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
2025-12-26	14604	5636	20240	0.386
2026-01-02	5407	2215	7622	0.410
2026-01-09	1673	1719	3392	1.027
2026-01-16	82468	75832	158300	0.920
2026-01-23	3552	249	3801	0.070
2026-01-30	599	303	902	0.506
2026-02-20	20404	9011	29415	0.442
2026-03-20	44384	32152	76536	0.724
2026-04-17	81605	13431	95036	0.165
2026-06-18	32197	36395	68592	1.130
2026-07-17	1974	510	2484	0.258
2026-09-18	21559	16318	37877	0.757
2026-12-18	11751	8767	20518	0.746
2027-01-15	37643	25252	62895	0.671
2027-06-17	19060	4660	23720	0.244
2027-12-17	7310	10048	17358	1.375
2028-01-21	4809	1813	6622	0.377
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.