Delta Air Lines Inc (DAL)
Delta Air Lines, Inc. (DAL) is a leading U.S. airline and a veteran player in the global aviation industry, known for its extensive domestic and international network. Headquartered in Atlanta, Georgia, Delta operates a fleet of over 800 aircraft and serves more than 300 destinations in over 50 countries. The airline is distinguished by its commitment to customer service and innovation, underpinned by a robust operational strategy aimed at enhancing efficiency and profitability. With a strong focus on sustainability and technology integration, Delta is well-positioned to adapt to changing market dynamics and continue delivering value to its stakeholders.
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 89.93% per annum.
- DAL price at the close of February 2, 2026 was $69.08 and was inside the primary price channel.
- The secondary trend is decreasing.
- The decline rate of the secondary trend is 30.29% per annum.
- DAL price at the close of February 2, 2026 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 DAL 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: March 27, 2025
End date: January 26, 2026
a = 1.0871
b = 0.0018
s = 0.0622
Annual growth rate:
Exp(365 × b) – 1
= Exp(365 × 0.0018) – 1
= 89.93%
Price channel spread:
Exp(4 × s) – 1
= Exp(4 × 0.0622) – 1
= 28.24%
March 27, 2025 calculations
Top border of price channel:
Exp(Y1,041)
= Exp(a + b × X1,041 + 2 × s)
= Exp(a + b × 1,513 + 2 × s)
= Exp(1.0871 + 0.0018 × 1,513 + 2 × 0.0622)
= Exp(3.8705)
= $47.97
Bottom border of price channel:
Exp(Y1,041)
= Exp(a + b × X1,041 – 2 × s)
= Exp(a + b × 1,513 – 2 × s)
= Exp(1.0871 + 0.0018 × 1,513 – 2 × 0.0622)
= Exp(3.6217)
= $37.40
January 26, 2026 calculations
Top border of price channel:
Exp(Y1,249)
= Exp(a + b × X1,249 + 2 × s)
= Exp(a + b × 1,818 + 2 × s)
= Exp(1.0871 + 0.0018 × 1,818 + 2 × 0.0622)
= Exp(4.4065)
= $81.98
Bottom border of price channel:
Exp(Y1,249)
= Exp(a + b × X1,249 – 2 × s)
= Exp(a + b × 1,818 – 2 × s)
= Exp(1.0871 + 0.0018 × 1,818 – 2 × 0.0622)
= Exp(4.1578)
= $63.93
Description
- The primary trend is increasing.
- The growth rate of the primary trend is 89.93% per annum.
- DAL price at the close of February 2, 2026 was $69.08 and was inside the primary price channel.
Secondary Trend
Start date: December 10, 2025
End date: February 2, 2026
a = 6.0212
b = -0.0010
s = 0.0209
Annual growth rate:
Exp(365 × b) – 1
= Exp(365 × -0.0010) – 1
= -30.29%
Price channel spread:
Exp(4 × s) – 1
= Exp(4 × 0.0209) – 1
= 8.70%
December 10, 2025 calculations
Top border of price channel:
Exp(Y1,219)
= Exp(a + b × X1,219 + 2 × s)
= Exp(a + b × 1,771 + 2 × s)
= Exp(6.0212 + -0.0010 × 1,771 + 2 × 0.0209)
= Exp(4.3121)
= $74.60
Bottom border of price channel:
Exp(Y1,219)
= Exp(a + b × X1,219 – 2 × s)
= Exp(a + b × 1,771 – 2 × s)
= Exp(6.0212 + -0.0010 × 1,771 – 2 × 0.0209)
= Exp(4.2287)
= $68.63
February 2, 2026 calculations
Top border of price channel:
Exp(Y1,254)
= Exp(a + b × X1,254 + 2 × s)
= Exp(a + b × 1,825 + 2 × s)
= Exp(6.0212 + -0.0010 × 1,825 + 2 × 0.0209)
= Exp(4.2587)
= $70.72
Bottom border of price channel:
Exp(Y1,254)
= Exp(a + b × X1,254 – 2 × s)
= Exp(a + b × 1,825 – 2 × s)
= Exp(6.0212 + -0.0010 × 1,825 – 2 × 0.0209)
= Exp(4.1753)
= $65.06
Description
- The secondary trend is decreasing.
- The decline rate of the secondary trend is 30.29% per annum.
- DAL price at the close of February 2, 2026 was inside the secondary price channel.