Correlation Analysis
Costco Wholesale Corp vs International Flavors & Fragrances Inc.
COST vs IFF
-0.641
Moderate 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

International Flavors & Fragrances Inc.
↗IFF
International Flavors & Fragrances is the largest specialty ingredients producer globally. It sells ingredients for the food, beverage, health, household goods, personal care, and pharmaceutical industries. The company makes proprietary formulations, partnering with customers to deliver custom solutions. Through its taste and scent segments, which each generate around 25% of profits, IFF is a leading flavor and fragrances producer. The health and biosciences business, which generates 30% of profits, is a global leader in probiotics and enzymes. The remaining profits come from the food ingredients business, which sells texturants, plant-based proteins, and other ingredients, though IFF plans to divest this business in the future.
Market cap 18.3B · 21,500 employees
Time Series
Relative Performance
Who Moves First
in sync
COST and IFF tend to move at the same time.
After testing 13 timing shifts, the strongest relationship was -0.641 (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
+0.590
12 periods · Return correlation when both series rose
Both Falling
+0.515
7 periods · Return correlation when both series fell
Diverging
-0.651
16 periods · Return correlation when series moved apart
R-Squared
41.1%
Share of variance in one series explained by the other.
Trend Agreement
59.6%
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: [-0.673, -0.607]
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

International Flavors & Fragrances Inc.
IFF
Market cap 18.3B · 21,500 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
-0.0817
Linear regression slope.
Intercept
154.0368
Linear regression intercept.
Related Extremes
Highest and Lowest Correlated
COST
Costco Wholesale Corp
Highest
+0.977
Republic Services Inc.
RSG · 1,254 data points
Lowest
-0.912
Fiserv, Inc. Common Stock
FISV · 644 data points
IFF
International Flavors & Fragrances Inc.
Highest
-0.097
Johnson & Johnson
JNJ · 1,254 data points
Lowest
-0.814
Exxon Mobil Corporation
XOM · 1,254 data points
Saved 9 hours ago · ID: stock-cost-vs-stock-iff-daily