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Accuray Incorporated (ARAY) vs Spot Crude Oil Price: West Texas Intermediate
Correlation
of % moves
-30%
In sync
of periods
38%
History
monthsmonths · through 2026-04
59
These move in the same direction about 38% of the time
Their swing sizes only faintly mirror each other (~9% 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
ARAY moves ~1 month before Spot Crude Oil Price: West Texas Intermediate
Watch ARAY for an early read on Spot Crude Oil Price: West Texas Intermediate.
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)
37.9%
Headline metric
Movement correlation(i)
-30%
Based on % moves
95% CI
-52% → -5%
Likely range of correlation
Pipeline
Pipeline Summary
59 paired data points survived the monthly window.
Raw input
1,254
964
Normalized
1,254
964
Prepared
60
964
Aligned
59
59
Invalid removed
R²(i)
9.3%
Variance explained
Significance
p < 0.05
Statistical confidence
Data points
59
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
+1 month
Correlation at this shift
-41%
+11% stronger than no-shift baseline
Spot Crude Oil Price: West Texas Intermediate shifted 1 month earlier. Reads: "Does Accuray Incorporated (ARAY) today line up with Spot Crude Oil Price: West Texas Intermediate 1 month from now?"
57 overlapping points at this shift
Baseline
-30%
No-shift correlation, matching the main time-series chart above.
Peak shift
+1 month
-41%
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
+54%
9 periods · Return correlation when both series rose
Both Falling
+3%
13 periods · Return correlation when both series fell
Diverging
-54%
36 periods · Return correlation when series moved apart
Scatter
0
A: 0 / B: 0
Duplicates removed
0
A: 0 / B: 0
Alignment drops
906
A: 1 / B: 905
Series A
Accuray Incorporated (ARAY)
ARAY
Stock · 1,254 raw → 60 prepared
Series B
Spot Crude Oil Price: West Texas Intermediate
WTISPLC
FRED · 964 raw → 964 prepared
Sign agreement
100.0%
How often both values share the same sign.
Zero crossings
13
Estimated crossover points between normalized spreads.
Slope
-0.1810
Linear regression slope.
Intercept
-0.0015
Linear regression intercept.
Saved 3 weeks ago · ID: fred-wtisplc_stock-aray_monthly_5y