Merck (MRK) Options Chain

NYSE: MRKHealth CareBiotechnology: Pharmaceutical PreparationsUSD

145.60+3.22 (+2.26%)

At close: Oct 9, 4:02 PM ET · Delayed 15 min

Expiration date

Expiration: Jun 17, 2027
Days to expiration: 249
Share price: $145.60
Put/call ratio (OI): 0.69
Put/call ratio (volume): 0.16
ATM implied volatility: 34.4%
Expected move: ±$41.37
Open interest (C / P): 31.84K / 21.95K

MRK options summary

The MRK options chain for the June 17, 2027 expiration lists 36 call and 29 put contracts, with 249 days until expiration. Open interest stands at 31,839 calls and 21,954 puts, a put/call ratio of 0.69, which is tilted bullish, with calls outnumbering puts. At-the-money implied volatility near the $145.00 strike is 34.4%, which implies the market expects a move of about ±$41.37 (28.4%) in Merck stock by expiration.

The most open interest sits at the $80.00 call (12.38K contracts) and the $110.00 put (3.97K contracts).

Summary generated from market data by MetaCap's automated system. Methodology

MRK options chain · June 17, 2027

MRK calls and puts by strike price. Shaded cells are in the money.
Calls							Puts
OI	Vol	IV	Last	Bid	Ask	Strike	Bid	Ask	Last	IV	Vol	OI
0	1	—	75.61	0.00	0.00	40.00	0.00	3.05	0.35	100.2%	2	26
0	1	—	59.74	63.00	67.00	45.00	0.00	0.16	0.02	57.2%	2	30
1	1	118.4%	77.98	99.00	103.00	50.00	0.00	0.66	0.05	63.3%	1	39
1	1	107.6%	72.00	93.60	98.00	55.00	0.02	0.37	0.07	53.7%	2	45
5	8	61.6%	88.80	85.40	87.35	60.00	0.01	0.37	0.11	54.1%	1	344
34	1	94.3%	59.60	84.00	88.50	65.00	0.11	0.50	0.17	52.3%	1	549
36	1	54.9%	78.68	74.95	78.30	70.00	0.17	0.49	0.25	47.8%	2	242
111	10	51.9%	75.90	70.50	73.05	75.00	0.19	0.53	0.39	44.3%	1	163
12,379	3,450	59.3%	70.00	65.70	68.40	80.00	0.33	1.02	0.54	46.2%	1	983
155	29	55.3%	60.25	61.20	63.55	85.00	0.43	1.25	0.65	44.1%	1	308
1,449	5	52.7%	58.26	56.55	58.95	90.00	0.63	1.76	1.05	43.8%	1	3,724
114	1	50.8%	51.45	52.20	54.55	95.00	0.97	1.78	1.41	39.9%	2	388
1,516	1	47.9%	44.30	47.85	49.95	100.00	1.54	1.94	1.74	37.0%	145	2,356
347	1	46.0%	38.80	43.80	45.65	105.00	1.88	2.39	2.18	35.4%	3	1,148
1,295	1	44.5%	40.25	39.40	41.55	110.00	2.59	3.50	2.91	36.1%	1	3,972
897	9	43.2%	32.55	34.90	37.60	115.00	3.20	4.40	3.77	35.1%	29	1,362
930	5	41.4%	28.04	31.30	33.65	120.00	4.70	5.25	4.85	33.6%	11	1,359
572	1	40.2%	24.95	28.05	30.00	125.00	5.60	6.80	6.10	33.5%	74	709
834	1	39.1%	21.99	23.95	26.60	130.00	6.55	9.20	7.70	34.9%	29	1,163
510	40	37.6%	22.98	21.70	23.15	135.00	8.90	11.15	9.55	34.5%	14	1,256
627	2	38.0%	17.17	19.10	20.80	140.00	10.95	12.90	11.75	33.1%	19	522
1,603	7	37.7%	17.63	16.65	18.30	145.00	13.25	14.60	14.05	31.1%	5	206
MRK $145.60
1,444	3	36.1%	12.95	13.45	15.45	150.00	16.00	17.30	16.74	30.8%	37	437
782	3	37.6%	9.70	12.30	14.25	155.00	19.00	20.35	19.64	30.7%	83	211
1,099	3	36.5%	8.20	10.25	12.05	160.00	22.10	24.50	21.29	32.4%	84	238
744	18	35.9%	9.75	9.15	10.25	165.00	25.45	26.70	24.45	29.5%	23	63
1,826	1	36.8%	5.90	7.80	9.30	170.00	28.85	31.40	28.85	31.6%	2	104
275	1	36.3%	5.05	6.10	7.90	175.00	32.75	35.20	36.70	31.4%	1	3
446	7	36.0%	4.90	5.20	6.70	180.00	—	—	—	—	—	—
119	71	36.5%	5.15	4.15	6.00	185.00	—	—	—	—	—	—
359	15	34.6%	4.44	4.05	4.50	190.00	—	—	—	—	—	—
135	1	35.1%	3.25	3.40	4.00	195.00	49.35	51.95	48.20	30.4%	8	4
1,149	29	35.2%	2.51	2.29	3.45	200.00	—	—	—	—	—	—
11	9	35.9%	2.46	2.01	2.70	210.00	—	—	—	—	—	—
11	7	36.1%	1.54	1.04	2.03	220.00	—	—	—	—	—	—
23	23	38.7%	1.24	0.74	2.01	230.00	—	—	—	—	—	—

In-the-money callsIn-the-money puts. IV = implied volatility, OI = open interest (contracts). Each contract covers 100 shares. Quotes delayed at least 15 minutes.

Frequently asked questions

What is the MRK put/call ratio?

For the June 17, 2027 expiration, the MRK put/call ratio based on open interest is 0.69 (21,954 puts vs 31,839 calls), and 0.16 based on today's volume. A ratio above 1 means more puts than calls.

What is MRK's implied volatility?

At-the-money implied volatility for MRK options expiring June 17, 2027 is about 34.4%, an annualized estimate of how much the market expects Merck stock to move.

How many MRK option expiration dates are there?

MRK has 15 listed expiration dates, from Oct 16, 2026 to Jan 19, 2029.

What does "in the money" mean?

A call is in the money when the strike price is below the current share price; a put is in the money when the strike is above it. In-the-money contracts have intrinsic value and are shaded in the table.