SeriesMagCorrSyncOverlapThrough
Correlation
+71%
of % moves
In sync
42%
of periods
History
60
months · through 2026-04
These move in the same direction about 42% of the time
When one swings, the other often swings by a similar amount (~50% of the pattern is shared).
Roughly random — these don't track each other in a meaningful way.
Time Series
Both lines start at the same point — easy to compare when growth rates are similar.
What to Watch
Unusual right now
Recently looser than usual — the pair is behaving differently than its long-run pattern.
Aaa Corporate Bond Yield moves ~16 months before COST
Watch Aaa Corporate Bond Yield for an early read on COST.
Decouples in drawdowns
The relationship weakens when both prices are falling — don't count on this pair as a hedge under stress.
Flips between sync and inverse
Sometimes the two move together, sometimes opposite. Don't treat this as a stable signal.
Advanced
Statistics
In sync(i)
42.4%
Headline metric
Movement correlation(i)
+71%
Based on % moves
95% CI
+56% → +82%
Likely range of correlation
Pipeline
Pipeline Summary
60 paired data points survived the monthly window.
Raw input
1,255
1,288
Normalized
1,255
1,288
Prepared
61
1,288
Aligned
60
60
Invalid removed
Explore
Top 5 by absolute correlation
Ranked across both sides of this comparison using the same dense row format as the single-symbol correlations view.
R²(i)
50.4%
Variance explained
Significance
p < 0.001
Statistical confidence
Data points
60
Thin
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: -18 to 18 months.
Selected shift
-16 months
Correlation at this shift
+91%
+20% stronger than no-shift baseline
Aaa Corporate Bond Yield shifted 16 months later. Reads: "Does Costco Wholesale Corp. (COST) today line up with Aaa Corporate Bond Yield 16 months ago?"
44 overlapping points at this shift
Baseline
+71%
No-shift correlation, matching the main time-series chart above.
Peak shift
-16 months
+91%
A non-zero peak suggests one series lines up better when shifted against the other.
Stability
How the correlation evolves over time. A stable line means the relationship is reliable; large swings signal regime-dependent behavior.
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
-55%
18 periods · Return correlation when both series rose
Both Falling
-1%
7 periods · Return correlation when both series fell
Diverging
-71%
34 periods · Return correlation when series moved apart
Scatter
0
A: 0 / B: 0
Duplicates removed
0
A: 0 / B: 0
Alignment drops
1,229
A: 1 / B: 1228
Series A
COST
Stock · 1,255 raw → 61 prepared
Series B
Aaa Corporate Bond Yield
AAA
FRED · 1,288 raw → 1,288 prepared
Sign agreement
100.0%
How often both values share the same sign.
Zero crossings
1
Estimated crossover points between normalized spreads.
Slope
0.0031
Linear regression slope.
Intercept
2.4269
Linear regression intercept.
Saved 2 days ago · ID: fred-aaa_stock-cost_5y