BIIB Biogen Inc. Common Stock

together opposite · bar = ρ at each lag, −10 … 0 … +10 days · holdout ρ · click a card for the full picture

BIIB vs IBB

Both indexed to 100 at 2026-05-11.

BIIB IBB · range 95–130 · 2026-05-11 → 2026-11-06

Same day, ranked by what's left after the market and sector factors are removed ("beyond mkt").

IBB iShares Biotechnology ETF

ρ +0.56beyond mkt +0.30holdout +0.48stable 100%robust

PBE Invesco Biotechnology & Genome ETF

ρ +0.56beyond mkt +0.30holdout +0.51stable 100%robust

PJP Invesco Pharmaceuticals ETF

ρ +0.58beyond mkt +0.28holdout +0.54stable 100%robust

XLV State Street Health Care Select Sector SPDR ETF

ρ +0.57beyond mkt +0.26holdout +0.52stable 100%robust

PPH VanEck Pharmaceutical ETF

ρ +0.56beyond mkt +0.26holdout +0.49stable 100%robust

FBT First Trust NYSE Arca Biotechnology Index Fund

ρ +0.53beyond mkt +0.24holdout +0.47stable 100%robust

Biggest shifts in same-day correlation over the last 63 trading days versus the year before.

ODD ODDITY Tech Ltd. Class A Ordinary Shares

Δ +0.55recent +0.55prior +0.00beyond mkt -0.04

RYTM Rhythm Pharmaceuticals, Inc. Common Stock

Δ +0.53recent +0.62prior +0.09beyond mkt -0.05

DAR DARLING INGREDIENTS INC.

Δ -0.45recent -0.34prior +0.12beyond mkt -0.07

SD SandRidge Energy, Inc.

Δ -0.44recent -0.36prior +0.08beyond mkt +0.00

GPRE Green Plains Inc. Common Stock

Δ -0.43recent -0.34prior +0.10beyond mkt -0.08

SPOT Spotify Technology S.A.

Δ +0.42recent +0.35prior -0.07beyond mkt -0.09