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MRK20261218C155
MRK Dec 18 2026 155.00 Call (MRK261218C00155000)
option OPRA

EOD

Jul 21, 2026

1.63-46.557%(-1.42)16

Date (EDT)	Open	High	Low	Close	Change	Volume	Open Interest	Change Since
2026-07-21	1.8200	1.8200	1.6300	1.6300	-46.557%	16	1,981	0.000%
2026-07-17	2.6700	3.0500	2.6700	3.0500	+22.984%	17	1,980	-46.557%
2026-07-16	2.1000	2.4800	2.1000	2.4800	+41.714%	12	1,967	-34.274%
2026-07-15	1.8300	1.9200	1.7100	1.7500	+25.000%	15	1,977	-6.857%
2026-07-14	1.3100	1.4800	1.3100	1.4000	-20.000%	29	1,964	+16.429%
2026-07-13	1.7600	1.7600	1.7500	1.7500	0.000%	7	1,959	-6.857%
2026-07-10	2.0000	2.0300	1.7500	1.7500	-18.224%	37	1,954	-6.857%
2026-07-09	2.2100	2.2400	2.1400	2.1400	-13.360%	6	1,953	-23.832%
2026-07-08	2.5200	2.5200	2.2600	2.4700	-17.667%	89	1,952	-34.008%
2026-07-07	3.0000	3.0000	3.0000	3.0000	+30.435%	8	1,976	-45.667%
2026-07-06	2.9000	2.9000	2.3000	2.3000	-20.690%	10	1,980	-29.130%
2026-07-02	2.9000	2.9000	2.9000	2.9000	-2.027%	1	1,985	-43.793%
2026-06-29	2.5700	2.9600	2.5700	2.9600	+8.029%	3	1,985	-44.932%
2026-06-26	2.7000	2.7400	2.7000	2.7400	+29.245%	31	1,985	-40.511%
2026-06-25	2.1200	2.1200	2.1200	2.1200	+63.077%	1	1,984	-23.113%
2026-06-23	1.3000	1.3000	1.3000	1.3000	+23.810%	13	1,984	+25.385%
2026-06-22	1.0500	1.0500	1.0500	1.0500	-5.405%	4	1,984	+55.238%
2026-06-16	1.0400	1.1100	1.0400	1.1100	-42.188%	6	1,984	+46.847%
2026-06-11	1.8900	1.9500	1.8900	1.9200	+9.091%	10	1,984	-15.104%
2026-06-10	1.7600	1.7600	1.7600	1.7600	+3.529%	1	1,984	-7.386%
2026-06-08	1.7000	1.7000	1.7000	1.7000	+3.659%	14	1,983	-4.118%
2026-06-04	1.6400	1.6400	1.6400	1.6400	-17.172%	1	1,983	-0.610%
2026-05-26	2.2000	2.2000	1.9200	1.9800	+7.027%	9	1,983	-17.677%
2026-05-22	1.8500	1.8500	1.8500	1.8500	+54.167%	2	1,985	-11.892%
2026-05-01	1.1400	1.2000	1.1400	1.2000	+27.660%	69	2,053	+35.833%
2026-04-30	1.0400	1.0400	0.9400	0.9400	-6.000%	7	2,053	+73.404%
2026-04-29	1.0000	1.0000	1.0000	1.0000	-9.091%	1	2,053	+63.000%
2026-04-28	1.0000	1.2000	1.0000	1.1000	-8.333%	6	2,054	+48.182%
2026-04-27	1.2000	1.2000	1.2000	1.2000	-6.250%	27	2,053	+35.833%
2026-04-22	1.3000	1.3000	1.2800	1.2800	-2.290%	30	2,080	+27.344%
2026-04-21	1.3900	1.3900	1.3100	1.3100	-26.404%	100	2,144	+24.427%
2026-04-20	1.7500	1.8500	1.7500	1.7800	+7.879%	24	2,144	-8.427%
2026-04-17	1.8000	1.8000	1.6500	1.6500	-32.927%	2	2,157	-1.212%
2026-04-13	2.6200	2.6200	2.4600	2.4600	-8.889%	73	2,157	-33.740%
2026-04-09	2.7000	2.7000	2.7000	2.7000	-11.475%	1	2,157	-39.630%
2026-04-08	2.9200	3.1300	2.8200	3.0500	+16.412%	57	2,158	-46.557%
2026-04-06	2.6200	2.6200	2.6200	2.6200	-15.484%	30	2,141	-37.786%
2026-03-31	3.1000	3.1000	3.1000	3.1000	0.000%	1	2,171	-47.419%
2026-03-27	3.1000	3.1000	3.1000	3.1000	+46.226%	1	2,171	-47.419%
2026-03-24	2.1000	2.1200	2.1000	2.1200	-15.200%	4	2,170	-23.113%
2026-03-10	2.5000	2.5000	2.5000	2.5000	+7.759%	30	2,170	-34.800%
2026-03-06	2.3200	2.3200	2.3200	2.3200	-3.333%	5	2,170	-29.741%
2026-03-05	2.4000	2.4000	2.4000	2.4000	-33.333%	30	2,170	-32.083%
2026-02-27	3.2500	3.6000	3.2500	3.6000	+18.033%	105	2,140	-54.722%
2026-02-18	3.3000	3.3000	3.0500	3.0500	-15.746%	62	2,191	-46.557%
2026-02-13	3.8000	3.8000	3.6000	3.6200	+27.018%	29	2,166	-54.972%
2026-02-11	2.7500	2.8500	2.7500	2.8500	+8.365%	2	2,166	-42.807%
2026-02-09	2.6300	2.6300	2.6300	2.6300	-24.857%	1	2,166	-38.023%
2026-02-06	3.5000	3.5000	3.5000	3.5000	+12.540%	1	2,165	-53.429%
2026-02-05	3.9600	3.9700	2.9100	3.1100	+3.667%	266	2,191	-47.588%
2026-02-04	2.2400	3.0000	2.2400	3.0000	+50.000%	465	2,231	-45.667%
2026-02-03	2.0800	2.2200	2.0000	2.0000	+16.959%	11	2,094	-18.500%
2026-02-02	1.6900	1.7100	1.5700	1.7100	+37.903%	80	2,097	-4.678%
2026-01-29	1.2400	1.2400	1.2400	1.2400	-24.848%	20	2,141	+31.452%
2026-01-21	1.6100	1.6500	1.6000	1.6500	+5.769%	10	2,165	-1.212%
2026-01-15	1.4200	1.5600	1.3400	1.5600	+95.000%	867	2,161	+4.487%
2026-01-14	0.8000	0.8000	0.8000	0.8000	-25.926%	1	1,546	+103.750%
2026-01-13	1.0800	1.0800	1.0800	1.0800	-22.857%	22	1,547	+50.926%
2026-01-07	1.6000	1.6000	1.4000	1.4000	+2.941%	811	1,569	+16.429%
2025-12-26	1.3600	1.3600	1.3600	1.3600	+30.769%	6	788	+19.853%
2025-12-22	1.0400	1.0400	1.0400	1.0400	+36.842%	6	779	+56.731%
2025-12-11	0.7600	0.7600	0.7600	0.7600	-15.556%	8	779	+114.474%
2025-12-04	0.9100	0.9100	0.8900	0.9000	-37.500%	57	779	+81.111%
2025-11-26	1.4400	1.4400	1.4400	1.4400	+2.857%	70	779	+13.194%
2025-11-25	1.1800	1.4000	1.1800	1.4000	+26.126%	124	779	+16.429%
2025-11-24	1.1000	1.1100	1.1000	1.1100	+50.000%	2	803	+46.847%
2025-11-21	0.7400	0.7400	0.7400	0.7400	-2.632%	1	805	+120.270%
2025-11-20	0.7600	0.7600	0.7600	0.7600	+46.154%	1	806	+114.474%
2025-11-19	0.5200	0.5200	0.5200	0.5200	-35.802%	1	806	+213.462%
2025-11-18	0.8100	0.8100	0.8100	0.8100	+161.290%	1	807	+101.235%
2025-11-11	0.3200	0.3200	0.3100	0.3100	+24.000%	6	806	+425.806%
2025-11-10	0.2500	0.2500	0.2500	0.2500	-51.923%	1	806	+552.000%
2025-11-07	0.2700	0.5200	0.2700	0.5200	+372.727%	5	806	+213.462%
2025-11-03	0.1100	0.1100	0.1100	0.1100	-75.556%	1	802	+1,381.818%
2025-10-29	0.4500	0.4500	0.4500	0.4500	+45.161%	1	802	+262.222%
2025-10-24	0.3100	0.3100	0.3100	0.3100	-26.190%	4	801	+425.806%
2025-10-23	0.4500	0.4500	0.3600	0.4200	-16.000%	3	801	+288.095%
2025-10-22	0.5000	0.5000	0.5000	0.5000	+13.636%	5	801	+226.000%
2025-10-03	0.4400	0.4400	0.4400	0.4400	+193.333%	20	797	+270.455%
2025-09-30	0.1500	0.1500	0.1500	0.1500	-31.818%	1	817	+986.667%
2025-09-25	0.1500	0.2200	0.1500	0.2200	+29.412%	2	817	+640.909%
2025-09-24	0.1700	0.1700	0.1700	0.1700	+13.333%	1	817	+858.824%
2025-08-07	0.1500	0.1500	0.1500	0.1500	-37.500%	150	817	+986.667%
2025-07-16	0.2400	0.2400	0.2400	0.2400	-35.135%	1	667	+579.167%
2025-07-14	0.4100	0.4100	0.3000	0.3700	-15.909%	163	666	+340.541%
2025-07-09	0.4500	0.4500	0.4400	0.4400	+57.143%	2	503	+270.455%
2025-06-26	0.2800	0.2800	0.2800	0.2800	-24.324%	1	503	+482.143%
2025-06-25	0.2600	0.3700	0.2600	0.3700	+27.586%	4	502	+340.541%
2025-06-23	0.2900	0.2900	0.2900	0.2900	-36.957%	1	502	+462.069%
2025-06-20	0.4600	0.4600	0.4200	0.4600	-13.208%	252	501	+254.348%
2025-06-06	0.5300	0.5300	0.5300	0.5300	0.000%	2	420	+207.547%
2025-06-05	0.5500	0.5500	0.5300	0.5300	-3.636%	3	420	+207.547%
2025-06-04	0.5500	0.5500	0.5500	0.5500	+17.021%	1	419	+196.364%
2025-06-02	0.4700	0.4700	0.4700	0.4700	-9.615%	1	420	+246.809%
2025-05-29	0.4800	0.5200	0.4800	0.5200	+10.638%	2	419	+213.462%
2025-05-16	0.4700	0.4700	0.4700	0.4700	-6.000%	4	418	+246.809%
2025-05-14	0.5000	0.5000	0.5000	0.5000	-16.667%	10	420	+226.000%
2025-05-07	0.6000	0.6000	0.6000	0.6000	-13.043%	2	410	+171.667%
2025-05-02	0.6900	0.6900	0.6900	0.6900	+21.053%	2	408	+136.232%
2025-04-21	0.5700	0.5700	0.5700	0.5700	-5.000%	3	409	+185.965%
2025-04-14	0.5600	0.6000	0.5600	0.6000	-3.226%	21	406	+171.667%
2025-04-11	0.5000	0.6200	0.4700	0.6200	-26.190%	416	386	+162.903%
2025-04-07	0.5800	0.8400	0.5800	0.8400	+42.373%	130	382	+94.048%
2025-04-04	0.5900	0.5900	0.5900	0.5900	-35.870%	2	380	+176.271%
2025-03-31	0.9200	0.9200	0.9200	0.9200	+12.195%	1	380	+77.174%
2025-03-25	0.8200	0.8200	0.8200	0.8200	+28.125%	1	379	+98.780%
2025-02-18	0.6200	0.6400	0.5700	0.6400	-5.882%	48	378	+154.688%
2025-02-14	0.6600	0.6800	0.6200	0.6800	-16.049%	240	324	+139.706%
2025-02-13	0.8100	0.8100	0.8100	0.8100	+3.846%	2	322	+101.235%
2025-02-11	0.7500	0.8000	0.7500	0.7800	-48.684%	105	322	+108.974%
2025-01-14	1.5200	1.5200	1.5200	1.5200	-12.644%	2	231	+7.237%
2025-01-13	1.8000	1.8000	1.7400	1.7400	-2.247%	5	229	-6.322%
2025-01-07	1.7800	1.7800	1.7800	1.7800	-4.301%	20	224	-8.427%
2024-12-20	1.8600	1.8600	1.8600	1.8600	-1.064%	5	244	-12.366%
2024-12-19	1.8800	1.8800	1.8800	1.8800	+8.046%	4	239	-13.298%
2024-12-11	1.7400	1.7400	1.7400	1.7400	-2.247%	3	239	-6.322%
2024-12-04	1.7800	1.7800	1.7800	1.7800	-6.316%	19	239	-8.427%
2024-11-25	1.9000	1.9000	1.9000	1.9000	+35.714%	2	239	-14.211%
2024-11-15	1.4000	1.4000	1.4000	1.4000	-21.788%	30	237	+16.429%
2024-10-31	1.7900	1.7900	1.7900	1.7900	-16.744%	1	222	-8.939%
2024-10-30	2.1500	2.1500	2.1500	2.1500	+7.500%	10	221	-24.186%
2024-10-28	2.0000	2.0000	2.0000	2.0000	-2.439%	10	211	-18.500%
2024-10-25	2.0600	2.0600	2.0500	2.0500	-13.502%	4	201	-20.488%
2024-10-22	2.3700	2.3700	2.3700	2.3700	-1.250%	1	200	-31.224%
2024-10-21	2.4000	2.4000	2.4000	2.4000	-18.644%	20	199	-32.083%
2024-10-14	2.9500	2.9500	2.9500	2.9500	-7.813%	10	179	-44.746%
2024-10-03	3.1500	3.2000	3.1500	3.2000	-7.246%	31	169	-49.063%
2024-10-02	3.4500	3.4500	3.4500	3.4500	-1.146%	1	138	-52.754%
2024-10-01	3.4900	3.4900	3.4900	3.4900	+2.647%	1	139	-53.295%
2024-09-26	3.4500	3.4500	3.4000	3.4000	-17.275%	28	138	-52.059%
2024-08-02	4.1100	4.1100	4.1100	4.1100	-8.667%	1	110	-60.341%
2024-07-30	4.2600	4.5000	4.2600	4.5000	-37.500%	12	110	-63.778%
2024-07-18	7.2500	7.2500	7.2000	7.2000	-4.255%	21	108	-77.361%
2024-07-16	7.5200	7.5200	7.5200	7.5200	-10.795%	1	88	-78.324%
2024-07-15	8.4300	8.4300	8.4300	8.4300	-22.661%	1	89	-80.664%
2024-06-26	10.9000	10.9000	10.9000	10.9000	+18.478%	1	89	-85.046%
2024-06-14	9.2000	9.2000	9.2000	9.2000	+2.222%	4	88	-82.283%
2024-06-06	9.0000	9.0000	9.0000	9.0000	-6.736%	2	88	-81.889%
2024-06-03	9.4000	9.6500	9.4000	9.6500	-8.962%	70	86	-83.109%
2024-05-22	10.6000	10.6000	10.6000	10.6000	+1.435%	1	32	-84.623%
2024-05-15	10.4500	10.4500	10.4500	10.4500	-7.358%	1	31	-84.402%
2024-04-25	11.2800	11.2800	11.2800	11.2800	+19.492%	10	30	-85.550%
2024-04-24	9.4400	9.4400	9.4400	9.4400	+0.426%	9	20	-82.733%
2024-04-23	9.4000	9.4000	9.4000	9.4000	-4.082%	10	11	-82.660%
2024-04-22	9.8000	9.8000	9.8000	9.8000	0.000%	1	1	-83.367%