0815)
= Exp(5.7320)
= $308.59

Bottom border of price channel:

Exp(Y1,175)
= Exp(a + b × X1,175 – 2 × s)
= Exp(a + b × 1,709 – 2 × s)
= Exp(3.2851 + 0.0013 × 1,709 – 2 × 0.0815)
= Exp(5.4058)
= $222.70

Description

  • The primary trend is increasing.
  • The growth rate of the primary trend is 62.87% per annum.
  • APPF price at the close of November 19, 2024 was $228.55 and was lower than the bottom border of the primary price channel by $31.84 (12.23%). This indicates a possible reversal in the primary trend direction.

Secondary Trend

Start date: January 26, 2024
End date: November 19, 2024

a = 5.7298

b = -0.0002

s = 0.0575

Annual growth rate:

Exp(365 × b) – 1
= Exp(365 × -0.0002) – 1
= -6.14%

Price channel spread:

Exp(4 × s) – 1
= Exp(4 × 0.0575) – 1
= 25.86%

January 26, 2024 calculations

Top border of price channel:

Exp(Y1,051)
= Exp(a + b × X1,051 + 2 × s)
= Exp(a + b × 1,528 + 2 × s)
= Exp(5.7298 + -0.0002 × 1,528 + 2 × 0.0575)
= Exp(5.5795)
= $264.95

Bottom border of price channel:

Exp(Y1,051)
= Exp(a + b × X1,051 – 2 × s)
= Exp(a + b × 1,528 – 2 × s)
= Exp(5.7298 + -0.0002 × 1,528 – 2 × 0.0575)
= Exp(5.3495)
= $210.50

November 19, 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(5.7298 + -0.0002 × 1,826 + 2 × 0.0575)
= Exp(5.5278)
= $251.58

Bottom border of price channel:

Exp(Y1,257)
= Exp(a + b × X1,257 – 2 × s)
= Exp(a + b × 1,826 – 2 × s)
= Exp(5.7298 + -0.0002 × 1,826 – 2 × 0.0575)
= Exp(5.2978)
= $199.89

Description

  • The secondary trend is decreasing.
  • The decline rate of the secondary trend is 6.14% per annum.
  • APPF price at the close of November 19, 2024 was inside the secondary price channel.