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 290.00% per annum.
- TNDM price at the close of July 25, 2024 was $40.65 and was inside the primary price channel.
- The secondary trend is decreasing.
- The decline rate of the secondary trend is 63.82% per annum.
- TNDM price at the close of July 25, 2024 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 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: October 4, 2023
End date: July 24, 2024
a = -2.8798
b = 0.0037
s = 0.1329
Annual growth rate:
Exp(365 × b) – 1
= Exp(365 × 0.0037) – 1
= 290.00%
Price channel spread:
Exp(4 × s) – 1
= Exp(4 × 0.1329) – 1
= 70.13%
October 4, 2023 calculations
Top border of price channel:
Exp(Y1,055)
= Exp(a + b × X1,055 + 2 × s)
= Exp(a + b × 1,531 + 2 × s)
= Exp(-2.8798 + 0.0037 × 1,531 + 2 × 0.1329)
= Exp(3.0945)
= $22.08
Bottom border of price channel:
Exp(Y1,055)
= Exp(a + b × X1,055 – 2 × s)
= Exp(a + b × 1,531 – 2 × s)
= Exp(-2.8798 + 0.0037 × 1,531 – 2 × 0.1329)
= Exp(2.5631)
= $12.98
July 24, 2024 calculations
Top border of price channel:
Exp(Y1,256)
= Exp(a + b × X1,256 + 2 × s)
= Exp(a + b × 1,825 + 2 × s)
= Exp(-2.8798 + 0.0037 × 1,825 + 2 × 0.1329)
= Exp(4.1908)
= $66.07
Bottom border of price channel:
Exp(Y1,256)
= Exp(a + b × X1,256 – 2 × s)
= Exp(a + b × 1,825 – 2 × s)
= Exp(-2.8798 + 0.0037 × 1,825 – 2 × 0.1329)
= Exp(3.6594)
= $38.84
Description
- The primary trend is increasing.
- The growth rate of the primary trend is 290.00% per annum.
- TNDM price at the close of July 25, 2024 was $40.65 and was inside the primary price channel.
Secondary Trend
Start date: May 15, 2024
End date: July 25, 2024
a = 8.8057
b = -0.0028
s = 0.0703
Annual growth rate:
Exp(365 × b) – 1
= Exp(365 × -0.0028) – 1
= -63.82%
Price channel spread:
Exp(4 × s) – 1
= Exp(4 × 0.0703) – 1
= 32.46%
May 15, 2024 calculations
Top border of price channel:
Exp(Y1,209)
= Exp(a + b × X1,209 + 2 × s)
= Exp(a + b × 1,755 + 2 × s)
= Exp(8.8057 + -0.0028 × 1,755 + 2 × 0.0703)
= Exp(4.0579)
= $57.85
Bottom border of price channel:
Exp(Y1,209)
= Exp(a + b × X1,209 – 2 × s)
= Exp(a + b × 1,755 – 2 × s)
= Exp(8.8057 + -0.0028 × 1,755 – 2 × 0.0703)
= Exp(3.7767)
= $43.67
July 25, 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(8.8057 + -0.0028 × 1,826 + 2 × 0.0703)
= Exp(3.8601)
= $47.47
Bottom border of price channel:
Exp(Y1,257)
= Exp(a + b × X1,257 – 2 × s)
= Exp(a + b × 1,826 – 2 × s)
= Exp(8.8057 + -0.0028 × 1,826 – 2 × 0.0703)
= Exp(3.5790)
= $35.84
Description
- The secondary trend is decreasing.
- The decline rate of the secondary trend is 63.82% per annum.
- TNDM price at the close of July 25, 2024 was inside the secondary price channel.