# Abbott Laboratories (ABT)

Abbott Laboratories is an American multinational medical devices and health care company with headquarters in Abbott Park, Illinois, United States.

## 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 8.09% per annum.
• ABT price at the close of December 8, 2023 was \$104.51 and was inside the primary price channel.
• The secondary trend is increasing.
• The growth rate of the secondary trend is 212.27% per annum.
• ABT price at the close of December 8, 2023 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 ABT 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 28, 2021
End date: December 8, 2023

a = 5.0212

b = -0.0002

s = 0.0605

Annual growth rate:

Exp(365 × b) – 1
= Exp(365 × -0.0002) – 1
= -8.09%

Exp(4 × s) – 1
= Exp(4 × 0.0605) – 1
= 27.39%

#### January 28, 2021 calculations

Top border of price channel:

Exp(Y537)
= Exp(a + b × X537 + 2 × s)
= Exp(a + b × 780 + 2 × s)
= Exp(5.0212 + -0.0002 × 780 + 2 × 0.0605)
= Exp(4.9619)
= \$142.87

Bottom border of price channel:

Exp(Y537)
= Exp(a + b × X537 – 2 × s)
= Exp(a + b × 780 – 2 × s)
= Exp(5.0212 + -0.0002 × 780 – 2 × 0.0605)
= Exp(4.7198)
= \$112.15

#### December 8, 2023 calculations

Top border of price channel:

Exp(Y1,258)
= Exp(a + b × X1,258 + 2 × s)
= Exp(a + b × 1,824 + 2 × s)
= Exp(5.0212 + -0.0002 × 1,824 + 2 × 0.0605)
= Exp(4.7205)
= \$112.23

Bottom border of price channel:

Exp(Y1,258)
= Exp(a + b × X1,258 – 2 × s)
= Exp(a + b × 1,824 – 2 × s)
= Exp(5.0212 + -0.0002 × 1,824 – 2 × 0.0605)
= Exp(4.4784)
= \$88.10

### Secondary Trend

Start date: October 25, 2023
End date: December 8, 2023

a = -1.0285

b = 0.0031

s = 0.0143

Annual growth rate:

Exp(365 × b) – 1
= Exp(365 × 0.0031) – 1
= 212.27%

Exp(4 × s) – 1
= Exp(4 × 0.0143) – 1
= 5.89%

#### October 25, 2023 calculations

Top border of price channel:

Exp(Y1,227)
= Exp(a + b × X1,227 + 2 × s)
= Exp(a + b × 1,780 + 2 × s)
= Exp(-1.0285 + 0.0031 × 1,780 + 2 × 0.0143)
= Exp(4.5532)
= \$94.94

Bottom border of price channel:

Exp(Y1,227)
= Exp(a + b × X1,227 – 2 × s)
= Exp(a + b × 1,780 – 2 × s)
= Exp(-1.0285 + 0.0031 × 1,780 – 2 × 0.0143)
= Exp(4.4960)
= \$89.66

#### December 8, 2023 calculations

Top border of price channel:

Exp(Y1,258)
= Exp(a + b × X1,258 + 2 × s)
= Exp(a + b × 1,824 + 2 × s)
= Exp(-1.0285 + 0.0031 × 1,824 + 2 × 0.0143)
= Exp(4.6905)
= \$108.91

Bottom border of price channel:

Exp(Y1,258)
= Exp(a + b × X1,258 – 2 × s)
= Exp(a + b × 1,824 – 2 × s)
= Exp(-1.0285 + 0.0031 × 1,824 – 2 × 0.0143)
= Exp(4.6333)
= \$102.85