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Correlation Analysis

Costco Wholesale Corp vs SYNCHRONY FINANCIAL

COST vs SYF

+0.757

Strong positive

When one moves up, the other tends to follow.

COST logo

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

S

SYNCHRONY FINANCIAL

SYF

Synchrony Financial, originally a spinoff of GE Capital's retail financing business, is the largest provider of private-label credit cards in the United States by both outstanding receivables and purchasing volume. Synchrony partners with other firms to market its credit products in their physical stores as well as on their websites and mobile applications. Synchrony operates through three segments: retail card (private-label and co-branded general-purpose credit cards), payment solutions (promotional financing for large ticket purchases), and CareCredit (financing for elective healthcare procedures).

Market cap 24.1B · 20,000 employees

Apr 9, 2021 — Apr 7, 2026Daily1,254 data pointsStockStockConsumer

Time Series

Relative Performance

Green: COSTGray: SYF36 of 1,254 points (sampled)

Who Moves First

COST leads SYF by 6 days

COST tends to move before SYF.

After testing 13 timing shifts, the strongest relationship was +0.759 (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

+0.473

14 periods · Return correlation when both series rose

Both Falling

+0.558

7 periods · Return correlation when both series fell

Diverging

-0.831

14 periods · Return correlation when series moved apart

R-Squared

57.3%

Share of variance in one series explained by the other.

Trend Agreement

56.0%

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: [0.733, 0.780]

Scatter

XY Regression

3064006008001,0001,13423.830405060708089.2Costco Wholesale CorpSYNCHRONY FINANCIALData pointsFit (r = 0.757)

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

COST logo

Costco Wholesale Corp

COST

Market cap 451.9B

Stock · 1,254 raw → 1,254 prepared

Series B

S

SYNCHRONY FINANCIAL

SYF

Market cap 24.1B · 20,000 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

0.0532

Linear regression slope.

Intercept

11.1541

Linear regression intercept.

Related Extremes

Highest and Lowest Correlated

Saved 7 hours ago · ID: stock-cost-vs-stock-syf-daily