Stock Price Trends

InterDigital Inc (IDCC)

InterDigital, Inc. designs and develops technologies that enable and enhance wireless communications in the United States and internationally. The company is headquartered in Wilmington, Delaware.

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 75.58% per annum.
  • IDCC price at the close of June 30, 2025 was $224.23 and was inside the primary price channel.
  • The secondary trend is increasing.
  • The growth rate of the secondary trend is 107.61% per annum.
  • IDCC price at the close of June 30, 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 IDCC 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: August 19, 2022
End date: June 30, 2025

a = 2.6213

b = 0.0015

s = 0.1075

Annual growth rate:

Exp(365 × b) – 1
= Exp(365 × 0.0015) – 1
= 75.58%

Price channel spread:

Exp(4 × s) – 1
= Exp(4 × 0.1075) – 1
= 53.70%

August 19, 2022 calculations

Top border of price channel:

Exp(Y538)
= Exp(a + b × X538 + 2 × s)
= Exp(a + b × 779 + 2 × s)
= Exp(2.6213 + 0.0015 × 779 + 2 × 0.1075)
= Exp(4.0376)
= $56.69

Bottom border of price channel:

Exp(Y538)
= Exp(a + b × X538 – 2 × s)
= Exp(a + b × 779 – 2 × s)
= Exp(2.6213 + 0.0015 × 779 – 2 × 0.1075)
= Exp(3.6078)
= $36.88

June 30, 2025 calculations

Top border of price channel:

Exp(Y1,254)
= Exp(a + b × X1,254 + 2 × s)
= Exp(a + b × 1,825 + 2 × s)
= Exp(2.6213 + 0.0015 × 1,825 + 2 × 0.1075)
= Exp(5.6508)
= $284.52

Bottom border of price channel:

Exp(Y1,254)
= Exp(a + b × X1,254 – 2 × s)
= Exp(a + b × 1,825 – 2 × s)
= Exp(2.6213 + 0.0015 × 1,825 – 2 × 0.1075)
= Exp(5.2210)
= $185.11

Description

  • The primary trend is increasing.
  • The growth rate of the primary trend is 75.58% per annum.
  • IDCC price at the close of June 30, 2025 was $224.23 and was inside the primary price channel.

Secondary Trend

Start date: March 14, 2024
End date: June 30, 2025

a = 1.8699

b = 0.0020

s = 0.0754

Annual growth rate:

Exp(365 × b) – 1
= Exp(365 × 0.0020) – 1
= 107.61%

Price channel spread:

Exp(4 × s) – 1
= Exp(4 × 0.0754) – 1
= 35.20%

March 14, 2024 calculations

Top border of price channel:

Exp(Y931)
= Exp(a + b × X931 + 2 × s)
= Exp(a + b × 1,352 + 2 × s)
= Exp(1.8699 + 0.0020 × 1,352 + 2 × 0.0754)
= Exp(4.7266)
= $112.91

Bottom border of price channel:

Exp(Y931)
= Exp(a + b × X931 – 2 × s)
= Exp(a + b × 1,352 – 2 × s)
= Exp(1.8699 + 0.0020 × 1,352 – 2 × 0.0754)
= Exp(4.4250)
= $83.51

June 30, 2025 calculations

Top border of price channel:

Exp(Y1,254)
= Exp(a + b × X1,254 + 2 × s)
= Exp(a + b × 1,825 + 2 × s)
= Exp(1.8699 + 0.0020 × 1,825 + 2 × 0.0754)
= Exp(5.6733)
= $290.98

Bottom border of price channel:

Exp(Y1,254)
= Exp(a + b × X1,254 – 2 × s)
= Exp(a + b × 1,825 – 2 × s)
= Exp(1.8699 + 0.0020 × 1,825 – 2 × 0.0754)
= Exp(5.3717)
= $215.22

Description

  • The secondary trend is increasing.
  • The growth rate of the secondary trend is 107.61% per annum.
  • IDCC price at the close of June 30, 2025 was inside the secondary price channel.