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
2026-02-06	1247	1393	2640	1.117
2026-02-13	402	212	614	0.527
2026-02-20	2947	2108	5055	0.715
2026-02-27	86	97	183	1.128
2026-03-06	47	113	160	2.404
2026-03-13	16	42	58	2.625
2026-03-20	9664	6849	16513	0.709
2026-03-27	1	0	1	0.000
2026-04-17	2317	1238	3555	0.534
2026-06-18	2772	2638	5410	0.952
2026-07-17	559	444	1003	0.794
2026-09-18	259	1113	1372	4.297
2026-12-18	1459	1814	3273	1.243
2027-01-15	3494	5030	8524	1.440
2027-06-17	10	2	12	0.200
2028-01-21	2652	254	2906	0.096
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.