Tour v452
CSGP
COSTAR GROUP INC
$31.03 +6.36%
(7/27 18:00) ◀
|
Tuesday, July 28, 2026 (2:05pm)
January 2026
|
▶ (7/28 18:01)
◀ 7/28 14:05 ▶

Option Volume

Detail
ℹ
Current (07/28 2:05pm) 1,964
Calls: 1,519 (77%)
Puts: 445 (23%)
Prior (07/27) 3,748
Calls: 1,962 (52%)
Puts: 1,786 (48%)
Current vs Prior -47.60%
Calls: -22.58% (Calls)
Puts: -75.08% (Puts)
Prior 7-Day Total 11,528
Calls: 8,346 (72%)
Puts: 3,182 (28%)
Prior 7-Day Average 2,305
Calls: 1,192 (72%)
Puts: 454 (28%)
Current vs Prior 7-Day Avg -14.82%
Calls: +27.40%
Puts: -2.11%
Sentiment BULLISH

Dollar Volume

Detail
ℹ
Current (07/28 2:05pm) $439.5K
Calls: $353.8K (80%)
Puts: $85.7K (20%)
Prior (07/27) $691.3K
Calls: $419.8K (61%)
Puts: $271.5K (39%)
Current vs Prior -36.42%
Calls: -15.73%
Puts: -68.42%
Prior 7-Day Total $2.90M
Calls: $2.10M (72%)
Puts: $797.9K (28%)
Prior 7-Day Average $579.5K
Calls: $299.9K (72%)
Puts: $114.0K (28%)
Current vs Prior 7-Day Avg -24.15%
Calls: +17.95%
Puts: -24.77%
Sentiment BULLISH

Put/Call Ratio

Detail
ℹ
Current (07/28 2:05pm) 0.29
Prior (07/27) 0.91
Current vs Prior -67.82%
Prior 7-Day Average 0.46
Current vs Prior 7-Day Avg -36.86%
Sentiment BULLISH

Open Interest

Detail
ℹ
Current (07/28 2:05pm) 57,614
Calls: 40,297 (70%)
Puts: 17,317 (30%)
Prior (07/27) 55,208
Calls: 39,190 (71%)
Puts: 16,018 (29%)
Current vs Prior +4.36%
Prior 7-Day Total 288,776
Calls: 222,559 (77%)
Puts: 66,217 (23%)
Prior 7-Day Average 57,755
Calls: 44,511 (77%)
Puts: 13,243 (23%)
Current vs Prior 7-Day Avg -0.24%
Sentiment BEARISH

Expected Move

Detail
ℹ
Expiry (08/21) | Next (09/18)
Current 15.89% | 19.88%
Prior 13.60% | 18.76%
Current vs Prior +16.83% | +5.97%
Prior 7-Day Avg 16.48% | 20.62%
Current vs 7-Day Avg -3.58% | -3.58%
Prior 7-Day Eod 13.60% | 18.76%
Current vs 7-Day Eod +16.83% | +5.97%
Sentiment BEARISH

Relative Spread

Detail
ℹ
Expiry | Next
Current 5.11% | 5.74%
Calls: 4.95% | 5.41%
Puts: 5.26% | 6.07%
Prior 7.55% | 8.38%
Calls: 9.23% | 7.06%
Puts: 5.88% | 9.69%
Current vs Prior -32.32% | -31.50%
Prior 7-Day Avg 10.52% | 9.55%
Calls: 10.36% | 10.84%
Puts: 10.67% | 8.26%
Current vs 7-Day Avg -51.40% | -39.90%
Liquidity Pricy
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🤖 AI Insights

Strong bullish conviction with 80% of dollar volume in calls ($353.8K) vs puts ($85.7K). Below-average activity with volume down 48% vs prior. Extreme bullish P/C ratio of 0.29 - heavy call buying (1,519 calls vs 445 puts). P/C ratio dropping 68% - sentiment shifting bullish.

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 NEUTRAL
7-Day Avg NEUTRAL
Current BULLISH
Prior NEUTRAL
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 4 of results (avg 5.2%, best 4.6%)

CALLS (2)
StrikeExpiryBidAskMarkSpreadVolDeltaOI
$35.00Aug 211.051.10$1.084.6%1050.30762
$30.00Aug 212.953.10$3.035.0%700.61496
PUTS (2)
StrikeExpiryBidAskMarkSpreadVolDeltaOI
$30.00Aug 211.851.95$1.905.3%1920.392.0K
$35.00Aug 214.805.10$4.956.1%30.69217

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

No options available for this category

In-the-money options with delta >0.50. Higher probability of profit, lower leverage. 3 found (avg delta 0.72, highest 0.87)

CALLS (2)
StrikeExpiryBidAskMarkSpreadVolDeltaOI
$25.00Aug 216.307.10$6.7011.9%--0.87245
$30.00Aug 212.953.10$3.035.0%700.61496
PUTS (1)
StrikeExpiryBidAskMarkSpreadVolDeltaOI
$35.00Aug 214.805.10$4.956.1%30.69217

Most actively traded options today. High liquidity = easy entry/exit. 7 active (total vol 563, top 192)

CALLS (3)
StrikeExpiryBidAskMarkSpreadVolDeltaOI
$35.00Aug 211.051.10$1.084.6%1050.30762
$30.00Aug 212.953.10$3.035.0%700.61496
$40.00Aug 210.250.40$0.3345.5%380.122.0K
PUTS (4)
StrikeExpiryBidAskMarkSpreadVolDeltaOI
$30.00Aug 211.851.95$1.905.3%1920.392.0K
$25.00Aug 210.400.55$0.4831.3%1030.132.2K
$22.50Aug 210.100.25$0.1883.3%520.06254
$35.00Aug 214.805.10$4.956.1%30.69217

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

No setups found for this strategy

Bull call spreads & bear put spreads with the best risk/reward ratios. Pay a debit upfront, defined max loss. 5 found (best R:R 7.33, avg 3.54)

BULL CALL (2)
BuySellExpiryDebitMax GainMax LossR:RBE
$35.00$40.00Aug 21$0.75$4.25$0.755.67$35.75
$30.00$35.00Aug 21$1.95$3.05$1.951.56$31.95
BEAR PUT (3)
BuySellExpiryDebitMax GainMax LossR:RBE
$25.00$22.50Aug 21$0.30$2.20$0.307.33$24.70
$30.00$25.00Aug 21$1.42$3.58$1.422.52$28.58
$35.00$30.00Aug 21$3.05$1.95$3.050.64$31.95

Bear call spreads & bull put spreads collecting premium. Receive credit upfront, profit if stock stays in range. 6 found (best R:R 2.76, avg 0.95)

BEAR CALL (3)
SellBuyExpiryCreditMax GainMax LossR:RBE
$25.00$30.00Aug 21$3.67$3.67$1.332.76$28.67
$30.00$35.00Aug 21$1.95$1.95$3.050.64$31.95
$35.00$40.00Aug 21$0.75$0.75$4.250.18$35.75
BULL PUT (3)
SellBuyExpiryCreditMax GainMax LossR:RBE
$35.00$30.00Aug 21$3.05$3.05$1.951.56$31.95
$30.00$25.00Aug 21$1.42$1.42$3.580.40$28.58
$25.00$22.50Aug 21$0.30$0.30$2.200.14$24.70

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

No setups found for this strategy

Buy call + put at the same strike and expiry. Profits from large moves in either direction. 3 found (cheapest 15.89% of stock, avg 19.49%)

StrikeExpiryCall$Put$TotalBE LowBE HighCost%
$30.00Aug 21$3.03$1.90$4.93$25.07$34.9315.89%
$35.00Aug 21$1.08$4.95$6.03$28.97$41.0319.43%
$25.00Aug 21$6.70$0.48$7.18$17.82$32.1823.14%

Buy OTM call + OTM put at different strikes. Cheaper than straddles, needs bigger move to profit. 6 found (cheapest 1.64% of stock, avg 5.02%)

Call KPut KExpiryCall$Put$TotalBE LowBE High
$40.00$22.50Aug 21$0.33$0.18$0.51$21.99$40.51
$40.00$25.00Aug 21$0.33$0.48$0.81$24.19$40.81
$35.00$22.50Aug 21$1.08$0.18$1.26$21.24$36.26
$35.00$25.00Aug 21$1.08$0.48$1.56$23.44$36.56
$40.00$30.00Aug 21$0.33$1.90$2.23$27.77$42.23
$35.00$30.00Aug 21$1.08$1.90$2.98$27.02$37.98

Sell OTM put spread + OTM call spread. Collect premium, profit if stock stays between breakevens. 3 found (best R:R 0.82, avg credit $1.82)

Put SpreadCall SpreadExpiryCreditMax LossR:RBE LowBE High
22/2530/35Aug 21$2.25$2.750.82$22.75$32.25
25/3035/40Aug 21$2.17$2.830.77$27.83$37.17
22/2535/40Aug 21$1.05$3.950.27$23.95$36.05

Buy lower + upper strikes, sell 2x middle strike. Low cost, max profit at the middle strike at expiry. 3 found (best R:R 3.17, cheapest $1.20)

CALLS (2)
LowMidHighExpiryDebitMax GainR:R
$30.00$35.00$40.00Aug 21$1.20$3.803.17
$25.00$30.00$35.00Aug 21$1.72$3.281.91
PUTS (1)
LowMidHighExpiryDebitMax GainR:R
$25.00$30.00$35.00Aug 21$1.63$3.372.07

Buy 1 option, sell 2 at a different strike (1:2 ratio). Can be entered for a credit. Unlimited risk on naked leg. 6 found (best net $0.42, -- credits)

CALLS (3)
Buy KSell KRatioExpiryNetMax Gain
$35.00$40.001:2Aug 21$0.42$4.58
$25.00$30.001:2Aug 21$0.64$4.36
$30.00$35.001:2Aug 21$0.87$4.13
PUTS (3)
Buy KSell KRatioExpiryNetMax Gain
$30.00$25.001:2Aug 21$0.94$4.06
$35.00$30.001:2Aug 21$1.15$3.85
$25.00$22.501:2Aug 21$0.12$2.38

Sell OTM calls against 100 shares you own. Collect premium for income, capped upside at strike. Yield% = premium/stock price. 2 found (best yield 3.38%, avg 2.09%)

StrikeExpiryBidDeltaOTM%Yield%If Called%VolOI
$35.00Aug 21$1.050.3012.8%3.38%16.18%105762
$40.00Aug 21$0.250.1228.9%0.81%29.71%382.0K

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 1,519
Total Puts 445
Put/Call Ratio 0.29
Net Difference 1,074

Prior's Put/Call Breakdown

Total Calls 1,962
Total Puts 1,786
Put/Call Ratio 0.91
Net Difference 176

Prior 7-Day Put/Call Summary

Total Calls 8,346
Total Puts 3,182
Average Put/Call Ratio 0.46
Ratio Trend Falling

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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Chart Title

Price — Past 7 Days

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