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 decreasing.
- The decline rate of the primary trend is 93.64% per annum.
- DAL price at the close of April 24, 2025 was $42.02 and was higher than the top border of the primary price channel by $0.33 (0.79%). This indicates a possible reversal in the primary trend direction.
- The secondary trend is increasing.
- The growth rate of the secondary trend is 316.12% per annum.
- DAL price at the close of April 24, 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: January 21, 2025
End date: April 22, 2025
a = 17.3661
b = -0.0075
s = 0.0633
Annual growth rate:
Exp(365 × b) – 1
= Exp(365 × -0.0075) – 1
= -93.64%
Price channel spread:
Exp(4 × s) – 1
= Exp(4 × 0.0633) – 1
= 28.82%
January 21, 2025 calculations
Top border of price channel:
Exp(Y1,190)
= Exp(a + b × X1,190 + 2 × s)
= Exp(a + b × 1,730 + 2 × s)
= Exp(17.3661 + -0.0075 × 1,730 + 2 × 0.0633)
= Exp(4.4323)
= $84.13
Bottom border of price channel:
Exp(Y1,190)
= Exp(a + b × X1,190 – 2 × s)
= Exp(a + b × 1,730 – 2 × s)
= Exp(17.3661 + -0.0075 × 1,730 – 2 × 0.0633)
= Exp(4.1791)
= $65.30
April 22, 2025 calculations
Top border of price channel:
Exp(Y1,253)
= Exp(a + b × X1,253 + 2 × s)
= Exp(a + b × 1,821 + 2 × s)
= Exp(17.3661 + -0.0075 × 1,821 + 2 × 0.0633)
= Exp(3.7453)
= $42.32
Bottom border of price channel:
Exp(Y1,253)
= Exp(a + b × X1,253 – 2 × s)
= Exp(a + b × 1,821 – 2 × s)
= Exp(17.3661 + -0.0075 × 1,821 – 2 × 0.0633)
= Exp(3.4921)
= $32.85
Description
- The primary trend is decreasing.
- The decline rate of the primary trend is 93.64% per annum.
- DAL price at the close of April 24, 2025 was $42.02 and was higher than the top border of the primary price channel by $0.33 (0.79%). This indicates a possible reversal in the primary trend direction.
Secondary Trend
Start date: April 3, 2025
End date: April 24, 2025
a = -3.3940
b = 0.0039
s = 0.0470
Annual growth rate:
Exp(365 × b) – 1
= Exp(365 × 0.0039) – 1
= 316.12%
Price channel spread:
Exp(4 × s) – 1
= Exp(4 × 0.0470) – 1
= 20.69%
April 3, 2025 calculations
Top border of price channel:
Exp(Y1,241)
= Exp(a + b × X1,241 + 2 × s)
= Exp(a + b × 1,802 + 2 × s)
= Exp(-3.3940 + 0.0039 × 1,802 + 2 × 0.0470)
= Exp(3.7393)
= $42.07
Bottom border of price channel:
Exp(Y1,241)
= Exp(a + b × X1,241 – 2 × s)
= Exp(a + b × 1,802 – 2 × s)
= Exp(-3.3940 + 0.0039 × 1,802 – 2 × 0.0470)
= Exp(3.5512)
= $34.86
April 24, 2025 calculations
Top border of price channel:
Exp(Y1,255)
= Exp(a + b × X1,255 + 2 × s)
= Exp(a + b × 1,823 + 2 × s)
= Exp(-3.3940 + 0.0039 × 1,823 + 2 × 0.0470)
= Exp(3.8213)
= $45.66
Bottom border of price channel:
Exp(Y1,255)
= Exp(a + b × X1,255 – 2 × s)
= Exp(a + b × 1,823 – 2 × s)
= Exp(-3.3940 + 0.0039 × 1,823 – 2 × 0.0470)
= Exp(3.6333)
= $37.84
Description
- The secondary trend is increasing.
- The growth rate of the secondary trend is 316.12% per annum.
- DAL price at the close of April 24, 2025 was inside the secondary price channel.