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
2026-10-02	6462	8210	14672	1.271
2026-10-09	4703	952	5655	0.202
2026-10-16	49662	28481	78143	0.573
2026-10-23	2255	1900	4155	0.843
2026-10-30	4915	876	5791	0.178
2026-11-06	100	11	111	0.110
2026-11-20	21936	25605	47541	1.167
2026-12-18	50485	28908	79393	0.573
2027-01-15	58499	57780	116279	0.988
2027-03-19	22796	15483	38279	0.679
2027-04-16	1536	1867	3403	1.215
2027-06-17	31821	21110	52931	0.663
2027-09-17	1390	1737	3127	1.250
2027-12-17	8494	12339	20833	1.453
2028-01-21	13546	15580	29126	1.150
2029-01-19	425	283	708	0.666
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.