BIIB
Biogen Inc.Prices and gamma are point-in-time snapshots taken at the time shown. Dealer positioning is an assumption, not an observable: open interest shows that a contract exists, never which side a dealer holds. How dealer gamma is computed.
LIVE MARKET SNAPSHOT
| Call Wall | 220 |
| Put Wall | 200 |
| GEX Flip | 215 |
| Vol Trigger | 200 |
| Net GEX | $2.7M |
Cached snapshot as of 2026-09-16 09:10 UTC, live streaming data in the terminal.
BIIB DEALER GAMMA BY STRIKE
Part of the SquawkFlow GEX Calculator: gamma by strike for any US stock. Compare with SPX GEX.
Net gamma exposure at each strike near BIIB's spot price, signed from the dealer perspective, calls positive, puts negative. Green strikes are where hedging tends to dampen moves; red is where it tends to amplify them. Dealer positioning is an assumption rather than an observable, so treat these as a map of where hedging pressure concentrates, not a forecast.
Unit: USD of dealer gamma per 1 percent move in spot. A window of the BIIB option chain, not the whole book: the 30 strikes nearest spot out of 60 seen, 214 contract rows spanning 2 expirations. Gamma is taken as the chain publishes it per contract; nothing here is re-priced. Crossed with the open interest carried on that chain.
New to these levels? Start with the call wall and put wall, or the zero gamma level where the sign of dealer hedging flips.
| Strike | Net GEX | Call GEX | Put GEX | Concentration |
|---|---|---|---|---|
| 175 | -$36.4K | $771 | -$37.2K | |
| 180 | $1.3K | $36.2K | -$35.0K | |
| 185 | -$42.9K | $2.6K | -$45.5K | |
| 187.5 | $0 | $0 | $0 | |
| 190 | -$264.2K | $17.0K | -$281.2K | |
| 192.5 | $0 | $0 | $0 | |
| 195 | -$199.3K | $70.1K | -$269.4K | |
| 197.5 | -$851 | $425 | -$1.3K | |
| 200PUT WALL | $117.1K | $525.9K | -$408.8K | |
| 202.5 | -$21.7K | $0 | -$21.7K | |
| 205 | -$22.4K | $813 | -$23.2K | |
| 207.5 | $5.4K | $14.2K | -$8.8K | |
| 210 | $915.7K | $1.2M | -$267.4K | |
| 212.5 | -$7.8K | $16.0K | -$23.8K | |
| 215SPOTGEX FLIP | $96.0K | $145.1K | -$49.1K | |
| 217.5 | $34.6K | $42.4K | -$7.7K | |
| 220CALL WALL | $988.7K | $1.4M | -$445.2K | |
| 222.5 | $12.9K | $34.6K | -$21.8K | |
| 225 | $82.6K | $88.0K | -$5.4K | |
| 227.5 | $41.6K | $41.6K | $0 | |
| 230 | $640.3K | $675.7K | -$35.3K | |
| 232.5 | $21.3K | $21.3K | $0 | |
| 235 | $52.7K | $52.7K | $0 | |
| 237.5 | $13.7K | $13.7K | $0 | |
| 240 | $228.8K | $232.1K | -$3.2K | |
| 242.5 | $0 | $0 | $0 | |
| 245 | $229 | $229 | $0 | |
| 250 | $9.9K | $9.9K | $0 | |
| 255 | $346 | $346 | $0 | |
| 260 | $31.1K | $31.1K | $0 |
These levels were captured September 16, 2026 from the open interest carried on the option chain. New levels post before each market open. Today's SPX gamma levels.
ABOUT BIIB
Biogen is a neuroscience-focused biotechnology company with treatments for multiple sclerosis (Tecfidera, Tysabri), spinal muscular atrophy (Spinraza), and Alzheimer's disease (Leqembi, co-developed with Eisai). The company is also pursuing therapies for ALS, Parkinson's, and other neurological conditions.
WHY TRACK BIIB ON SQUAWKFLOW
BIIB options flow is heavily influenced by Alzheimer's drug adoption data and MS franchise erosion. Put/call ratio shifts often precede Leqembi uptake updates and CMS coverage decisions.
BIIB DATA ON SQUAWKFLOW
Options Flow
BIIB options flow, unusual activity, and volume concentrations from the session chain
Latest Snapshot
Last BIIB price, change, volume, and the current dealer-gamma regime
GEX Dashboard
BIIB gamma exposure levels, call/put walls, and GEX flip
AI Narration
AI-powered analysis of BIIB market microstructure in real time
News Sentiment
BIIB news with AI sentiment scoring and impact analysis
Sector Context
Healthcare sector rotation and relative strength vs peers
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