Correlation Analysis
Meta Platforms, Inc. Class A Common Stock vs Merck & Co., Inc.
META vs MRK
+0.197
Weak positive
When one moves up, the other tends to follow.
Meta Platforms, Inc. Class A Common Stock
↗META
Meta is the largest social media company in the world, boasting close to 4 billion monthly active users worldwide. The firm's "Family of Apps," its core business, consists of Facebook, Instagram, Messenger, and WhatsApp. End users can leverage these applications for a variety of different purposes, from keeping in touch with friends to following celebrities and running digital businesses for free. Meta packages customer data, gleaned from its application ecosystem and sells ads to digital advertisers. While the firm has been investing heavily in its Reality Labs business, it remains a very small part of Meta's overall sales.
Market cap 1.4T
Merck & Co., Inc.
↗MRK
Merck makes pharmaceutical products to treat several conditions in a number of therapeutic areas, including cardiometabolic disease, cancer, and infections. Within cancer, the firm's immuno-oncology platform, led by Keytruda, is a major contributor to overall sales. The company also has a substantial vaccine business aimed at preventing pediatric diseases, as well as Gardasil for human papillomavirus. Additionally, Merck sells animal health-related drugs. From a geographical perspective, 47% of the company's sales are generated from US human health (pharmaceuticals and vaccines).
Market cap 298.8B
Time Series
Rebased to 100
Who Moves First
MRK leads META by 6 days
MRK tends to move before META.
Best correlation after shifting: +0.197 (13 shifts scanned)
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
+0.576
10 periods · Return correlation when both series rose
Both Falling
-0.494
6 periods · Return correlation when both series fell
Diverging
-0.598
19 periods · Return correlation when series moved apart
R-Squared
3.9%
Share of variance in one series explained by the other.
Trend Agreement
50.9%
How often both series moved in the same direction period-to-period.
Overlap Quality
1,107
Deep shared window — 1,107 usable pairs.
Significance
p < 0.001
95% CI: [0.140, 0.253]
Scatter
XY Regression
Pipeline
Data quality details
Pipeline
Data quality details
Pipeline Summary
1,107 paired observations survived the daily window.
Raw input
1,107
1,254
Normalized
1,107
1,254
Prepared
1,107
1,254
Aligned
1,107
1,107
Invalid removed
0
A: 0 / B: 0
Duplicates removed
0
A: 0 / B: 0
Alignment drops
147
A: 0 / B: 147
Series A
Meta Platforms, Inc. Class A Common Stock
META
Market cap 1.4T
Stock · 1,107 raw → 1,107 prepared
Series B
Merck & Co., Inc.
MRK
Market cap 298.8B
Stock · 1,254 raw → 1,254 prepared
Sign agreement
100.0%
How often both values share the same sign.
Zero crossings
1
Estimated crossover points between normalized spreads.
Slope
0.0134
Linear regression slope.
Intercept
95.3804
Linear regression intercept.
Related Extremes
Highest and Lowest Correlated
META
Meta Platforms, Inc. Class A Common Stock
Highest
+0.979
PCEC96
PCEC96 · 52 observations
Lowest
-0.939
United Parcel Service, Inc. Class B
UPS · 1,107 observations
Saved 3 hours ago · ID: stock-meta-vs-stock-mrk-daily-20260408-p6sdd3