Correlation Analysis
Costco Wholesale Corp vs Truist Financial Corporation
COST vs TFC
-0.219
Light inverse
When one moves up, the other tends to move down.
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
Truist Financial Corporation
↗TFC
Truist Financial is one of the three super-regional banks in the US, with around $565 billion in assets as of the fourth quarter of 2025. Truist emerged from the combination of BB&T and SunTrust in 2019. Based in Charlotte, North Carolina, the bank's footprint is largely in the Mid-Atlantic and Southeast. Apart from retail and commercial banking operations, the bank also offers online and point-of-sale consumer lending, cards, wealth management, investment banking, and other banking services.
Market cap 59.1B · 38,711 employees
Time Series
Relative Performance
Who Moves First
TFC leads COST by 6 days
TFC tends to move before COST.
After testing 13 timing shifts, the strongest relationship was -0.225 (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
+0.174
13 periods · Return correlation when both series rose
Both Falling
+0.239
7 periods · Return correlation when both series fell
Diverging
-0.695
15 periods · Return correlation when series moved apart
R-Squared
4.8%
Share of variance in one series explained by the other.
Trend Agreement
57.0%
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: [-0.271, -0.166]
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
Costco Wholesale Corp
COST
Market cap 451.9B
Stock · 1,254 raw → 1,254 prepared
Series B
Truist Financial Corporation
TFC
Market cap 59.1B · 38,711 employees
Stock · 1,254 raw → 1,254 prepared
Sign agreement
100.0%
How often both values share the same sign.
Zero crossings
5
Estimated crossover points between normalized spreads.
Slope
-0.0097
Linear regression slope.
Intercept
51.6202
Linear regression intercept.
Related Extremes
Highest and Lowest Correlated
Saved 7 hours ago · ID: stock-cost-vs-stock-tfc-daily