BIIB Earnings Predictions — 2026-07-29

Ticker Report or Guide KPI Prediction Answer Confidence
BIIB Report Total revenue BEAT pred ~$2.47B vs. cons $2.42B MEDIUM
BIIB Report Non-GAAP diluted EPS IN-LINE pred ~$2.98 vs. cons $2.98 MEDIUM
BIIB Report LEQEMBI global in-market sales BEAT pred ~$195M vs. cons $190M MEDIUM
BIIB Guide FY 2026 total revenue, inclusive of Apellis BETTER guide ~$9.75B vs. cons $9.70B (FY 2026) MEDIUM
BIIB Guide FY 2026 non-GAAP diluted EPS, inclusive of Apellis and updated business-development charges LOWER guide ~$10.75 vs. cons $11.40 (FY 2026) HIGH
BIIB Guide SYFOVRE plus EMPAVELI revenue growth BETTER guide ~17% vs. cons 16% (FY 2026) MEDIUM
BIIB Return Day-1 residual (stock − beta × S&P 500) -4.5% MEDIUM
BIIB Return 5-day cumulative residual -6.0% (FOLLOW-THROUGH) A revenue beat of ~$2.47B vs. $2.42B and resilient LEQEMBI sales of ~$195M vs. $190M are likely outweighed by FY 2026 EPS guidance near ~$10.75 versus ~$11.40 consensus. The incremental Q3 acquired-I​​PR&D/upfront-charge burden and Apellis financing/integration math should drive out-period estimate reductions rather than a one-day reaction only. MEDIUM