SeriesMagCorrOverlapThrough
These move opposite each other about 44% of the time
Very strong inverse
Strong enough to use as a signal — read the stability and regime notes below before relying on it.
Plug Power Inc is building an end-to-end green hydrogen ecosystem, from production, storage, and delivery to energy generation. The company plans to build and operate green hydrogen highways across North America and Europe. Plug will deliver its green hydrogen solutions directly to its customers and through joint venture partners into multiple end markets, including material handling, e-mobility, power generation, and industrial applications.
Market cap 4.3B · 2,582 employees
Fed Funds Rate
FEDFUNDS
What to Watch
Drifting from pattern
Recent correlation (-10%) is running 1.6σ away from the long-run average of -85%.
Fed Funds Rate moves ~8 months before PLUG
Watch Fed Funds Rate for an early read on PLUG.
Holds across regimes
Correlation is similar when markets rise (+39%) and fall (-42%) — reliable in both directions.
Regime-dependent
The correlation has flipped sign across time windows — not reliable as a standalone signal.
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: -18 to 18 months.
Selected shift
-8 months
Correlation at this shift
-94%
+9% stronger than no-shift baseline
Fed Funds Rate shifted 8 months later. Reads: "Does Plug Power Inc. today line up with Fed Funds Rate 8 months ago?"
52 overlapping points at this shift
Time series with Fed Funds Rate shifted 8 months later
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
-85%
Pearson correlation
95% CI
-91% → -76%
Likely range
R²
72.5%
Variance explained
Trend agreement
43.8%
Same-direction moves
Significance
p < 0.001
Statistical confidence
Data points
60
Thin
Pipeline
Pipeline Summary
60 paired data points survived the monthly window.
Raw input
1,255
862
Normalized
1,255
862
Prepared
61
862
Aligned
60
60
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
+39%
8 periods · Return correlation when both series rose
Both Falling
-42%
6 periods · Return correlation when both series fell
Diverging
-38%
45 periods · Return correlation when series moved apart
Scatter
0
A: 0 / B: 0
Duplicates removed
0
A: 0 / B: 0
Alignment drops
803
A: 1 / B: 802
Series A
Plug Power Inc.
PLUG
Market cap 4.3B · 2,582 employees
Stock · 1,255 raw → 61 prepared
Series B
FEDFUNDS
FRED · 862 raw → 862 prepared
Sign agreement
100.0%
How often both values share the same sign.
Zero crossings
1
Estimated crossover points between normalized spreads.
Slope
-0.1547
Linear regression slope.
Intercept
5.1957
Linear regression intercept.
Saved 1 hour ago · ID: fred-fedfunds_stock-plug_5y