Tour v381
MRK
MERCK & CO. INC.
$126.26 +1.50%
$126.00 (-0.21%)🌙
as of 07/21 06:48 PM
(7/20 18:49) ◀
|
Tuesday, July 21, 2026 (6:48pm)
January 2026
|
▶ (7/22 20:02)
◀ 7/21 18:48 ▶

Option Volume

Detail
ℹ
Current (07/21) 13,079
Calls: 9,519 (73%)
Puts: 3,560 (27%)
Prior (07/20) 11,623
Calls: 8,198 (71%)
Puts: 3,425 (29%)
Current vs Prior +12.53%
Calls: +16.11% (Calls)
Puts: +3.94% (Puts)
Prior 7-Day Total 140,068
Calls: 105,380 (75%)
Puts: 34,688 (25%)
Prior 7-Day Average 20,009
Calls: 15,054 (75%)
Puts: 4,955 (25%)
Current vs Prior 7-Day Avg -34.64%
Calls: -36.77%
Puts: -28.16%
Sentiment BULLISH

Dollar Volume

Detail
ℹ
Current (07/21) $5.11M
Calls: $4.11M (80%)
Puts: $1.00M (20%)
Prior (07/20) $3.72M
Calls: $2.48M (67%)
Puts: $1.24M (33%)
Current vs Prior +37.46%
Calls: +65.52%
Puts: -18.95%
Prior 7-Day Total $41.77M
Calls: $32.26M (77%)
Puts: $9.51M (23%)
Prior 7-Day Average $5.97M
Calls: $4.61M (77%)
Puts: $1.36M (23%)
Current vs Prior 7-Day Avg -14.35%
Calls: -10.83%
Puts: -26.29%
Sentiment BULLISH

Put/Call Ratio

Detail
ℹ
Current (07/21) 0.37
Prior (07/20) 0.42
Current vs Prior -10.48%
Prior 7-Day Average 0.38
Current vs Prior 7-Day Avg -0.34%
Sentiment BULLISH

Open Interest

Detail
ℹ
Current (07/21) 218,205
Calls: 132,078 (61%)
Puts: 86,127 (39%)
Prior (07/20) 231,529
Calls: 133,949 (58%)
Puts: 97,580 (42%)
Current vs Prior -5.75%
Prior 7-Day Total 1,763,812
Calls: 1,084,668 (61%)
Puts: 679,144 (39%)
Prior 7-Day Average 251,973
Calls: 154,952 (61%)
Puts: 97,020 (39%)
Current vs Prior 7-Day Avg -13.40%
Sentiment BEARISH

Expected Move

Detail
ℹ
Expiry (07/24) | Next (07/31)Expiry (08/21) | Next (09/18)
Current 2.63% | 4.25%8.10% | 12.00%
Prior 2.96% | 4.54%8.36% | 12.52%
Current vs Prior -11.11% | -6.36%-3.08% | -4.19%
Prior 7-Day Avg 2.86% | 4.33%3.29% | 10.84%
Current vs 7-Day Avg -8.13% | -1.86%+146.62% | +10.69%
Prior 7-Day Eod 2.96% | 4.54%8.36% | 12.52%
Current vs 7-Day Eod -11.11% | -6.36%-3.08% | -4.19%
Sentiment BULLISHBULLISH

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
+
Add Card

🤖 AI Insights

Strong bullish conviction with 80% of dollar volume in calls ($4.11M) vs puts ($1.00M). Extreme bullish P/C ratio of 0.37 - heavy call buying (9,519 calls vs 3,560 puts). Call-heavy open interest (132,078 calls vs 86,127 puts) suggests bullish positioning.

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

Options with the tightest bid-ask spreads (<10%). Lower spreads = better fills and less slippage. Showing top 28 of results (avg 8.2%, best 5.3%)

CALLS (5)
StrikeExpiryBidAskMarkSpreadVolDeltaOI
$130.00Aug 213.403.60$3.505.7%1620.404.5K
$131.00Aug 213.003.20$3.106.5%4750.372
$135.00Aug 211.861.99$1.936.7%5160.265.0K
$102.00Jul 2423.0524.90$23.987.7%10.91--
$125.00Aug 215.606.05$5.827.7%500.563.9K
PUTS (5)
StrikeExpiryBidAskMarkSpreadVolDeltaOI
$131.00Aug 217.307.70$7.505.3%60.63--
$129.00Aug 216.106.45$6.285.6%20.56--
$128.00Aug 215.505.85$5.686.2%70.5477
$126.00Aug 73.553.80$3.686.8%40.4723
$123.00Aug 213.153.40$3.287.6%50.3846

Affordable options under $1.00 per contract. Great for defined-risk strategies with minimal capital. 1 found (avg $0.83, cheapest $0.83)

CALLS (0)
No calls meet the criteria
PUTS (1)
StrikeExpiryBidAskMarkSpreadVolDeltaOI
$125.00Jul 240.750.90$0.8318.1%580.35209

In-the-money options with delta >0.50. Higher probability of profit, lower leverage. 51 found (avg delta 0.74, highest 0.99)

CALLS (5)
StrikeExpiryBidAskMarkSpreadVolDeltaOI
$110.00Jul 2414.7016.90$15.8013.9%10.9922
$119.00Jul 246.257.90$7.0823.3%140.9720
$120.00Jul 245.307.65$6.4836.3%40.96190
$118.00Jul 247.108.70$7.9020.3%40.94--
$121.00Jul 244.755.90$5.3321.6%60.93590
PUTS (5)
StrikeExpiryBidAskMarkSpreadVolDeltaOI
$131.00Jul 244.506.15$5.3331.0%20.8964
$130.00Jul 243.505.25$4.3840.0%40.8336
$129.00Jul 242.993.40$3.2012.8%30.7730
$131.00Aug 217.307.70$7.505.3%60.63--
$130.00Aug 216.457.15$6.8010.3%50.60265

Most actively traded options today. High liquidity = easy entry/exit. 174 active (total vol 7.5K, top 1.9K)

CALLS (5)
StrikeExpiryBidAskMarkSpreadVolDeltaOI
$130.00Jul 240.290.38$0.3426.5%1.9K0.17716
$135.00Aug 211.861.99$1.936.7%5160.265.0K
$131.00Aug 213.003.20$3.106.5%4750.372
$140.00Aug 210.901.09$1.0019.0%3450.165.2K
$129.00Jul 240.350.59$0.4751.1%2420.23354
PUTS (5)
StrikeExpiryBidAskMarkSpreadVolDeltaOI
$110.00Aug 210.510.69$0.6030.0%4040.092.6K
$122.00Jul 310.550.95$0.7553.3%2820.22150
$125.00Aug 73.103.40$3.259.2%2390.4349
$120.00Aug 212.192.46$2.3311.6%2160.293.2K
$123.00Jul 311.021.21$1.1217.0%1220.2847

Term structure inversion — near-term IV higher than far-term IV at the same strike. Signals expected near-term catalyst or volatility event. 18 strikes (avg 39.7%, max 249.2%)

CALLS (5)
StrikeNear ExpFar ExpNear IVFar IVBack%VolOI
$150.00Jul 24Aug 21117.4%33.6%249.2%295
$110.00Jul 24Aug 2162.7%36.7%70.8%1122
$118.00Jul 24Aug 750.1%36.9%35.5%5--
$133.00Jul 24Aug 2845.4%34.0%33.4%10297
$135.00Jul 24Aug 2841.6%31.7%31.4%381.2K
PUTS (5)
StrikeNear ExpFar ExpNear IVFar IVBack%VolOI
$110.00Jul 24Aug 2162.7%36.7%70.8%4052.6K
$118.00Jul 24Aug 2150.1%33.2%50.9%142
$115.00Jul 24Aug 2849.9%34.7%43.7%35
$116.00Jul 24Aug 2847.8%34.9%36.9%841
$105.00Aug 14Aug 2843.4%38.7%12.0%1824

Bull call spreads & bear put spreads with the best risk/reward ratios. Pay a debit upfront, defined max loss. 116 found (best R:R 34.71, avg 3.97)

BULL CALL (5)
BuySellExpiryDebitMax GainMax LossR:RBE
$145.00$150.00Aug 21$0.17$4.83$0.1728.41$145.17
$133.00$136.00Jul 31$0.13$2.87$0.1322.08$133.13
$136.00$140.00Jul 31$0.19$3.81$0.1920.05$136.19
$137.00$138.00Aug 21$0.11$0.89$0.118.09$137.11
$142.00$143.00Aug 21$0.11$0.89$0.118.09$142.11
BEAR PUT (5)
BuySellExpiryDebitMax GainMax LossR:RBE
$115.00$110.00Jul 31$0.14$4.86$0.1434.71$114.86
$118.00$116.00Jul 24$0.11$1.89$0.1117.18$117.89
$112.00$105.00Aug 14$0.44$6.56$0.4414.91$111.56
$115.00$113.00Aug 14$0.15$1.85$0.1512.33$114.85
$118.00$116.00Aug 14$0.16$1.84$0.1611.50$117.84

Bear call spreads & bull put spreads collecting premium. Receive credit upfront, profit if stock stays in range. 128 found (best R:R 23.32, avg 1.10)

BEAR CALL (5)
SellBuyExpiryCreditMax GainMax LossR:RBE
$111.00$120.00Jul 31$8.63$8.63$0.3723.32$119.63
$110.00$113.00Jul 24$2.82$2.82$0.1815.67$112.82
$110.00$115.00Aug 21$4.40$4.40$0.607.33$114.40
$118.00$119.00Jul 24$0.82$0.82$0.184.56$118.82
$106.00$107.00Jul 24$0.77$0.77$0.233.35$106.77
BULL PUT (5)
SellBuyExpiryCreditMax GainMax LossR:RBE
$129.00$127.00Jul 24$1.42$1.42$0.582.45$127.58
$131.00$130.00Aug 21$0.70$0.70$0.302.33$130.30
$128.00$127.00Aug 21$0.63$0.63$0.371.70$127.37
$127.00$126.00Aug 7$0.60$0.60$0.401.50$126.40
$129.00$128.00Aug 21$0.60$0.60$0.401.50$128.40

Same strike, different expirations. Sell near-term, buy far-term. Profits from time decay differential. 38 found (avg debit $0.87, cheapest $0.08)

CALLS (5)
StrikeNear ExpFar ExpNet DebitNear IVFar IV
$133.00Jul 24Jul 31$0.1845.4%28.9%
$136.00Jul 24Jul 31$0.2738.5%33.4%
$139.00Aug 21Aug 28$0.3734.2%33.7%
$132.00Jul 24Jul 31$0.4934.3%29.5%
$131.00Jul 24Jul 31$0.5733.1%28.7%
PUTS (5)
StrikeNear ExpFar ExpNet DebitNear IVFar IV
$118.00Jul 24Jul 31$0.0850.1%30.1%
$110.00Jul 24Jul 31$0.1462.7%48.2%
$105.00Aug 14Aug 28$0.1843.4%38.7%
$116.00Jul 24Jul 31$0.2247.8%36.8%
$115.00Jul 24Jul 31$0.2649.9%40.6%

Buy call + put at the same strike and expiry. Profits from large moves in either direction. 41 found (cheapest 2.19% of stock, avg 6.52%)

StrikeExpiryCall$Put$TotalBE LowBE HighCost%
$126.00Jul 24$1.54$1.23$2.77$123.23$128.772.19%
$127.00Jul 24$1.08$1.78$2.86$124.14$129.862.27%
$125.00Jul 24$2.15$0.83$2.98$122.02$127.982.36%
$124.00Jul 24$2.92$0.51$3.43$120.57$127.432.72%
$129.00Jul 24$0.47$3.20$3.67$125.33$132.672.91%
$123.00Jul 24$3.83$0.32$4.15$118.85$127.153.29%
$122.00Jul 24$4.15$0.20$4.35$117.65$126.353.45%
$130.00Jul 24$0.34$4.38$4.72$125.28$134.723.74%
$127.00Jul 31$2.12$2.71$4.83$122.17$131.833.83%
$126.00Jul 31$2.66$2.23$4.89$121.11$130.893.87%

Buy OTM call + OTM put at different strikes. Cheaper than straddles, needs bigger move to profit. 145 found (cheapest 0.32% of stock, avg 3.45%)

Call KPut KExpiryCall$Put$TotalBE LowBE High
$131.00$122.00Jul 24$0.20$0.20$0.40$121.60$131.40
$131.00$123.00Jul 24$0.20$0.32$0.52$122.48$131.52
$130.00$122.00Jul 24$0.34$0.20$0.54$121.46$130.54
$130.00$123.00Jul 24$0.34$0.32$0.66$122.34$130.66
$129.00$122.00Jul 24$0.47$0.20$0.67$121.33$129.67
$131.00$124.00Jul 24$0.20$0.51$0.71$123.29$131.71
$129.00$123.00Jul 24$0.47$0.32$0.79$122.21$129.79
$130.00$124.00Jul 24$0.34$0.51$0.85$123.15$130.85
$128.00$122.00Jul 24$0.72$0.20$0.92$121.08$128.92
$129.00$124.00Jul 24$0.47$0.51$0.98$123.02$129.98

Sell OTM put spread + OTM call spread. Collect premium, profit if stock stays between breakevens. 246 found (best R:R 13.29, avg credit $1.08)

Put SpreadCall SpreadExpiryCreditMax LossR:RBE LowBE High
117/119120/123Aug 28$2.79$0.2113.29$116.21$122.79
121/122129/130Aug 21$0.90$0.109.00$121.10$129.90
126/127128/129Aug 7$0.89$0.118.09$126.11$128.89
124/125131/132Aug 21$0.89$0.118.09$124.11$131.89
118/119124/125Jul 31$0.88$0.127.33$118.12$124.88
122/123125/126Jul 31$0.88$0.127.33$122.12$125.88
125/126128/129Jul 31$0.88$0.127.33$125.12$128.88
125/126127/128Aug 7$0.88$0.127.33$125.12$127.88
123/124126/127Aug 21$0.88$0.127.33$123.12$126.88
126/127128/129Jul 31$0.87$0.136.69$126.13$128.87

Buy lower + upper strikes, sell 2x middle strike. Low cost, max profit at the middle strike at expiry. 56 found (best R:R 19.00, cheapest $0.05)

CALLS (5)
LowMidHighExpiryDebitMax GainR:R
$135.00$136.00$137.00Jul 24$0.05$0.9519.00
$125.00$126.00$127.00Aug 7$0.06$0.9415.67
$130.00$131.00$132.00Aug 21$0.06$0.9415.67
$134.00$135.00$136.00Aug 21$0.06$0.9415.67
$135.00$136.00$137.00Aug 21$0.06$0.9415.67
PUTS (5)
LowMidHighExpiryDebitMax GainR:R
$122.00$123.00$124.00Jul 24$0.07$0.9313.29
$124.00$125.00$126.00Jul 24$0.08$0.9211.50
$122.00$123.00$124.00Aug 21$0.08$0.9211.50
$116.00$117.00$118.00Jul 31$0.09$0.9110.11
$123.00$124.00$125.00Jul 24$0.13$0.876.69

Buy 1 option, sell 2 at a different strike (1:2 ratio). Can be entered for a credit. Unlimited risk on naked leg. 75 found (best net $-0.58, 67 credits)

CALLS (5)
Buy KSell KRatioExpiryNetMax Gain
$137.00$150.001:2Jul 24-$0.58$12.42
$118.00$125.001:2Aug 7-$0.01$6.99
$145.00$150.001:2Aug 21-$0.04$4.96
$112.00$120.001:2Aug 14-$3.15$4.85
$136.00$140.001:2Aug 14-$0.35$3.65
PUTS (5)
Buy KSell KRatioExpiryNetMax Gain
$115.00$110.001:2Jul 24$0.00$5.00
$115.00$110.001:2Jul 31-$0.02$4.98
$115.00$110.001:2Aug 21-$0.06$4.94
$125.00$120.001:2Aug 28-$0.92$4.08
$110.00$106.001:2Jul 31-$0.14$3.86

Sell OTM calls against 100 shares you own. Collect premium for income, capped upside at strike. Yield% = premium/stock price. 50 found (best yield 3.45%, avg 1.28%)

StrikeExpiryBidDeltaOTM%Yield%If Called%VolOI
$127.00Aug 21$4.350.490.6%3.45%4.03%331.2K
$128.00Aug 21$4.200.461.4%3.33%4.70%2627
$127.00Aug 14$3.850.490.6%3.05%3.64%3630
$127.00Aug 7$3.500.490.6%2.77%3.36%7499
$129.00Aug 21$3.500.432.2%2.77%4.94%1067
$130.00Aug 21$3.400.403.0%2.69%5.65%1624.5K
$128.00Aug 7$3.000.451.4%2.38%3.75%3--
$131.00Aug 21$3.000.373.8%2.38%6.13%4752
$129.00Aug 7$2.730.412.2%2.16%4.33%1142
$132.00Aug 21$2.620.344.5%2.08%6.62%76

Current 5-Minute Volume Snapshots

Time (HH:MM) Total Volume Call Volume Put Volume Volume Change
Loading data...

Prior's 5-Minute Volume Snapshots

Time (HH:MM) Total Volume Call Volume Put Volume Volume Change
Loading data...

Current Put/Call Breakdown

Total Calls 9,519
Total Puts 3,560
Put/Call Ratio 0.37
Net Difference 5,959

Prior's Put/Call Breakdown

Total Calls 8,198
Total Puts 3,425
Put/Call Ratio 0.42
Net Difference 4,773

Prior 7-Day Put/Call Summary

Total Calls 105,380
Total Puts 34,688
Average Put/Call Ratio 0.38
Ratio Trend Falling

Daily Put/Call History (Last 7 Days)

Date Calls Puts Ratio Net Diff
Loading data...

Upcoming Earnings - 2 Weeks Prior

Loading earnings data...

Upcoming Earnings - 1 Week Prior

Loading earnings data...

Earnings This Week

Loading earnings data...

Earnings - Day Before / Day After

Loading earnings data...

Options Activity Around Earnings

Ticker Earnings Date Days Away Call Volume Put Volume IV Rank
Loading data...

Chart Title

Price — Past 7 Days

Add Card

CI/CD Results
App Log
Loading...
Requests
New Request
View All