Correlation Analysis
Vertex Pharmaceuticals Inc vs Exxon Mobil Corporation
VRTX vs XOM
+0.820
Strong positive
When one moves up, the other tends to follow.
Vertex Pharmaceuticals Inc
↗VRTX
Vertex Pharmaceuticals is a global biotechnology company that discovers and develops small-molecule drugs for the treatment of serious diseases. Its key drugs are Kalydeco, Orkambi, Symdeko, and Trikafta/Kaftrio, and Alyftrek for cystic fibrosis, where Vertex therapies remain the standard of care globally. Vertex has diversified its portfolio through Casgevy, a gene-editing therapy for beta thalassemia and sickle-cell disease, and Journavx, a non-opioid pain medication approved for the treatment of moderate-to-severe acute pain in adults. Additionally, Vertex is evaluating small-molecule inhibitors of APOL1-mediated kidney diseases. Vertex is also investigating cell therapies to deliver a potential functional cure for type 1 diabetes.
Market cap 110.5B · 6,400 employees
Exxon Mobil Corporation
↗XOM
ExxonMobil is an integrated oil and gas company that explores for, produces, and refines oil worldwide. In 2025, it produced 3.3 million barrels of liquids and 8.4 billion cubic feet of natural gas per day. At the end of 2024, reserves were 19.9 billion barrels of oil equivalent, 69% of which were liquids. The company is one of the world's largest refiners, with a total global refining capacity of 4.3 million barrels of oil per day, and is one of the world's largest manufacturers of commodity and specialty chemicals.
Market cap 680.7B
Time Series
Relative Performance
Who Moves First
XOM leads VRTX by 6 days
XOM tends to move before VRTX.
After testing 13 timing shifts, the strongest relationship was +0.824 (they moved in the same direction).
Do They Crash Together?
Correlation by Market Regime
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
-0.507
12 periods · Return correlation when both series rose
Both Falling
+0.910
6 periods · Return correlation when both series fell
Diverging
-0.573
17 periods · Return correlation when series moved apart
R-Squared
67.2%
Share of variance in one series explained by the other.
Trend Agreement
53.6%
How often both series moved in the same direction period-to-period.
Overlap Quality
1,254
Deep shared window — 1,254 usable pairs.
Significance
p < 0.001
95% CI: [0.801, 0.837]
Scatter
XY Regression
Pipeline
Data quality details
Pipeline
Data quality details
Pipeline Summary
1,254 paired data points survived the daily window.
Raw input
1,254
1,254
Normalized
1,254
1,254
Prepared
1,254
1,254
Aligned
1,254
1,254
Invalid removed
0
A: 0 / B: 0
Duplicates removed
0
A: 0 / B: 0
Alignment drops
0
A: 0 / B: 0
Series A
Vertex Pharmaceuticals Inc
VRTX
Market cap 110.5B · 6,400 employees
Stock · 1,254 raw → 1,254 prepared
Series B
Exxon Mobil Corporation
XOM
Market cap 680.7B
Stock · 1,254 raw → 1,254 prepared
Sign agreement
100.0%
How often both values share the same sign.
Zero crossings
11
Estimated crossover points between normalized spreads.
Slope
0.1851
Linear regression slope.
Intercept
35.7114
Linear regression intercept.
Related Extremes
Highest and Lowest Correlated
VRTX
Vertex Pharmaceuticals Inc
Highest
+0.939
Eli Lilly & Co.
LLY · 1,254 data points
Lowest
+0.062
Johnson & Johnson
JNJ · 1,254 data points
Saved 7 hours ago · ID: stock-vrtx-vs-stock-xom-daily