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
2026-03-27	302	169	471	0.560
2026-04-02	87	72	159	0.828
2026-04-10	107	17	124	0.159
2026-04-17	3711	2225	5936	0.600
2026-04-24	38	55	93	1.447
2026-05-01	89	14	103	0.157
2026-05-15	35	28	63	0.800
2026-06-18	4539	3696	8235	0.814
2026-07-17	937	3179	4116	3.393
2026-09-18	1436	1393	2829	0.970
2026-10-16	66	9	75	0.136
2026-12-18	1595	2305	3900	1.445
2027-01-15	3650	5605	9255	1.536
2027-03-19	33	69	102	2.091
2027-06-17	23	111	134	4.826
2028-01-21	2765	269	3034	0.097
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.