Correlation Analysis
Cincinnati Financial Corp vs Costco Wholesale Corp
CINF vs COST
+0.780
Strong positive
When one moves up, the other tends to follow.
Cincinnati Financial Corp
↗CINF
Cincinnati Financial Corp is a property and casualty insurance company that generates income through written premiums. A select group of independent agencies actively markets the company's business, home, and automotive insurance within their communities. These agents offer the company's personal lines as well as its standard market, excess, and surplus commercial line policies in many regions in the United States. Cincinnati Financial also offers leasing and financing services. The company operates in segments: Commercial lines insurance, Personal lines insurance, Excess and surplus lines insurance, Life insurance, and Investments. The vast majority of the company's revenue is generated through commercial lines, followed by personal lines.
Market cap 24.9B · 5,705 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 CINF by 6 days
COST tends to move before CINF.
After testing 13 timing shifts, the strongest relationship was +0.781 (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
+0.085
14 periods · Return correlation when both series rose
Both Falling
N/A
4 periods · Return correlation when both series fell
Diverging
-0.546
17 periods · Return correlation when series moved apart
R-Squared
60.8%
Share of variance in one series explained by the other.
Trend Agreement
58.9%
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: [0.757, 0.801]
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
Cincinnati Financial Corp
CINF
Market cap 24.9B · 5,705 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
8.2722
Linear regression slope.
Intercept
-352.0093
Linear regression intercept.
Related Extremes
Highest and Lowest Correlated
Saved 5 hours ago · ID: stock-cinf-vs-stock-cost-daily