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
2026-08-21	32873	22130	55003	0.673
2026-08-28	3998	1417	5415	0.354
2026-09-04	1651	566	2217	0.343
2026-09-11	2232	472	2704	0.211
2026-09-18	74739	44996	119735	0.602
2026-09-25	1025	162	1187	0.158
2026-10-02	28	6	34	0.214
2026-10-16	17810	17834	35644	1.001
2026-11-20	712	529	1241	0.743
2026-12-18	27095	22517	49612	0.831
2027-01-15	46949	46185	93134	0.984
2027-03-19	7165	7441	14606	1.039
2027-06-17	26218	18015	44233	0.687
2027-12-17	8472	10177	18649	1.201
2028-01-21	11172	10374	21546	0.929
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.