Correlation Analysis
Meta Platforms, Inc. Class A Common Stock vs Biogen Inc. Common Stock
META vs BIIB
-0.833
Strong inverse
When one moves up, the other tends to move down.
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
Biogen Inc. Common Stock
↗BIIB
Biogen is an established biopharmaceutical company focused on treatments for neurodegenerative and rare diseases. Its declining multiple sclerosis franchise is its largest revenue generator and contributed 40% of total revenue in 2025. Biogen also generates significant revenue from its CD20 collaboration agreements with Roche (19% of total in 2025), which includes oncology drugs Rituxan and Gazyva and multiple sclerosis drug Ocrevus. Biogen's newer franchises include Spinraza (spinal muscular atrophy, with partner Ionis), Leqembi (Alzheimer's disease, collabroation revenue from its partner Eisai), Skyclarys (Friedreich's ataxia, Reata), Zurzuvae (postpartum depression, Sage), and Qalsody (amyotrophic lateral sclerosis, Ionis).
Market cap 25.3B · 7,500 employees
Time Series
Rebased to 100
Who Moves First
BIIB leads META by 3 days
BIIB tends to move before META.
Best correlation after shifting: -0.833 (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
-0.609
7 periods · Return correlation when both series rose
Both Falling
-0.333
7 periods · Return correlation when both series fell
Diverging
-0.611
21 periods · Return correlation when series moved apart
R-Squared
69.3%
Share of variance in one series explained by the other.
Trend Agreement
55.3%
How often both series moved in the same direction period-to-period.
Overlap Quality
1,106
Deep shared window — 1,106 usable pairs.
Significance
p < 0.001
95% CI: [-0.850, -0.814]
Scatter
XY Regression
Pipeline
Data quality details
Pipeline
Data quality details
Pipeline Summary
1,106 paired observations survived the daily window.
Raw input
1,107
1,253
Normalized
1,107
1,253
Prepared
1,107
1,253
Aligned
1,106
1,106
Invalid removed
0
A: 0 / B: 0
Duplicates removed
0
A: 0 / B: 0
Alignment drops
148
A: 1 / 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
Biogen Inc. Common Stock
BIIB
Market cap 25.3B · 7,500 employees
Stock · 1,253 raw → 1,253 prepared
Sign agreement
100.0%
How often both values share the same sign.
Zero crossings
1
Estimated crossover points between normalized spreads.
Slope
-0.2054
Linear regression slope.
Intercept
299.2616
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-biib-daily-20260408-6w8t3g