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RBC Bearings Incorporated (RBC) vs PPI: All Commodities
Correlation
of % moves
+14%
In sync
of periods
58%
History
monthsmonths · through 2026-04
50
These move in the same direction about 58% of the time
Their swing sizes only faintly line up (~2% of the pattern is shared).
A real but noisy link — useful as context, risky as a standalone signal.
On a log scale so equal % moves take equal vertical space — best when one series has grown much faster than the other.
What to Watch
PPI: All Commodities moves ~4 months before RBC
Watch PPI: All Commodities for an early read on RBC.
Holds in both up and down markets
The relationship is similar whether prices are rising or falling — reliable in both directions.
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)
58.3%
Headline metric
Movement correlation(i)
+14%
Based on % moves
95% CI
-15% → +41%
Likely range of correlation
Pipeline
Pipeline Summary
50 paired data points survived the monthly window.
Raw input
1,008
1,360
Normalized
1,008
1,360
Prepared
51
1,360
Aligned
50
50
Invalid removed
R²(i)
2.0%
Variance explained
Significance
n.s.
Statistical confidence
Data points
50
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
-4 months
Correlation at this shift
+34%
+20% stronger than no-shift baseline
PPI: All Commodities shifted 4 months later. Reads: "Does RBC Bearings Incorporated (RBC) today line up with PPI: All Commodities 4 months ago?"
40 overlapping points at this shift
Baseline
+14%
No-shift correlation, matching the main time-series chart above.
Peak shift
-4 months
+34%
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
+13%
19 periods · Return correlation when both series rose
Both Falling
+10%
9 periods · Return correlation when both series fell
Diverging
-74%
20 periods · Return correlation when series moved apart
Scatter
0
A: 0 / B: 0
Duplicates removed
0
A: 0 / B: 0
Alignment drops
1,311
A: 1 / B: 1310
Series A
RBC Bearings Incorporated (RBC)
RBC
Stock · 1,008 raw → 51 prepared
Series B
PPI: All Commodities
PPIACO
FRED · 1,360 raw → 1,360 prepared
Sign agreement
100.0%
How often both values share the same sign.
Zero crossings
3
Estimated crossover points between normalized spreads.
Slope
0.0252
Linear regression slope.
Intercept
0.0020
Linear regression intercept.
Saved 2 weeks ago · ID: fred-ppiaco_stock-rbc_monthly_5y