United Airlines Holdings Inc (UAL)
United Airlines Holdings, Inc. (formerly known as United Continental Holdings, Inc., UAL Corporation, Allegis Corporation and founded originally as UAL, Inc.) is a publicly traded airline holding company headquartered in the Willis Tower in Chicago. UAH owns and operates United Airlines, Inc.
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 71.00% per annum.
- UAL price at the close of September 29, 2025 was $98.64 and was inside the primary price channel.
- The secondary trend is increasing.
- The growth rate of the secondary trend is 193.21% per annum.
- UAL price at the close of September 29, 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 UAL 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: September 22, 2023
End date: September 29, 2025
a = 1.9778
b = 0.0015
s = 0.1804
Annual growth rate:
Exp(365 × b) – 1
= Exp(365 × 0.0015) – 1
= 71.00%
Price channel spread:
Exp(4 × s) – 1
= Exp(4 × 0.1804) – 1
= 105.78%
September 22, 2023 calculations
Top border of price channel:
Exp(Y749)
= Exp(a + b × X749 + 2 × s)
= Exp(a + b × 1,087 + 2 × s)
= Exp(1.9778 + 0.0015 × 1,087 + 2 × 0.1804)
= Exp(3.9364)
= $51.23
Bottom border of price channel:
Exp(Y749)
= Exp(a + b × X749 – 2 × s)
= Exp(a + b × 1,087 – 2 × s)
= Exp(1.9778 + 0.0015 × 1,087 – 2 × 0.1804)
= Exp(3.2148)
= $24.90
September 29, 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(1.9778 + 0.0015 × 1,825 + 2 × 0.1804)
= Exp(5.0212)
= $151.59
Bottom border of price channel:
Exp(Y1,254)
= Exp(a + b × X1,254 – 2 × s)
= Exp(a + b × 1,825 – 2 × s)
= Exp(1.9778 + 0.0015 × 1,825 – 2 × 0.1804)
= Exp(4.2996)
= $73.67
Description
- The primary trend is increasing.
- The growth rate of the primary trend is 71.00% per annum.
- UAL price at the close of September 29, 2025 was $98.64 and was inside the primary price channel.
Secondary Trend
Start date: April 3, 2025
End date: September 29, 2025
a = -0.6829
b = 0.0029
s = 0.0527
Annual growth rate:
Exp(365 × b) – 1
= Exp(365 × 0.0029) – 1
= 193.21%
Price channel spread:
Exp(4 × s) – 1
= Exp(4 × 0.0527) – 1
= 23.48%
April 3, 2025 calculations
Top border of price channel:
Exp(Y1,132)
= Exp(a + b × X1,132 + 2 × s)
= Exp(a + b × 1,646 + 2 × s)
= Exp(-0.6829 + 0.0029 × 1,646 + 2 × 0.0527)
= Exp(4.2736)
= $71.78
Bottom border of price channel:
Exp(Y1,132)
= Exp(a + b × X1,132 – 2 × s)
= Exp(a + b × 1,646 – 2 × s)
= Exp(-0.6829 + 0.0029 × 1,646 – 2 × 0.0527)
= Exp(4.0627)
= $58.13
September 29, 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(-0.6829 + 0.0029 × 1,825 + 2 × 0.0527)
= Exp(4.8012)
= $121.65
Bottom border of price channel:
Exp(Y1,254)
= Exp(a + b × X1,254 – 2 × s)
= Exp(a + b × 1,825 – 2 × s)
= Exp(-0.6829 + 0.0029 × 1,825 – 2 × 0.0527)
= Exp(4.5903)
= $98.52
Description
- The secondary trend is increasing.
- The growth rate of the secondary trend is 193.21% per annum.
- UAL price at the close of September 29, 2025 was inside the secondary price channel.