Telephone and Data Systems Inc (TDS)
Telephone and Data Systems, Inc., a telecommunications company, provides communications services in the United States. The company is headquartered in Chicago, Illinois.
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 84.30% per annum.
- TDS price at the close of July 14, 2025 was $39.75 and was inside the primary price channel.
- The secondary trend is increasing.
- The growth rate of the secondary trend is 4.90% per annum.
- TDS price at the close of July 14, 2025 was higher than the top border of the secondary price channel by $0.28 (0.71%).
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 TDS 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 11, 2022
End date: July 14, 2025
a = 0.6546
b = 0.0017
s = 0.2077
Annual growth rate:
Exp(365 × b) – 1
= Exp(365 × 0.0017) – 1
= 84.30%
Price channel spread:
Exp(4 × s) – 1
= Exp(4 × 0.2077) – 1
= 129.51%
November 11, 2022 calculations
Top border of price channel:
Exp(Y588)
= Exp(a + b × X588 + 2 × s)
= Exp(a + b × 849 + 2 × s)
= Exp(0.6546 + 0.0017 × 849 + 2 × 0.2077)
= Exp(2.4921)
= $12.09
Bottom border of price channel:
Exp(Y588)
= Exp(a + b × X588 – 2 × s)
= Exp(a + b × 849 – 2 × s)
= Exp(0.6546 + 0.0017 × 849 – 2 × 0.2077)
= Exp(1.6613)
= $5.27
July 14, 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(0.6546 + 0.0017 × 1,825 + 2 × 0.2077)
= Exp(4.1269)
= $61.98
Bottom border of price channel:
Exp(Y1,254)
= Exp(a + b × X1,254 – 2 × s)
= Exp(a + b × 1,825 – 2 × s)
= Exp(0.6546 + 0.0017 × 1,825 – 2 × 0.2077)
= Exp(3.2961)
= $27.01
Description
- The primary trend is increasing.
- The growth rate of the primary trend is 84.30% per annum.
- TDS price at the close of July 14, 2025 was $39.75 and was inside the primary price channel.
Secondary Trend
Start date: November 21, 2024
End date: July 14, 2025
a = 3.3398
b = 0.0001
s = 0.0482
Annual growth rate:
Exp(365 × b) – 1
= Exp(365 × 0.0001) – 1
= 4.90%
Price channel spread:
Exp(4 × s) – 1
= Exp(4 × 0.0482) – 1
= 21.27%
November 21, 2024 calculations
Top border of price channel:
Exp(Y1,097)
= Exp(a + b × X1,097 + 2 × s)
= Exp(a + b × 1,590 + 2 × s)
= Exp(3.3398 + 0.0001 × 1,590 + 2 × 0.0482)
= Exp(3.6447)
= $38.27
Bottom border of price channel:
Exp(Y1,097)
= Exp(a + b × X1,097 – 2 × s)
= Exp(a + b × 1,590 – 2 × s)
= Exp(3.3398 + 0.0001 × 1,590 – 2 × 0.0482)
= Exp(3.4519)
= $31.56
July 14, 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(3.3398 + 0.0001 × 1,825 + 2 × 0.0482)
= Exp(3.6755)
= $39.47
Bottom border of price channel:
Exp(Y1,254)
= Exp(a + b × X1,254 – 2 × s)
= Exp(a + b × 1,825 – 2 × s)
= Exp(3.3398 + 0.0001 × 1,825 – 2 × 0.0482)
= Exp(3.4827)
= $32.55
Description
- The secondary trend is increasing.
- The growth rate of the secondary trend is 4.90% per annum.
- TDS price at the close of July 14, 2025 was higher than the top border of the secondary price channel by $0.28 (0.71%).