BIIB Options Chain by Expiration – Open Interest & Put/Call Ratio

Explore the BIIB options chain aggregated by expiration date, with call and put open interest, total OI and put/call ratios. Use this overview to spot where options positioning is most concentrated and which expirations carry bullish, bearish or neutral sentiment for BIIB.

Options Analysis Short-Term Forecast Short Interest Report

Market Sentiment from BIIB Options by Expiration Date

The table below aggregates BIIB options data by expiration date, including call volume, put volume, total open interest and the put/call ratio. Each row is assigned a sentiment label and numerical sentiment score, highlighting expirations where positioning is extremely bullish, defensive or balanced. Click on an expiration date to drill down into the detailed options chain for that maturity.

Expiration Date	Call OI	Put OI	Total Open Interest	Put/Call Ratio
2026-10-16	3327	2655	5982	0.798
2026-10-23	1007	377	1384	0.374
2026-10-30	474	342	816	0.722
2026-11-06	123	16	139	0.130
2026-11-13	21	25	46	1.190
2026-11-20	717	151	868	0.211
2026-11-27	6	0	6	0.000
2026-12-18	4532	4203	8735	0.927
2027-01-15	6766	7067	13833	1.044
2027-03-19	1591	827	2418	0.520
2027-04-16	128	181	309	1.414
2027-06-17	721	637	1358	0.883
2027-09-17	200	34	234	0.170
2028-01-21	3182	1390	4572	0.437
2029-01-19	53	5	58	0.094
How the Options Sentiment Score Is Calculated This sentiment framework evaluates market bias for BIIB based on aggregated options data by expiration date. The key metrics are: Put/Call Ratio (PCR): Compares put and call activity. A higher PCR usually indicates more defensive or bearish positioning, while a lower PCR suggests bullish call demand. Open Interest (OI): Represents the number of outstanding option contracts. Higher open interest reflects strong market attention, hedging activity or speculative positioning around BIIB. Unusual activity ⚠️: Expirations with extreme PCR or unusually high OI are flagged with a warning icon, signaling concentrated bets, hedging pressure or potential event-driven risk. The sentiment score combines PCR and OI into a 0–100 scale, then classifies each expiration into intuitive labels such as Strong Bullish, Moderate Bullish, Neutral, Moderate Bearish, Strong Bearish. Higher scores reflect more aggressive bullish positioning in BIIB options, while lower scores highlight more defensive or bearish structures.