Correlation Analysis
Costco Wholesale Corp vs Robinhood Markets, Inc. Class A Common Stock
COST vs HOOD
+0.667
Strong positive
When one moves up, the other tends to follow.
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
Robinhood Markets, Inc. Class A Common Stock
↗HOOD
Robinhood is a diversified financial services provider best known for its retail brokerage platform, which historically caters to a young, risk-seeking clientele that trades heavily on margin and in higher-risk asset classes like options, futures, cryptocurrencies, and more recently, in prediction markets. As those customers' financial needs have begun to mature, Robinhood has rolled out a suite of more conventional products, from retirement accounts to high-yield cash sweep accounts to nascent advisory services (Robinhood Strategies). With $322 billion in customer assets and 27 million active accounts at year-end 2025, the firm has emerged as a significant player in the large and quickly growing US brokerage market.
Market cap 62.8B · 2,900 employees
Time Series
Relative Performance
Who Moves First
COST leads HOOD by 6 days
COST tends to move before HOOD.
After testing 13 timing shifts, the strongest relationship was +0.677 (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
+0.262
11 periods · Return correlation when both series rose
Both Falling
+0.198
5 periods · Return correlation when both series fell
Diverging
-0.703
19 periods · Return correlation when series moved apart
R-Squared
44.4%
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
1,177
Deep shared window — 1,177 usable pairs.
Significance
p < 0.001
95% CI: [0.634, 0.697]
Scatter
XY Regression
Pipeline
Data quality details
Pipeline
Data quality details
Pipeline Summary
1,177 paired data points survived the daily window.
Raw input
1,254
1,177
Normalized
1,254
1,177
Prepared
1,254
1,177
Aligned
1,177
1,177
Invalid removed
0
A: 0 / B: 0
Duplicates removed
0
A: 0 / B: 0
Alignment drops
77
A: 77 / B: 0
Series A
Costco Wholesale Corp
COST
Market cap 451.9B
Stock · 1,254 raw → 1,254 prepared
Series B
Robinhood Markets, Inc. Class A Common Stock
HOOD
Market cap 62.8B · 2,900 employees
Stock · 1,177 raw → 1,177 prepared
Sign agreement
100.0%
How often both values share the same sign.
Zero crossings
3
Estimated crossover points between normalized spreads.
Slope
0.1183
Linear regression slope.
Intercept
-47.2162
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
HOOD
Robinhood Markets, Inc. Class A Common Stock
Highest
+0.884
JPMorgan Chase & Co.
JPM · 1,177 data points
Lowest
+0.288
Exxon Mobil Corporation
XOM · 1,177 data points
Saved 6 hours ago · ID: stock-cost-vs-stock-hood-daily