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

Explore the MRK 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 MRK.

Options Analysis Short-Term Forecast Short Interest Report

Market Sentiment from MRK Options by Expiration Date

The table below aggregates MRK 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	12894	4001	16895	0.310
2026-04-02	4806	2241	7047	0.466
2026-04-10	1749	349	2098	0.200
2026-04-17	75172	28030	103202	0.373
2026-04-24	2168	470	2638	0.217
2026-05-01	862	430	1292	0.499
2026-05-15	15884	6228	22112	0.392
2026-06-18	44154	51630	95784	1.169
2026-07-17	8568	13336	21904	1.556
2026-09-18	37283	29647	66930	0.795
2026-10-16	625	531	1156	0.850
2026-12-18	12596	12635	25231	1.003
2027-01-15	38750	33393	72143	0.862
2027-03-19	301	585	886	1.944
2027-06-17	18934	6103	25037	0.322
2027-12-17	6273	9453	15726	1.507
2028-01-21	8307	4673	12980	0.563
How the Options Sentiment Score Is Calculated This sentiment framework evaluates market bias for MRK 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 MRK. 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 MRK options, while lower scores highlight more defensive or bearish structures.