Correlation Analysis
Costco Wholesale Corp vs LPL Financial Holdings Inc.
COST vs LPLA
+0.879
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
LPL Financial Holdings Inc.
↗LPLA
LPL Financial is the largest US independent broker-dealer, with more than 32,000 financial advisors affiliated with its platform and roughly 11 million customer accounts at the end of 2025. The firm earns the bulk of its profit from interest income earned on client cash balances and from advisory fees and commissions tied to the $2.4 trillion in assets under management or advisory on its platform at year-end 2025. LPL specializes in the provision of turnkey wealth management services for affiliated independent advisors, but maintains a diverse array of affiliation modalities, running the gamut from more traditional employee models to a pure RIA custody approach. It earns tuck-in revenue from recordkeeping fees and the provision of software tools and services to its advisor base.
Market cap 23.6B · 10,000 employees
Time Series
Relative Performance
Who Moves First
in sync
COST and LPLA tend to move at the same time.
After testing 13 timing shifts, the strongest relationship was +0.879 (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
+0.501
14 periods · Return correlation when both series rose
Both Falling
+0.615
6 periods · Return correlation when both series fell
Diverging
-0.464
15 periods · Return correlation when series moved apart
R-Squared
77.2%
Share of variance in one series explained by the other.
Trend Agreement
54.6%
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: [0.865, 0.891]
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
LPL Financial Holdings Inc.
LPLA
Market cap 23.6B · 10,000 employees
Stock · 1,254 raw → 1,254 prepared
Sign agreement
100.0%
How often both values share the same sign.
Zero crossings
3
Estimated crossover points between normalized spreads.
Slope
0.2968
Linear regression slope.
Intercept
45.0354
Linear regression intercept.
Related Extremes
Highest and Lowest Correlated
Saved 6 hours ago · ID: stock-cost-vs-stock-lpla-daily