BIIB Earnings Predictions — 2026-07-29

Ticker Report or Guide KPI Prediction Answer Confidence
BIIB Report Total revenue IN-LINE pred ~$2.50B vs. cons $2.47B MEDIUM
BIIB Report Non-GAAP EPS (incl. ~$0.95 IPR&D charge) BEAT pred ~$0.90 vs. cons $0.79 LOW
BIIB Report Growth portfolio revenue (LEQEMBI/SKYCLARYS/ZURZUVAE/QALSODY) BEAT pred ~$920M vs. cons ~$895M MEDIUM
BIIB Guide FY2026 non-GAAP EPS (first Apellis-inclusive guide) LOWER guide ~$13.75 (midpoint) vs. cons ~$14.25 (FY2026) MEDIUM
BIIB Guide FY2026 total revenue (Apellis-inclusive) BETTER guide ~$9.9B vs. cons ~$9.7B (FY2026) LOW
BIIB Guide FY2026 IPR&D / other-expense drag (Q3 ~$290-320M charge flagged) LOWER guide ~$0.55B IPR&D + ~$125M Apellis other expense vs. cons ~$0.35B (2H26) MEDIUM
BIIB Guide SYFOVRE/EMPAVELI 2H26 contribution UNKNOWN guide ~$0.5B vs. cons ~$0.5B (2H26) LOW
BIIB Return Day-1 residual (stock − beta × S&P 500) -2.5% LOW
BIIB Return 5-day cumulative residual -4.0% (FADE) Even if the underlying revenue and growth-portfolio print beat, the headline is distorted by the ~$0.95 Q2 IPR&D charge and the pre-flagged ~$1.75-1.95 Q3 charge. The first Apellis-inclusive FY26 guide bakes in ~$120-130M financing/other expense and additional IPR&D, so consensus out-period EPS gets cut even on an operational beat. With the stock already re-rated ~16% YTD into the low-$200s and the unresolved diranersen Phase 3 overhang, elevated positioning plus downward EPS revisions drive a fade rather than follow-through. LOW