Correlation Analysis
Costco Wholesale Corp vs Grayscale Bitcoin Trust ETF
COST vs GBTC
+0.928
Very 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
Grayscale Bitcoin Trust ETF
GBTC
Time Series
Relative Performance
Who Moves First
COST leads GBTC by 4 days
COST tends to move before GBTC.
After testing 13 timing shifts, the strongest relationship was +0.930 (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
+0.209
15 periods · Return correlation when both series rose
Both Falling
+0.150
10 periods · Return correlation when both series fell
Diverging
-0.951
10 periods · Return correlation when series moved apart
R-Squared
86.2%
Share of variance in one series explained by the other.
Trend Agreement
58.1%
How often both series moved in the same direction period-to-period.
Overlap Quality
1,066
Deep shared window — 1,066 usable pairs.
Significance
p < 0.001
95% CI: [0.920, 0.936]
Scatter
XY Regression
Pipeline
Data quality details
Pipeline
Data quality details
Pipeline Summary
1,066 paired data points survived the daily window.
Raw input
1,254
1,066
Normalized
1,254
1,066
Prepared
1,254
1,066
Aligned
1,066
1,066
Invalid removed
0
A: 0 / B: 0
Duplicates removed
0
A: 0 / B: 0
Alignment drops
188
A: 188 / B: 0
Series A
Costco Wholesale Corp
COST
Market cap 451.9B
Stock · 1,254 raw → 1,254 prepared
Series B
Grayscale Bitcoin Trust ETF
GBTC
Stock · 1,066 raw → 1,066 prepared
Sign agreement
100.0%
How often both values share the same sign.
Zero crossings
7
Estimated crossover points between normalized spreads.
Slope
0.1231
Linear regression slope.
Intercept
-44.8062
Linear regression intercept.
Related Extremes
Highest and Lowest Correlated
Saved 7 hours ago · ID: stock-cost-vs-stock-gbtc-daily