eBay Inc (EBAY)
eBay Inc. is a leading American multinational e-commerce platform headquartered in San Jose, California, specializing in consumer-to-consumer and business-to-consumer sales through its online marketplace. Since its inception, eBay has transformed the way individuals and businesses connect and transact globally, offering a diverse range of products and services across various categories. The company emphasizes user experience and security, fostering a vibrant community of buyers and sellers. Its innovative approach to e-commerce, including features like auctions and fixed-price listings, positions eBay as a key player in the rapidly evolving digital retail landscape. With a robust and scalable platform, eBay continues to adapt and grow in response to changing market dynamics and consumer preferences.
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 50.22% per annum.
- EBAY price at the close of December 19, 2025 was $84.66 and was inside the primary price channel.
- The secondary trend is decreasing.
- The decline rate of the secondary trend is 36.96% per annum.
- EBAY price at the close of December 19, 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 EBAY 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: November 14, 2025
a = 2.5239
b = 0.0011
s = 0.0638
Annual growth rate:
Exp(365 × b) – 1
= Exp(365 × 0.0011) – 1
= 50.22%
Price channel spread:
Exp(4 × s) – 1
= Exp(4 × 0.0638) – 1
= 29.09%
September 7, 2023 calculations
Top border of price channel:
Exp(Y681)
= Exp(a + b × X681 + 2 × s)
= Exp(a + b × 990 + 2 × s)
= Exp(2.5239 + 0.0011 × 990 + 2 × 0.0638)
= Exp(3.7552)
= $42.74
Bottom border of price channel:
Exp(Y681)
= Exp(a + b × X681 – 2 × s)
= Exp(a + b × 990 – 2 × s)
= Exp(2.5239 + 0.0011 × 990 – 2 × 0.0638)
= Exp(3.4999)
= $33.11
November 14, 2025 calculations
Top border of price channel:
Exp(Y1,231)
= Exp(a + b × X1,231 + 2 × s)
= Exp(a + b × 1,789 + 2 × s)
= Exp(2.5239 + 0.0011 × 1,789 + 2 × 0.0638)
= Exp(4.6459)
= $104.16
Bottom border of price channel:
Exp(Y1,231)
= Exp(a + b × X1,231 – 2 × s)
= Exp(a + b × 1,789 – 2 × s)
= Exp(2.5239 + 0.0011 × 1,789 – 2 × 0.0638)
= Exp(4.3906)
= $80.69
Description
- The primary trend is increasing.
- The growth rate of the primary trend is 50.22% per annum.
- EBAY price at the close of December 19, 2025 was $84.66 and was inside the primary price channel.
Secondary Trend
Start date: August 6, 2025
End date: December 19, 2025
a = 6.7098
b = -0.0013
s = 0.0413
Annual growth rate:
Exp(365 × b) – 1
= Exp(365 × -0.0013) – 1
= -36.96%
Price channel spread:
Exp(4 × s) – 1
= Exp(4 × 0.0413) – 1
= 17.97%
August 6, 2025 calculations
Top border of price channel:
Exp(Y1,160)
= Exp(a + b × X1,160 + 2 × s)
= Exp(a + b × 1,689 + 2 × s)
= Exp(6.7098 + -0.0013 × 1,689 + 2 × 0.0413)
= Exp(4.6573)
= $105.36
Bottom border of price channel:
Exp(Y1,160)
= Exp(a + b × X1,160 – 2 × s)
= Exp(a + b × 1,689 – 2 × s)
= Exp(6.7098 + -0.0013 × 1,689 – 2 × 0.0413)
= Exp(4.4921)
= $89.31
December 19, 2025 calculations
Top border of price channel:
Exp(Y1,255)
= Exp(a + b × X1,255 + 2 × s)
= Exp(a + b × 1,824 + 2 × s)
= Exp(6.7098 + -0.0013 × 1,824 + 2 × 0.0413)
= Exp(4.4867)
= $88.83
Bottom border of price channel:
Exp(Y1,255)
= Exp(a + b × X1,255 – 2 × s)
= Exp(a + b × 1,824 – 2 × s)
= Exp(6.7098 + -0.0013 × 1,824 – 2 × 0.0413)
= Exp(4.3214)
= $75.30
Description
- The secondary trend is decreasing.
- The decline rate of the secondary trend is 36.96% per annum.
- EBAY price at the close of December 19, 2025 was inside the secondary price channel.