BIIB Earnings Predictions — 2026-07-29

Ticker Report or Guide KPI Prediction Answer Confidence
BIIB Report Total Revenue BEAT pred ~$2.52B vs. cons $2.46B MEDIUM
BIIB Report Non-GAAP Diluted EPS IN-LINE pred ~$3.15 vs. cons $3.18 MEDIUM
BIIB Report Growth Product Revenue (Leqembi/Skyclarys/HD-Spinraza ex-Apellis) BEAT pred ~$930M vs. cons $880M MEDIUM
BIIB Guide FY26 Non-GAAP EPS (first combined guide incl. Apellis + disclosed Q2/Q3 IPR&D charges) LOWER guide ~$12.75-$13.75 vs. cons ~$14.00 (FY2026) MEDIUM
BIIB Guide FY26 Total Revenue growth BETTER guide ~flat to +2% y/y (~$9.6-9.8B) vs. cons ~-1% y/y (~$9.5B) (FY2026) MEDIUM
BIIB Guide Q3 2026 Acquired IPR&D Charge (reaffirmed) UNCHANGED guide ~$290-320M ($1.75-$1.95/sh) vs. cons ~$300M/$1.85 already flagged (Q3 2026) HIGH
BIIB Return Day-1 residual (stock − beta × S&P 500) -2.0% MEDIUM
BIIB Return 5-day cumulative residual -3.5% (FOLLOW-THROUGH) Core revenue/growth-product beat gets overshadowed by the first combined FY26 EPS guide, which layers the already-disclosed ~$0.95 (Q2) and $1.75-1.95 (Q3) IPR&D charges atop Apellis financing costs (~$120-130M non-GAAP other expense) and integration/amortization drag; even sell-side desks that hadn't fully updated post-8K trim FY26/FY27 EPS models over the following days, and lingering overhang from the mid-July diranersen dose-response miss (no incremental positive catalyst expected on the call beyond reiterating a later Phase 3) keeps buyers sidelined, producing continued single-name underperformance through day 5 rather than a snap-back. LOW