Western Digital Corporation (WDC)
Western Digital Corporation (WDC, commonly known as Western Digital or WD) is an American computer hard disk drive manufacturer and data storage company, headquartered in San Jose, California. It designs, manufactures and sells data technology products, including storage devices, data center systems and cloud storage services.
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 48.99% per annum.
- WDC price at the close of April 3, 2025 was $34.15 and was lower than the bottom border of the primary price channel by $17.97 (34.47%). This indicates a possible reversal in the primary trend direction.
- The secondary trend is decreasing.
- The decline rate of the secondary trend is 17.48% per annum.
- WDC price at the close of April 3, 2025 was lower than the bottom border of the secondary price channel by $5.77 (14.45%).
- 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 WDC 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 14, 2022
End date: December 12, 2024
a = 2.1886
b = 0.0011
s = 0.1132
Annual growth rate:
Exp(365 × b) – 1
= Exp(365 × 0.0011) – 1
= 48.99%
Price channel spread:
Exp(4 × s) – 1
= Exp(4 × 0.1132) – 1
= 57.24%
September 14, 2022 calculations
Top border of price channel:
Exp(Y615)
= Exp(a + b × X615 + 2 × s)
= Exp(a + b × 891 + 2 × s)
= Exp(2.1886 + 0.0011 × 891 + 2 × 0.1132)
= Exp(3.3881)
= $29.61
Bottom border of price channel:
Exp(Y615)
= Exp(a + b × X615 – 2 × s)
= Exp(a + b × 891 – 2 × s)
= Exp(2.1886 + 0.0011 × 891 – 2 × 0.1132)
= Exp(2.9355)
= $18.83
December 12, 2024 calculations
Top border of price channel:
Exp(Y1,180)
= Exp(a + b × X1,180 + 2 × s)
= Exp(a + b × 1,711 + 2 × s)
= Exp(2.1886 + 0.0011 × 1,711 + 2 × 0.1132)
= Exp(4.2838)
= $72.51
Bottom border of price channel:
Exp(Y1,180)
= Exp(a + b × X1,180 – 2 × s)
= Exp(a + b × 1,711 – 2 × s)
= Exp(2.1886 + 0.0011 × 1,711 – 2 × 0.1132)
= Exp(3.8311)
= $46.11
Description
- The primary trend is increasing.
- The growth rate of the primary trend is 48.99% per annum.
- WDC price at the close of April 3, 2025 was $34.15 and was lower than the bottom border of the primary price channel by $17.97 (34.47%). This indicates a possible reversal in the primary trend direction.
Secondary Trend
Start date: March 26, 2024
End date: April 2, 2025
a = 4.7864
b = -0.0005
s = 0.0701
Annual growth rate:
Exp(365 × b) – 1
= Exp(365 × -0.0005) – 1
= -17.48%
Price channel spread:
Exp(4 × s) – 1
= Exp(4 × 0.0701) – 1
= 32.36%
March 26, 2024 calculations
Top border of price channel:
Exp(Y999)
= Exp(a + b × X999 + 2 × s)
= Exp(a + b × 1,450 + 2 × s)
= Exp(4.7864 + -0.0005 × 1,450 + 2 × 0.0701)
= Exp(4.1635)
= $64.29
Bottom border of price channel:
Exp(Y999)
= Exp(a + b × X999 – 2 × s)
= Exp(a + b × 1,450 – 2 × s)
= Exp(4.7864 + -0.0005 × 1,450 – 2 × 0.0701)
= Exp(3.8831)
= $48.57
April 2, 2025 calculations
Top border of price channel:
Exp(Y1,254)
= Exp(a + b × X1,254 + 2 × s)
= Exp(a + b × 1,822 + 2 × s)
= Exp(4.7864 + -0.0005 × 1,822 + 2 × 0.0701)
= Exp(3.9677)
= $52.86
Bottom border of price channel:
Exp(Y1,254)
= Exp(a + b × X1,254 – 2 × s)
= Exp(a + b × 1,822 – 2 × s)
= Exp(4.7864 + -0.0005 × 1,822 – 2 × 0.0701)
= Exp(3.6873)
= $39.94
Description
- The secondary trend is decreasing.
- The decline rate of the secondary trend is 17.48% per annum.
- WDC price at the close of April 3, 2025 was lower than the bottom border of the secondary price channel by $5.77 (14.45%).