Correlation Analysis
Charter Comm Inc Del CL A New vs Costco Wholesale Corp
CHTR vs COST
-0.646
Moderate inverse
When one moves up, the other tends to move down.
Charter Comm Inc Del CL A New
↗CHTR
Charter is the product of the 2016 merger of three cable companies, each with a decades-long history in the business: Legacy Charter, Time Warner Cable, and Bright House Networks. The firm now holds networks capable of providing television, internet access, and phone services to roughly 58 million US homes and businesses, around 35% of the country. Across this footprint, Charter serves 30 million residential and 2 million commercial customer accounts under the Spectrum brand, making it the second-largest US cable company behind Comcast. The firm also owns, in whole or in part, sports and news networks, including Spectrum SportsNet (Los Angeles Lakers), SportsNet LA (Los Angeles Dodgers), SportsNet New York (New York Mets), and Spectrum News NY1. Charter plans to acquire cable peer Cox.
Market cap 27.4B · 91,900 employees
Costco Wholesale Corp
↗COST
Founded in 1983, Costco Wholesale now operates a global chain of membership-based warehouse clubs, delivering high-quality goods and services at consistently low prices. As of its most recent fiscal year, Costco operated approximately 910 warehouses, serving more than 80 million members across its three geographic segments: Costco US (approximately 73% of total revenue), Costco Canada (13%), and Costco International (14%).Costco's core value proposition—quality products at unbeatable prices—has yielded consistently strong member renewal rates (93% in the US and Canada and nearly 90% internationally). About 55% of Costco's fiscal 2025 revenue came from its grocery offerings, and another 25% from general merchandise.
Market cap 451.9B
Time Series
Relative Performance
Who Moves First
COST leads CHTR by 1 day
COST tends to move before CHTR.
After testing 13 timing shifts, the strongest relationship was -0.646 (they moved in opposite directions).
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
-0.432
13 periods · Return correlation when both series rose
Both Falling
-0.125
11 periods · Return correlation when both series fell
Diverging
+0.186
11 periods · Return correlation when series moved apart
R-Squared
41.8%
Share of variance in one series explained by the other.
Trend Agreement
59.3%
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: [-0.677, -0.613]
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
Charter Comm Inc Del CL A New
CHTR
Market cap 27.4B · 91,900 employees
Stock · 1,254 raw → 1,254 prepared
Series B
Costco Wholesale Corp
COST
Market cap 451.9B
Stock · 1,254 raw → 1,254 prepared
Sign agreement
100.0%
How often both values share the same sign.
Zero crossings
3
Estimated crossover points between normalized spreads.
Slope
-0.9155
Linear regression slope.
Intercept
1060.6058
Linear regression intercept.
Related Extremes
Highest and Lowest Correlated
CHTR
Charter Comm Inc Del CL A New
Highest
-0.214
Johnson & Johnson
JNJ · 1,254 data points
Lowest
-0.902
Exxon Mobil Corporation
XOM · 1,254 data points
Saved 5 hours ago · ID: stock-chtr-vs-stock-cost-daily