SeriesMagCorrOverlapThrough
These move together about 74% of the time
Very strong positive
Strong enough to use as a signal — read the stability and regime notes below before relying on it.
Broadcom is one of the largest semiconductor companies in the world and has also expanded into infrastructure software. Its semiconductors primarily serve computing and networking, with custom AI accelerators now accounting for the bulk of the business. It is primarily a fabless designer, but holds some manufacturing in-house, such as for its best-of-breed film bulk acoustic resonator filters that sell into the Apple iPhone. In software, it sells virtualization, infrastructure, and security software to large enterprises, financial institutions, and governments. Broadcom is the product of consolidation. Its businesses are an amalgamation of former companies like legacy Broadcom and Avago Tech
Market cap 2T · 33,000 employees
State Street SPDR S&P 500 ETF Trust
SPY
What to Watch
Holds across regimes
Correlation is similar when markets rise (+36%) and fall (+34%) — reliable in both directions.
Mostly stable
Correlation drifts a little but stays in the same neighbourhood.
Time Series
Time-Shifted Correlation
See how correlation changes when one series is offset in time. A taller bar at a non-zero shift means the two move together better when one leads the other — that's a potential lead/lag signal.
Correlation by shift
Click a bar to inspect. Range: -6 to 6 days.
Selected shift
No shift
Correlation at this shift
+96%
No shift — both series at their actual dates.
1,255 overlapping points at this shift
Time series with State Street SPDR S&P 500 ETF Trust at original dates
Indexed to 100 at start
Deep Dive
Stability
How the correlation evolves over time. A stable line means the relationship is reliable; large swings signal regime-dependent behavior.
Corr
+96%
Pearson correlation
95% CI
+96% → +97%
Likely range
R²
92.8%
Variance explained
Trend agreement
73.7%
Same-direction moves
Significance
p < 0.001
Statistical confidence
Data points
1,255
Deep
Pipeline
Pipeline Summary
1,255 paired data points survived the daily window.
Raw input
1,255
1,255
Normalized
1,255
1,255
Prepared
1,255
1,255
Aligned
1,255
1,255
Invalid removed
Explore
The strongest positive and inverse pairs we’ve saved for each side of this comparison — good jumping-off points if this result raised a question.
Do They Crash Together?
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
+36%
114 periods · Return correlation when both series rose
Both Falling
+34%
94 periods · Return correlation when both series fell
Diverging
-33%
41 periods · Return correlation when series moved apart
Scatter
0
A: 0 / B: 0
Duplicates removed
0
A: 0 / B: 0
Alignment drops
0
A: 0 / B: 0
Series A
Broadcom Inc. Common Stock
AVGO
Market cap 2T · 33,000 employees
Stock · 1,255 raw → 1,255 prepared
Series B
State Street SPDR S&P 500 ETF Trust
SPY
Stock · 1,255 raw → 1,255 prepared
Sign agreement
100.0%
How often both values share the same sign.
Zero crossings
55
Estimated crossover points between normalized spreads.
Slope
0.9056
Linear regression slope.
Intercept
375.9170
Linear regression intercept.
Saved 2 hours ago · ID: stock-avgo_stock-spy_5y
SPY
State Street SPDR S&P 500 ETF Trust
Strongest positive