NASDAQ · STOCK
Biogen
$202.89
52W $124.56 – $219.72
61/100
$29.99B
35.7
0.16
⚠
Buy rating, but near-term risk/reward is unfavorable
The long-term recommendation is based on the composite investment score. The near-term risk/reward is based on nearby support and resistance levels. These can differ when a strong company trades close to resistance with support further below.
Is BIIB Bullish or Bearish?
Bullish.
Innellis AI committee rates Biogen (BIIB) Buy with a composite score of 61/100
, based on 6 analysts with 67% agreement.
Last updated August 01, 2026.
What Would Change This View
- Upgrade to Strong Buy
- Requires a committee score of 75.0 — +14.10 from today. Applies on the first day at or above the line; upgrades are never dampened.
- Downgrade to Watch
- Requires the score to fall below 55.0 — -5.90 from today. The band boundary is 60.0, but a one-step downgrade must clear a further margin first. A score oscillating around the line should not change the rating every night.
Executive Summary
The primary driver is price-to-book of 1.4x is a discount to asset value. The main limiting factor is eps declining -8.1% yoy despite any revenue growth. The committee is constructive but not yet at full conviction.
Bull & Bear Case
Bull Case
- Price-to-book of 1.4x is a discount to asset value — Value
- 5 consecutive earnings beats -- consistent execution — Growth
- Price structure making higher highs and higher lows — Technical
- MACD histogram positive -- bullish momentum — Technical
- Trend and market structure agree -- coherent bullish picture — Technical
- Market regime is bullish (Bull market -- normal position sizing) — Macro
Bear Case
- EPS declining -8.1% YoY despite any revenue growth — Growth
- Growth rate is decelerating quarter over quarter -- the trend line matters more than the level — Growth
Both cases are generated from quantitative data signals, not qualitative or
forward-looking judgement. They summarise what the numbers say today.
Price History (6M)
AI Investment Committee
Committee Consensus
As of August 01, 2026
Overall Committee Score
61/100
Agreement
67%
Analysts
6
Conviction
Moderate
Sector Rank
Top 17%
of 93 Healthcare peers
Value Analyst
bullish
70
/ 100 · Moderate confidence
Classic value case: cheap on multiples with earnings power to back it up
+ Price-to-book of 1.4x is a discount to asset value
Growth Analyst
neutral
44
/ 100 · High confidence
Moderate growth -- present but not remarkable
+ 5 consecutive earnings beats -- consistent execution
− EPS declining -8.1% YoY despite any revenue growth
Technical Analyst
bullish
68
/ 100 · High confidence
Price action is constructive -- trend and momentum agree
+ Price structure making higher highs and higher lows
Macro Analyst
bullish
70
/ 100 · Moderate confidence
Macro backdrop is supportive of risk assets generally, and this name's beta works in its favor
+ Market regime is bullish (Bull market -- normal position sizing)
News Analyst
bullish
68
/ 100 · Low confidence
News flow and recent filings/analyst actions are net positive
+ News sentiment is positive (+0.33 across 45 articles, 14d)
Portfolio Manager
neutral
45
/ 100 · High confidence
Portfolio-level factors are mixed -- worth a deliberate sizing decision, not a default-size position
+ Portfolio position concentration is currently healthy
− Sector concentration is already high (HHI 2535.03)
Investment Thesis Evolution
Committee score moved marginally from 58.5 to 60.9.
- Recommendation changed from Watch to Buy.
- Conviction changed from contested to moderate.
- Committee agreement increased notably from 50% to 67%.
- New bearish signals: 2 appeared.
- Bullish support removed: 1 signal(s) disappeared.
- New bullish signals: 1 appeared.
- Bearish pressure eased: 2 signal(s) disappeared.
- Analyst(s) changed stance: Macro Analyst.
Analyst-level changes:
- Macro Analyst: stance neutral->bullish; score 58->70 (+12).
- News Analyst: +1 bullish signal(s).
- Portfolio Manager: +2 bearish signal(s).
Comparing 2026-07-31 to 2026-08-01 (1 day apart).
Technical Analysis
RSI (14)
48.3
Neutral
MACD Histogram
0.154
Bullish Momentum
Trend Direction
Uptrend
Weekly: Sideways
Market Structure
Hh Hl
Support
$197.00
Resistance
$205.76
Bollinger %B
0.51
Inside Bands
Price vs Moving Averages
EMA 9
$204.22
Below
EMA 21
$203.36
Below
EMA 50
$200.32
Above
EMA 200
$184.22
Above
Fundamental Analysis
Valuation
72
Growth
55
Profitability
0
Financial Health
94
Cash Flow
38
Valuation
P/E Ratio
35.7×
P/B Ratio
1.59×
PEG Ratio
-0.78
Dividend Yield
0.00%
52W High
$219.72
52W Low
$124.56
Quality & Growth
ROE
7.1%
ROA
4.4%
Gross Margin
67.7%
Operating Margin
12.8%
Revenue Growth YoY
—
Debt / Equity
0.44
AI Fundamental Assessment
P/E ratio of 35.7 (rich relative to a 15-40x range); Price-to-book of 1.6x; PEG ratio of -0.8 (under 1.0 suggests growth is undervalued relative to price); Return on equity of 0.1%; Return on assets of 0.0%; Net margin of 0.1%; Gross margin of 0.7%; Current ratio of 1.87 (healthy short-term liquidity); Debt-to-equity of 0.44; Free cash flow margin of 1.0% (thin cash generation); Free cash flow per share is positive (20.10); Most recent quarter beat estimates by 19.8%; 5 consecutive earnings beats; EPS growth decelerating (+79.4% -> +0.8% QoQ); Average YoY EPS growth of -34.2%; Analyst estimates rising over recent quarters
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