MRK - Options Database

MRK

MERCK & CO. INC.

$124.40 -2.43%

$124.71 (+0.25%)🌙

as of 07/20 06:49 PM

(7/17 18:59) ◀

Monday, July 20, 2026 (6:49pm)

▶ (7/21 18:48)

◀ 7/20 18:49 ▶

Option Volume

Detail

ℹ

Current (07/20) 11,623

Calls: 8,198 (71%)

Puts: 3,425 (29%)

Prior (07/17) 29,506

Calls: 25,099 (85%)

Puts: 4,407 (15%)

Current vs Prior -60.61%

Calls: -67.34% (Calls)

Puts: -22.28% (Puts)

Prior 7-Day Total 138,891

Calls: 102,101 (74%)

Puts: 36,790 (26%)

Prior 7-Day Average 19,841

Calls: 14,585 (74%)

Puts: 5,255 (26%)

Current vs Prior 7-Day Avg -41.42%

Calls: -43.79%

Puts: -34.83%

Sentiment BULLISH

Dollar Volume

Detail

ℹ

Current (07/20) $3.72M

Calls: $2.48M (67%)

Puts: $1.24M (33%)

Prior (07/17) $8.93M

Calls: $7.61M (85%)

Puts: $1.33M (15%)

Current vs Prior -58.38%

Calls: -67.37%

Puts: -6.82%

Prior 7-Day Total $41.21M

Calls: $31.55M (77%)

Puts: $9.66M (23%)

Prior 7-Day Average $5.89M

Calls: $4.51M (77%)

Puts: $1.38M (23%)

Current vs Prior 7-Day Avg -36.84%

Calls: -44.91%

Puts: -10.48%

Sentiment BULLISH

Put/Call Ratio

Detail

ℹ

Current (07/20) 0.42

Prior (07/17) 0.18

Current vs Prior +137.94%

Prior 7-Day Average 0.48

Current vs Prior 7-Day Avg -12.25%

Sentiment BULLISH

Open Interest

Detail

ℹ

Current (07/20) 231,529

Calls: 133,949 (58%)

Puts: 97,580 (42%)

Prior (07/17) 286,052

Calls: 194,052 (68%)

Puts: 92,000 (32%)

Current vs Prior -19.06%

Prior 7-Day Total 1,766,635

Calls: 1,087,033 (62%)

Puts: 679,602 (38%)

Prior 7-Day Average 252,376

Calls: 155,290 (62%)

Puts: 97,086 (38%)

Current vs Prior 7-Day Avg -8.26%

Sentiment BEARISH

Expected Move

Detail

ℹ

WKMO Expiry (07/24) | Next (07/31)Expiry (08/21) | Next (09/18)

Current 2.96% | 4.54%8.36% | 12.52%

Prior 3.44% | 4.82%1.00% | 10.47%

Current vs Prior -13.89% | -5.69%+739.28% | +19.61%

Prior 7-Day Avg 2.70% | 4.23%2.63% | 10.63%

Current vs 7-Day Avg +9.75% | +7.41%+217.30% | +17.77%

Prior 7-Day Eod 3.44% | 4.82%1.00% | 10.47%

Current vs 7-Day Eod -13.89% | -5.69%+739.28% | +19.61%

Sentiment BULLISHBEARISH

Relative Spread

Detail

ℹ

Expiry | Next

Current 24.70% | 10.94%

Calls: 17.93% | 12.45%

Puts: 31.48% | 9.43%

Prior 24.70% | 10.94%

Calls: 17.93% | 12.45%

Puts: 31.48% | 9.43%

Current vs Prior +0.00% | +0.00%

Prior 7-Day Avg 24.70% | 10.94%

Calls: 17.93% | 12.45%

Puts: 31.48% | 9.43%

Current vs 7-Day Avg +0.00% | +0.00%

Liquidity Expensive

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🤖 AI Insights

Moderately bullish flow with 67% call dollar volume ($2.48M). Light premium activity with dollar volume down 58% vs prior. Below-average activity with volume down 61% vs prior. Extreme bullish P/C ratio of 0.42 - heavy call buying (8,198 calls vs 3,425 puts).

Smart Money BULLISH

Retail Flow BULLISH

Overall BULLISH

Dollar Volume

Option Volume

Put/Call Ratio

Open Interest

Expected Move

Current BULLISH

Prior BULLISH

7-Day Avg BULLISH

Current BULLISH

Prior BULLISH

7-Day Avg NEUTRAL

Current BULLISH

Prior BULLISH

7-Day Avg NEUTRAL

Current BULLISH

Prior BULLISH

7-Day Avg NEUTRAL

Current BEARISH

Prior BULLISH

7-Day Avg BULLISH

📈 Options Analysis

🎯 Tightest Spreads

💰 Best Value Under $1

📊 High Delta (ITM)

🔥 High Volume

⏰ Backwardation

📈 Debit Spreads

📉 Credit Spreads

📅 Calendar Spreads

⚡ Straddles

🔀 Strangles

🦅 Iron Condors

🦋 Butterflies

⚖️ Ratio Spreads

🛡️ Covered Calls

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Tightest Spreads

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Best Value <$1

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High Delta

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Ratio Spreads

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Covered Calls

Options with the tightest bid-ask spreads (<10%). Lower spreads = better fills and less slippage. Showing top 26 of results (avg 8.2%, best 4.2%)

CALLS (5)

Strike	Expiry	Bid	Ask	Mark	Spread	Vol	Delta	OI
$125.00	Aug 21	4.70	4.90	$4.80	4.2%	99	0.50	3.8K
$130.00	Aug 21	2.66	2.80	$2.73	5.1%	574	0.35	4.1K
$120.00	Aug 21	7.50	8.00	$7.75	6.5%	8	0.66	1.1K
$110.00	Aug 21	15.20	16.30	$15.75	7.0%	4	0.89	771
$122.00	Jul 31	3.80	4.10	$3.95	7.6%	1	0.66	63

PUTS (5)

Strike	Expiry	Bid	Ask	Mark	Spread	Vol	Delta	OI
$125.00	Aug 21	4.90	5.20	$5.05	5.9%	32	0.50	385
$120.00	Aug 21	2.79	2.98	$2.89	6.6%	55	0.34	3.1K
$127.00	Jul 24	3.10	3.35	$3.23	7.7%	34	0.73	182
$125.00	Jul 31	2.70	2.92	$2.81	7.8%	8	0.52	255
$127.00	Aug 21	5.90	6.40	$6.15	8.1%	36	0.56	--

Affordable options under $1.00 per contract. Great for defined-risk strategies with minimal capital. 2 found (avg $0.94, cheapest $0.91)

CALLS (2)

Strike	Expiry	Bid	Ask	Mark	Spread	Vol	Delta	OI
$129.00	Jul 31	0.82	1.00	$0.91	19.8%	42	0.25	100
$126.00	Jul 24	0.88	1.06	$0.97	18.6%	54	0.36	475

PUTS (0)

No puts meet the criteria

In-the-money options with delta >0.50. Higher probability of profit, lower leverage. 49 found (avg delta 0.70, highest 1.00)

CALLS (5)

Strike	Expiry	Bid	Ask	Mark	Spread	Vol	Delta	OI
$110.00	Jul 24	13.95	15.75	$14.85	12.1%	1	0.99	--
$115.00	Jul 31	9.30	11.05	$10.18	17.2%	3	0.93	--
$119.00	Jul 24	5.20	6.95	$6.08	28.8%	1	0.90	20
$104.00	Jul 24	20.00	22.45	$21.23	11.5%	1	0.89	--
$110.00	Aug 21	15.20	16.30	$15.75	7.0%	4	0.89	771

PUTS (5)

Strike	Expiry	Bid	Ask	Mark	Spread	Vol	Delta	OI
$135.00	Jul 24	9.05	11.45	$10.25	23.4%	2	1.00	--
$137.00	Jul 24	11.05	13.15	$12.10	17.4%	2	1.00	--
$138.00	Jul 24	11.95	14.15	$13.05	16.9%	2	0.95	--
$129.00	Jul 24	3.80	5.65	$4.72	39.2%	11	0.86	21
$128.00	Jul 24	3.50	4.40	$3.95	22.8%	5	0.81	52

Most actively traded options today. High liquidity = easy entry/exit. 201 active (total vol 7.6K, top 1.2K)

CALLS (5)

Strike	Expiry	Bid	Ask	Mark	Spread	Vol	Delta	OI
$127.00	Aug 21	3.75	4.10	$3.93	8.9%	1.2K	0.44	--
$140.00	Aug 21	0.58	0.97	$0.77	50.6%	581	0.13	5.2K
$130.00	Aug 21	2.66	2.80	$2.73	5.1%	574	0.35	4.1K
$128.00	Jul 31	1.09	1.26	$1.18	14.4%	338	0.30	554
$132.00	Jul 24	0.08	0.12	$0.10	40.0%	286	0.05	277

PUTS (5)

Strike	Expiry	Bid	Ask	Mark	Spread	Vol	Delta	OI
$115.00	Aug 21	1.44	1.58	$1.51	9.3%	146	0.20	1.4K
$120.00	Aug 7	1.80	2.41	$2.11	28.9%	100	0.31	50
$120.00	Jul 31	0.58	0.93	$0.76	46.1%	91	0.22	364
$126.00	Jul 24	2.41	2.62	$2.52	8.3%	84	0.64	109
$122.00	Jul 24	0.61	0.78	$0.70	24.3%	81	0.27	169

Term structure inversion — near-term IV higher than far-term IV at the same strike. Signals expected near-term catalyst or volatility event. 30 strikes (avg 15.8%, max 105.7%)

CALLS (5)

Strike	Near Exp	Far Exp	Near IV	Far IV	Back%	Vol	OI
$110.00	Jul 24	Aug 21	47.0%	35.0%	34.3%	5	771
$139.00	Aug 7	Aug 28	41.4%	33.6%	23.1%	7	326
$145.00	Jul 31	Aug 21	39.5%	33.8%	16.9%	99	1.5K
$137.00	Jul 24	Aug 28	40.2%	34.7%	15.9%	11	--
$135.00	Jul 24	Aug 28	36.8%	32.5%	13.2%	81	1.2K

PUTS (5)

Strike	Near Exp	Far Exp	Near IV	Far IV	Back%	Vol	OI
$100.00	Jul 24	Aug 28	84.8%	41.2%	105.7%	2	--
$110.00	Jul 24	Aug 28	47.0%	34.3%	37.0%	13	26
$116.00	Jul 24	Aug 28	40.4%	31.6%	28.0%	21	37
$105.00	Jul 31	Aug 28	44.2%	36.1%	22.4%	14	38
$117.00	Aug 7	Aug 28	39.2%	33.0%	18.5%	7	7

Bull call spreads & bear put spreads with the best risk/reward ratios. Pay a debit upfront, defined max loss. 131 found (best R:R 40.67, avg 4.13)

BULL CALL (5)

Buy	Sell	Expiry	Debit	Max Gain	Max Loss	R:R	BE
$140.00	$145.00	Aug 14	$0.15	$4.85	$0.15	32.33	$140.15
$138.00	$140.00	Jul 31	$0.11	$1.89	$0.11	17.18	$138.11
$140.00	$143.00	Aug 7	$0.17	$2.83	$0.17	16.65	$140.17
$135.00	$137.00	Aug 28	$0.12	$1.88	$0.12	15.67	$135.12
$131.00	$132.00	Jul 31	$0.10	$0.90	$0.10	9.00	$131.10

BEAR PUT (5)

Buy	Sell	Expiry	Debit	Max Gain	Max Loss	R:R	BE
$105.00	$100.00	Aug 28	$0.12	$4.88	$0.12	40.67	$104.88
$115.00	$110.00	Jul 31	$0.14	$4.86	$0.14	34.71	$114.86
$105.00	$100.00	Aug 21	$0.20	$4.80	$0.20	24.00	$104.80
$110.00	$105.00	Aug 21	$0.31	$4.69	$0.31	15.13	$109.69
$114.00	$108.00	Aug 7	$0.49	$5.51	$0.49	11.24	$113.51

Bear call spreads & bull put spreads collecting premium. Receive credit upfront, profit if stock stays in range. 147 found (best R:R 38.13, avg 1.29)

BEAR CALL (5)

Sell	Buy	Expiry	Credit	Max Gain	Max Loss	R:R	BE
$110.00	$119.00	Jul 24	$8.77	$8.77	$0.23	38.13	$118.77
$117.00	$120.00	Aug 14	$2.75	$2.75	$0.25	11.00	$119.75
$115.00	$120.00	Jul 31	$4.50	$4.50	$0.50	9.00	$119.50
$110.00	$120.00	Aug 21	$8.00	$8.00	$2.00	4.00	$118.00
$118.00	$121.00	Aug 7	$2.25	$2.25	$0.75	3.00	$120.25

BULL PUT (5)

Sell	Buy	Expiry	Credit	Max Gain	Max Loss	R:R	BE
$137.00	$135.00	Jul 24	$1.85	$1.85	$0.15	12.33	$135.15
$135.00	$129.00	Jul 24	$5.53	$5.53	$0.47	11.77	$129.47
$129.00	$128.00	Jul 24	$0.77	$0.77	$0.23	3.35	$128.23
$115.00	$114.00	Aug 28	$0.77	$0.77	$0.23	3.35	$114.23
$128.00	$127.00	Jul 24	$0.72	$0.72	$0.28	2.57	$127.28

Same strike, different expirations. Sell near-term, buy far-term. Profits from time decay differential. 43 found (avg debit $0.59, cheapest $0.07)

CALLS (5)

Strike	Near Exp	Far Exp	Net Debit	Near IV	Far IV
$135.00	Jul 24	Jul 31	$0.13	36.8%	29.9%
$134.00	Jul 24	Jul 31	$0.17	37.4%	29.9%
$139.00	Aug 7	Aug 21	$0.19	41.4%	33.6%
$136.00	Jul 24	Jul 31	$0.21	37.6%	34.2%
$131.00	Jul 24	Jul 31	$0.31	37.1%	29.2%

PUTS (5)

Strike	Near Exp	Far Exp	Net Debit	Near IV	Far IV
$110.00	Jul 24	Jul 31	$0.07	47.0%	36.9%
$116.00	Jul 24	Jul 31	$0.09	40.4%	27.9%
$100.00	Jul 24	Aug 21	$0.16	84.8%	40.6%
$115.00	Jul 24	Jul 31	$0.18	38.1%	31.7%
$118.00	Jul 24	Jul 31	$0.27	36.9%	28.8%

Buy call + put at the same strike and expiry. Profits from large moves in either direction. 43 found (cheapest 2.54% of stock, avg 6.30%)

Strike	Expiry	Call$	Put$	Total	BE Low	BE High	Cost%
$125.00	Jul 24	$1.35	$1.81	$3.16	$121.84	$128.16	2.54%
$124.00	Jul 24	$1.87	$1.34	$3.21	$120.79	$127.21	2.58%
$123.00	Jul 24	$2.37	$1.03	$3.40	$119.60	$126.40	2.73%
$126.00	Jul 24	$0.97	$2.52	$3.49	$122.51	$129.49	2.81%
$122.00	Jul 24	$3.09	$0.70	$3.79	$118.21	$125.79	3.05%
$127.00	Jul 24	$0.66	$3.23	$3.89	$123.11	$130.89	3.13%
$128.00	Jul 24	$0.44	$3.95	$4.39	$123.61	$132.39	3.53%
$121.00	Jul 24	$4.03	$0.46	$4.49	$116.51	$125.49	3.61%
$129.00	Jul 24	$0.29	$4.72	$5.01	$123.99	$134.01	4.03%
$124.00	Jul 31	$2.84	$2.25	$5.09	$118.91	$129.09	4.09%

Buy OTM call + OTM put at different strikes. Cheaper than straddles, needs bigger move to profit. 150 found (cheapest 0.44% of stock, avg 4.17%)

Call K	Put K	Expiry	Call$	Put$	Total	BE Low	BE High
$129.00	$120.00	Jul 24	$0.29	$0.26	$0.55	$119.45	$129.55
$128.00	$120.00	Jul 24	$0.44	$0.26	$0.70	$119.30	$128.70
$129.00	$121.00	Jul 24	$0.29	$0.46	$0.75	$120.25	$129.75
$128.00	$121.00	Jul 24	$0.44	$0.46	$0.90	$120.10	$128.90
$127.00	$120.00	Jul 24	$0.66	$0.26	$0.92	$119.08	$127.92
$129.00	$122.00	Jul 24	$0.29	$0.70	$0.99	$121.01	$129.99
$127.00	$121.00	Jul 24	$0.66	$0.46	$1.12	$119.88	$128.12
$128.00	$122.00	Jul 24	$0.44	$0.70	$1.14	$120.86	$129.14
$126.00	$120.00	Jul 24	$0.97	$0.26	$1.23	$118.77	$127.23
$129.00	$123.00	Jul 24	$0.29	$1.03	$1.32	$121.68	$130.32

Sell OTM put spread + OTM call spread. Collect premium, profit if stock stays between breakevens. 357 found (best R:R 9.00, avg credit $0.95)

Put Spread	Call Spread	Expiry	Credit	Max Loss	R:R	BE Low	BE High
117/118	124/125	Aug 21	$0.90	$0.10	9.00	$117.10	$124.90
122/123	124/125	Aug 21	$0.90	$0.10	9.00	$122.10	$124.90
119/120	126/127	Aug 28	$0.90	$0.10	9.00	$119.10	$126.90
121/122	126/127	Aug 21	$0.89	$0.11	8.09	$121.11	$126.89
122/123	124/125	Jul 31	$0.88	$0.12	7.33	$122.12	$124.88
124/125	127/128	Jul 31	$0.88	$0.12	7.33	$124.12	$127.88
116/117	118/121	Aug 7	$2.64	$0.36	7.33	$114.36	$120.64
118/119	128/129	Aug 7	$0.88	$0.12	7.33	$118.12	$128.88
119/120	126/127	Aug 21	$0.87	$0.13	6.69	$119.13	$126.87
116/117	123/125	Aug 28	$1.74	$0.26	6.69	$115.26	$124.74

Buy lower + upper strikes, sell 2x middle strike. Low cost, max profit at the middle strike at expiry. 61 found (best R:R 44.45, cheapest $0.05)

CALLS (5)

Low	Mid	High	Expiry	Debit	Max Gain	R:R
$127.00	$128.00	$129.00	Jul 31	$0.05	$0.95	19.00
$133.00	$134.00	$135.00	Aug 21	$0.05	$0.95	19.00
$123.00	$124.00	$125.00	Jul 31	$0.06	$0.94	15.67
$126.00	$127.00	$128.00	Jul 31	$0.06	$0.94	15.67
$130.00	$131.00	$132.00	Aug 7	$0.06	$0.94	15.67

PUTS (5)

Low	Mid	High	Expiry	Debit	Max Gain	R:R
$100.00	$105.00	$110.00	Aug 21	$0.11	$4.89	44.45
$125.00	$126.00	$127.00	Aug 21	$0.06	$0.94	15.67
$100.00	$105.00	$110.00	Aug 28	$0.33	$4.67	14.15
$121.00	$122.00	$123.00	Jul 24	$0.09	$0.91	10.11
$119.00	$120.00	$121.00	Jul 31	$0.10	$0.90	9.00

Buy 1 option, sell 2 at a different strike (1:2 ratio). Can be entered for a credit. Unlimited risk on naked leg. 89 found (best net $-0.15, 76 credits)

CALLS (5)

Buy K	Sell K	Ratio	Expiry	Net	Max Gain
$140.00	$145.00	1:2	Jul 31	$0.00	$5.00
$128.00	$133.00	1:2	Aug 14	-$0.21	$4.79
$140.00	$145.00	1:2	Aug 14	-$0.21	$4.79
$121.00	$126.00	1:2	Aug 14	-$1.05	$3.95
$115.00	$120.00	1:2	Jul 31	-$1.18	$3.82

PUTS (5)

Buy K	Sell K	Ratio	Expiry	Net	Max Gain
$110.00	$102.00	1:2	Jul 24	-$0.15	$7.85
$110.00	$105.00	1:2	Aug 28	$0.00	$5.00
$110.00	$105.00	1:2	Aug 21	-$0.07	$4.93
$105.00	$100.00	1:2	Aug 28	-$0.21	$4.79
$110.00	$106.00	1:2	Jul 31	-$1.16	$2.84

Sell OTM calls against 100 shares you own. Collect premium for income, capped upside at strike. Yield% = premium/stock price. 75 found (best yield 3.82%, avg 1.17%)

Strike	Expiry	Bid	Delta	OTM%	Yield%	If Called%	Vol	OI
$125.00	Aug 28	$4.75	0.50	0.5%	3.82%	4.30%	1	--
$125.00	Aug 21	$4.70	0.50	0.5%	3.78%	4.26%	99	3.8K
$126.00	Aug 28	$4.50	0.48	1.3%	3.62%	4.90%	1	3
$126.00	Aug 21	$4.05	0.47	1.3%	3.26%	4.54%	57	--
$125.00	Aug 7	$3.75	0.50	0.5%	3.01%	3.50%	100	137
$127.00	Aug 21	$3.75	0.44	2.1%	3.01%	5.10%	1.2K	--
$127.00	Aug 28	$3.75	0.45	2.1%	3.01%	5.10%	1	6
$126.00	Aug 14	$3.45	0.47	1.3%	2.77%	4.06%	8	4
$126.00	Aug 7	$3.30	0.46	1.3%	2.65%	3.94%	69	52
$128.00	Aug 21	$3.25	0.41	2.9%	2.61%	5.51%	38	--

Current 5-Minute Volume Snapshots

Time (HH:MM)	Total Volume	Call Volume	Put Volume	Volume Change
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Prior's 5-Minute Volume Snapshots

Time (HH:MM)	Total Volume	Call Volume	Put Volume	Volume Change
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Current Put/Call Breakdown

Total Calls 8,198

Total Puts 3,425

Put/Call Ratio 0.42

Net Difference 4,773

Prior's Put/Call Breakdown

Total Calls 25,099

Total Puts 4,407

Put/Call Ratio 0.18

Net Difference 20,692

Prior 7-Day Put/Call Summary

Total Calls 102,101

Total Puts 36,790

Average Put/Call Ratio 0.48

Ratio Trend Rising

Daily Put/Call History (Last 7 Days)

Date	Calls	Puts	Ratio	Net Diff
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Upcoming Earnings - 2 Weeks Prior

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Upcoming Earnings - 1 Week Prior

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Earnings This Week

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Earnings - Day Before / Day After

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Options Activity Around Earnings

Ticker	Earnings Date	Days Away	Call Volume	Put Volume	IV Rank
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Option Volume

Dollar Volume

Put/Call Ratio

Open Interest

Expected Move

Relative Spread

🤖 AI Insights

📈 Options Analysis

Current 5-Minute Volume Snapshots

Prior's 5-Minute Volume Snapshots

Current Put/Call Breakdown

Prior's Put/Call Breakdown

Prior 7-Day Put/Call Summary

Daily Put/Call History (Last 7 Days)

Upcoming Earnings - 2 Weeks Prior

Upcoming Earnings - 1 Week Prior

Earnings This Week

Earnings - Day Before / Day After

Options Activity Around Earnings

Chart Title

Price — Past 7 Days

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