Tandem Diabetes Care Inc (TNDM)
Tandem Diabetes Care, Inc., a medical device company, designs, develops, and markets various products for people with insulin-dependent diabetes in the United States. The company is headquartered in San Diego, California.
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 168.43% per annum.
- TNDM price at the close of November 19, 2024 was $27.87 and was lower than the bottom border of the primary price channel by $15.45 (35.67%). This indicates a possible reversal in the primary trend direction.
- The secondary trend is decreasing.
- The decline rate of the secondary trend is 49.78% per annum.
- TNDM price at the close of November 19, 2024 was lower than the bottom border of the secondary price channel by $0.20 (0.70%).
- 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 TNDM 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 7, 2023
End date: September 30, 2024
a = -0.8585
b = 0.0027
s = 0.1564
Annual growth rate:
Exp(365 × b) – 1
= Exp(365 × 0.0027) – 1
= 168.43%
Price channel spread:
Exp(4 × s) – 1
= Exp(4 × 0.1564) – 1
= 86.91%
September 7, 2023 calculations
Top border of price channel:
Exp(Y954)
= Exp(a + b × X954 + 2 × s)
= Exp(a + b × 1,387 + 2 × s)
= Exp(-0.8585 + 0.0027 × 1,387 + 2 × 0.1564)
= Exp(3.2065)
= $24.69
Bottom border of price channel:
Exp(Y954)
= Exp(a + b × X954 – 2 × s)
= Exp(a + b × 1,387 – 2 × s)
= Exp(-0.8585 + 0.0027 × 1,387 – 2 × 0.1564)
= Exp(2.5810)
= $13.21
September 30, 2024 calculations
Top border of price channel:
Exp(Y1,221)
= Exp(a + b × X1,221 + 2 × s)
= Exp(a + b × 1,776 + 2 × s)
= Exp(-0.8585 + 0.0027 × 1,776 + 2 × 0.1564)
= Exp(4.2588)
= $70.73
Bottom border of price channel:
Exp(Y1,221)
= Exp(a + b × X1,221 – 2 × s)
= Exp(a + b × 1,776 – 2 × s)
= Exp(-0.8585 + 0.0027 × 1,776 – 2 × 0.1564)
= Exp(3.6334)
= $37.84
Description
- The primary trend is increasing.
- The growth rate of the primary trend is 168.43% per annum.
- TNDM price at the close of November 19, 2024 was $27.87 and was lower than the bottom border of the primary price channel by $15.45 (35.67%). This indicates a possible reversal in the primary trend direction.
Secondary Trend
Start date: May 3, 2024
End date: November 19, 2024
a = 6.9733
b = -0.0019
s = 0.0966
Annual growth rate:
Exp(365 × b) – 1
= Exp(365 × -0.0019) – 1
= -49.78%
Price channel spread:
Exp(4 × s) – 1
= Exp(4 × 0.0966) – 1
= 47.15%
May 3, 2024 calculations
Top border of price channel:
Exp(Y1,119)
= Exp(a + b × X1,119 + 2 × s)
= Exp(a + b × 1,626 + 2 × s)
= Exp(6.9733 + -0.0019 × 1,626 + 2 × 0.0966)
= Exp(4.0982)
= $60.23
Bottom border of price channel:
Exp(Y1,119)
= Exp(a + b × X1,119 – 2 × s)
= Exp(a + b × 1,626 – 2 × s)
= Exp(6.9733 + -0.0019 × 1,626 – 2 × 0.0966)
= Exp(3.7120)
= $40.93
November 19, 2024 calculations
Top border of price channel:
Exp(Y1,257)
= Exp(a + b × X1,257 + 2 × s)
= Exp(a + b × 1,826 + 2 × s)
= Exp(6.9733 + -0.0019 × 1,826 + 2 × 0.0966)
= Exp(3.7208)
= $41.30
Bottom border of price channel:
Exp(Y1,257)
= Exp(a + b × X1,257 – 2 × s)
= Exp(a + b × 1,826 – 2 × s)
= Exp(6.9733 + -0.0019 × 1,826 – 2 × 0.0966)
= Exp(3.3346)
= $28.07
Description
- The secondary trend is decreasing.
- The decline rate of the secondary trend is 49.78% per annum.
- TNDM price at the close of November 19, 2024 was lower than the bottom border of the secondary price channel by $0.20 (0.70%).