Correlation Analysis
Tesla, Inc. Common Stock vs eBay Inc
TSLA vs EBAY
+0.719
Strong positive
When one moves up, the other tends to follow.
Tesla, Inc. Common Stock
↗TSLA
Tesla is a vertically integrated battery electric vehicle automaker and developer of real world artificial intelligence software, which includes autonomous driving and humanoid robots. The company has multiple vehicles in its fleet, which include luxury and midsize sedans, crossover SUVs, a light truck, and a semi truck. Tesla also plans to begin selling a sports car and offer a robotaxi service. Global deliveries in 2025 were nearly 1.64 million vehicles. The company sells batteries for stationary storage for residential and commercial properties including utilities and solar panels and solar roofs for energy generation. Tesla also owns a fast-charging network and an auto insurance business.
Market cap 1.3T
eBay Inc
↗EBAY
EBay operates one of the largest e-commerce marketplaces in the world, with $79.6 billion in 2025 gross merchandise volume, rendering the firm a top 10 global e-commerce company. It generates sales from listing fees, advertising, revenue-sharing arrangements with service providers, and managed payments, with its platform connecting about 135 million buyers and roughly 20 million sellers across almost 190 global markets at the end of 2025. EBay generates just north of 50% of its GMV in international markets, with a large presence in the UK, Germany, and Australia.
Market cap 43.8B · 12,300 employees
Time Series
Relative Performance
Who Moves First
EBAY leads TSLA by 6 days
EBAY tends to move before TSLA.
After testing 13 timing shifts, the strongest relationship was +0.733 (they moved in the same direction).
Do They Crash Together?
Correlation by Market Regime
How these series behave when markets are rising, falling, or diverging. A correlation that holds in drawdowns is very different from one that only works in rallies.
Both Rising
-0.079
14 periods · Return correlation when both series rose
Both Falling
+0.420
10 periods · Return correlation when both series fell
Diverging
-0.712
11 periods · Return correlation when series moved apart
R-Squared
51.7%
Share of variance in one series explained by the other.
Trend Agreement
58.4%
How often both series moved in the same direction period-to-period.
Overlap Quality
1,254
Deep shared window — 1,254 usable pairs.
Significance
p < 0.001
95% CI: [0.691, 0.745]
Scatter
XY Regression
Pipeline
Data quality details
Pipeline
Data quality details
Pipeline Summary
1,254 paired data points survived the daily window.
Raw input
1,254
1,254
Normalized
1,254
1,254
Prepared
1,254
1,254
Aligned
1,254
1,254
Invalid removed
0
A: 0 / B: 0
Duplicates removed
0
A: 0 / B: 0
Alignment drops
0
A: 0 / B: 0
Series A
Tesla, Inc. Common Stock
TSLA
Market cap 1.3T
Stock · 1,254 raw → 1,254 prepared
Series B
eBay Inc
EBAY
Market cap 43.8B · 12,300 employees
Stock · 1,254 raw → 1,254 prepared
Sign agreement
100.0%
How often both values share the same sign.
Zero crossings
47
Estimated crossover points between normalized spreads.
Slope
0.1399
Linear regression slope.
Intercept
21.6122
Linear regression intercept.
Related Extremes
Highest and Lowest Correlated
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