Biogen and Idec merged in 2003, combining forces to market Biogen's multiple sclerosis drug Avonex and Idec's cancer drug Rituxan. Today, Rituxan and next-generation antibody Gazyva (oncology) and Ocrevus (multiple sclerosis) are marketed via a collaboration with Roche. Biogen markets several multiple sclerosis drugs including Plegridy, Tysabri, Tecfidera, and Vumerity. Biogen's newer products include Spinraza (SMA, with partner Ionis), Leqembi (Alzheimers, with partner Eisai), Skyclarys (Friedreich's Ataxia, Reata), Zurzuvae (postpartum depression, Sage), and Qalsody (ALS, Ionis). Biogen has several drug candidates in phase 3 trials in neurology, immunology, and rare diseases.
Quick Stats
May 18, 202662.2
AI Score
BUY0.39
Volume Ratio
May 06, 2026
Next Earnings
20
+ve Days (30d)
10
-ve Days (30d)
BIIB Stock Summary
Last updated May 18, 2026
BIIB is currently trading at $191.33, positioned above its 200-day moving average of $168.05, indicating a long-term uptrend. The stock has a 52-week range of $121.05 to $205.97.
Technical Analysis: The 50-day moving average stands at $185.52, which is below the current price, signaling bullish near-term momentum. The RSI (Relative Strength Index) reads 53.359, suggesting the stock is neutral with balanced momentum.
Money Flow Indicators: The Chaikin Money Flow (20-day) is 0.049, which is positive, indicating accumulation by institutional investors. Our AI-powered investment score rates BIIB at 62.2/100 with a BUY recommendation.
BIIB (Biogen Inc. Common Stock) Indicators
Last updated May 18, 2026
| Indicator | Value |
|---|---|
| RSI(14) | 53.359 |
| CMF (20) | 0.049 |
| ROC (10) | 2.981 |
| ADX (14) | 20.028 |
| Indicator | Value |
|---|---|
| MACD (12,26,9) | 3.112 |
| AROONOSC (14) | 71.429 |
| WILLAMS %R (14) | -51.105 |
| MFI (14) | 65.452 |
BIIB Technical Chart
- Candlesticks: Green = price up, Red = price down. Body shows open/close, wicks show high/low.
- SMAs: Moving averages help identify trends. Price above SMA = bullish, below = bearish.
- Options OI: Shows max open interest strikes. High OI = significant price levels.
- Volume Profile: Shows price levels with most trading activity. POC = Point of Control (highest volume).
- Earnings: Vertical lines mark earnings dates. Watch for volatility around these dates.
- Gamma Walls: Key support/resistance from options gamma exposure. Orange = resistance above, Purple = support below.
- Fibonacci Retracement: Auto-calculated support/resistance levels based on recent high/low. Key levels: 23.6%, 38.2%, 50%, 61.8%, 78.6%.
- Unusual Activity: Highlights days with abnormal volume (2x+ average) or large price moves (5%+). Red marker = unusual activity detected.
Technical Indicators
Select indicators above to analyze technical patterns
Indicators will appear below the price chart with perfectly aligned datesVolume Profile Analysis
Horizontal histogram showing volume distribution at each price level with buying/selling pressure
BIIB Price vs Max Options Open Interest
BIIB Max Change In Options Open Interest
BIIB Options - Sort by Max open Interest (near term)
18th May 2026 (Data is delayed in normal mkt. hours)
| Type | Expiration | Strike | OI | Change in OI |
Volume | Ask | PC | Delta | Vega | Volatility | % change | Track |
|---|
BIIB Daily Out of Money Options - Sort by Max open Interest (near term)
18th May 2026 (Data is delayed in normal mkt. hours)
| Type | Expiration | Strike | OI | Change in OI |
Volume | Ask | PC | Delta | Vega | Volatility | % change | Track |
|---|
BIIB Daily In the Money Options - Sort by Max open Interest (near term)
18th May 2026 (Data is delayed in normal mkt. hours)
| Type | Expiration | Strike | OI | Change in OI |
Volume | Ask | PC | Delta | Vega | Volatility | % change | Track |
|---|
BIIB Most Active Options by Volume(near term)
18th May 2026 (Data is delayed in normal mkt. hours)
| Type | Expiration | Strike | Volume | OI | Change in OI |
Ask | PC | Delta | Vega | Volatility | % change | Track |
|---|
Biogen Inc. Common Stock is above both 50 Day and 200 Day SMA which is considered Bullish.
BIIB Moving Averages Analysis
Biogen Inc. Common Stock has been above 50 day sma 1 times in last 30 days. Last time it was above 50 day sma was on May 18, 2026
Biogen Inc. Common Stock has been above 200 day sma 1 times in last 30 days. Last time it was above 200 day sma was on May 18, 2026
BIIB (Biogen Inc. Common Stock) Simple Moving Averages
Moving Averages are last updated May 18, 2026
| Days | MA |
|---|---|
| 10 | 194.21 |
| 20 | 190.62 |
| 30 | 186.35 |
| 50 | 185.52 |
| 100 | 184.21 |
| 200 | 168.05 |
BIIB Fundamental Analysis
| P/E (Forward) | 13.8504 |
| P/E (Trailing) | 20.5774 |
| Market Cap ($) | 28.3 billion |
| Earnings/Share ($) | 9.3 |
| Net Proft Margin (%) | 0.1381 |
| Dividend/Share ($) | -- |
| EPS Estimate Current Year ($) | 13.3906 |
| EPS Estimate Next Year ($) | 16.573 |
| WallStreet Target Price ($) | 217.0283 |
| Most Recent Quarter |