Delta Air Lines Inc (DAL)
Delta Air Lines, Inc., typically referred to as Delta, is one of the major airlines of the United States and a legacy carrier. It is headquartered in Atlanta, Georgia.
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 28.36% per annum.
- DAL price at the close of April 2, 2025 was $43.37 and was lower than the bottom border of the primary price channel by $3.35 (7.17%). This indicates a possible reversal in the primary trend direction.
- The secondary trend is decreasing.
- The decline rate of the secondary trend is 94.74% per annum.
- DAL price at the close of April 2, 2025 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: June 13, 2022
End date: March 7, 2025
a = 2.8228
b = 0.0007
s = 0.1134
Annual growth rate:
Exp(365 × b) – 1
= Exp(365 × 0.0007) – 1
= 28.36%
Price channel spread:
Exp(4 × s) – 1
= Exp(4 × 0.1134) – 1
= 57.40%
June 13, 2022 calculations
Top border of price channel:
Exp(Y552)
= Exp(a + b × X552 + 2 × s)
= Exp(a + b × 801 + 2 × s)
= Exp(2.8228 + 0.0007 × 801 + 2 × 0.1134)
= Exp(3.5974)
= $36.50
Bottom border of price channel:
Exp(Y552)
= Exp(a + b × X552 – 2 × s)
= Exp(a + b × 801 – 2 × s)
= Exp(2.8228 + 0.0007 × 801 – 2 × 0.1134)
= Exp(3.1438)
= $23.19
March 7, 2025 calculations
Top border of price channel:
Exp(Y1,237)
= Exp(a + b × X1,237 + 2 × s)
= Exp(a + b × 1,799 + 2 × s)
= Exp(2.8228 + 0.0007 × 1,799 + 2 × 0.1134)
= Exp(4.2800)
= $72.24
Bottom border of price channel:
Exp(Y1,237)
= Exp(a + b × X1,237 – 2 × s)
= Exp(a + b × 1,799 – 2 × s)
= Exp(2.8228 + 0.0007 × 1,799 – 2 × 0.1134)
= Exp(3.8264)
= $45.90
Description
- The primary trend is increasing.
- The growth rate of the primary trend is 28.36% per annum.
- DAL price at the close of April 2, 2025 was $43.37 and was lower than the bottom border of the primary price channel by $3.35 (7.17%). This indicates a possible reversal in the primary trend direction.
Secondary Trend
Start date: January 27, 2025
End date: April 2, 2025
a = 18.4911
b = -0.0081
s = 0.0529
Annual growth rate:
Exp(365 × b) – 1
= Exp(365 × -0.0081) – 1
= -94.74%
Price channel spread:
Exp(4 × s) – 1
= Exp(4 × 0.0529) – 1
= 23.59%
January 27, 2025 calculations
Top border of price channel:
Exp(Y1,209)
= Exp(a + b × X1,209 + 2 × s)
= Exp(a + b × 1,760 + 2 × s)
= Exp(18.4911 + -0.0081 × 1,760 + 2 × 0.0529)
= Exp(4.3939)
= $80.96
Bottom border of price channel:
Exp(Y1,209)
= Exp(a + b × X1,209 – 2 × s)
= Exp(a + b × 1,760 – 2 × s)
= Exp(18.4911 + -0.0081 × 1,760 – 2 × 0.0529)
= Exp(4.1821)
= $65.51
April 2, 2025 calculations
Top border of price channel:
Exp(Y1,255)
= Exp(a + b × X1,255 + 2 × s)
= Exp(a + b × 1,825 + 2 × s)
= Exp(18.4911 + -0.0081 × 1,825 + 2 × 0.0529)
= Exp(3.8694)
= $47.91
Bottom border of price channel:
Exp(Y1,255)
= Exp(a + b × X1,255 – 2 × s)
= Exp(a + b × 1,825 – 2 × s)
= Exp(18.4911 + -0.0081 × 1,825 – 2 × 0.0529)
= Exp(3.6576)
= $38.77
Description
- The secondary trend is decreasing.
- The decline rate of the secondary trend is 94.74% per annum.
- DAL price at the close of April 2, 2025 was inside the secondary price channel.