🔍 Block Monitor End-of-Day Trading Summary - 2025-08-21
Daily block monitor analysis featuring institutional trading activity and market movements. Educational content for investment research purposes only.
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End-of-Day Trading Summary: This report analyzes COMPLETED trades from the previous trading session. This is historical institutional options flow data and should not be used for real-time trading decisions.
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Investment Disclaimer: This report is for informational and educational purposes only and does not constitute investment advice. Past institutional activity does not predict future moves. Options trading involves significant risk of loss. Please consult with a financial advisor before making investment decisions.
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How to Read This Report: This analysis shows unusual options activity, including large trades, multi-leg strategies, and potential market sentiment signals. High volume relative to open interest often indicates significant institutional activity. Use this data for market research and educational purposes, not as trading signals.
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For Retail Investors: Use this data to understand market sentiment, identify institutional attention on specific stocks/sectors, research potential support/resistance levels, and learn about professional options strategies. Do NOT copy trades blindly - context and timing matter significantly.
📊 Executive Summary
30
Tickers Analyzed
$273,647,894
Total Premium Value
128
Unusual Trades
676,563
Calls vs 783,446 Puts
Total Trades
135
Total Volume
1,460,009
Total Turnover
$273,647,894
🏆 Top Tickers by Premium Value
#1 NVDA - $142,769,990 Total Premium 🟢
📊 Volume Analysis
Total Volume: 187,398 contracts
Average Trade Size: 26771 contracts
Largest Trade: 50,000 contracts
Current Stock Price: $174.05
💰 Premium Analysis
Total Premium: $142,769,990
Bullish Premium: $0
Bearish Premium: $469,990
📉 Bearish ($469,990)
📈 Sentiment Flow
Call/Put Ratio: 0.90 🟢
Buy/Sell Ratio: 0.22 📉
OTM Volume: 87,398 contracts
🎯 Unusual Activity
Unusual Trades: 7
Large Premium Trades: 4
Peak Trading Hour: 13:00 ET
🔥 Top Trades by Premium
1. 📉 UNKNOWN 50,000x $160 CALL 2025-09-19 (ITM) 🚨
Premium: $91,450,000 | Price: $18.29
Time: 2025-08-21 13:25:08 ET
Premium: $91,450,000 | Price: $18.29
Time: 2025-08-21 13:25:08 ET
2. 📉 UNKNOWN 50,000x $172 CALL 2025-09-19 (ATM) 🚨
Premium: $50,850,000 | Price: $10.17
Time: 2025-08-21 13:25:08 ET
Premium: $50,850,000 | Price: $10.17
Time: 2025-08-21 13:25:08 ET
3. 📉 SELL 16,500x $182 CALL 2025-08-22 (OTM) 🚨
Premium: $165,000 | Price: $0.10
Time: 2025-08-21 13:41:57 ET
Premium: $165,000 | Price: $0.10
Time: 2025-08-21 13:41:57 ET
🎭 Multi-Leg Strategies Detected
#2 HOOD - $23,658,537 Total Premium 🟡
📊 Volume Analysis
Total Volume: 21,557 contracts
Average Trade Size: 1960 contracts
Largest Trade: 10,000 contracts
Current Stock Price: $106.50
💰 Premium Analysis
Total Premium: $23,658,537
Bullish Premium: $0
Bearish Premium: $40,600
📉 Bearish ($40,600)
📈 Sentiment Flow
Call/Put Ratio: 0.53 🟡
Buy/Sell Ratio: 1.00 📈
OTM Volume: 11,400 contracts
🎯 Unusual Activity
Unusual Trades: 4
Large Premium Trades: 4
Peak Trading Hour: 13:00 ET
🔥 Top Trades by Premium
1. 📉 UNKNOWN 10,000x $125 PUT 2025-09-19 (ITM) 🚨
Premium: $20,480,000 | Price: $20.48
Time: 2025-08-21 10:07:49 ET
Premium: $20,480,000 | Price: $20.48
Time: 2025-08-21 10:07:49 ET
2. 📉 UNKNOWN 10,000x $125 CALL 2025-09-19 (OTM) 🚨
Premium: $2,480,000 | Price: $2.48
Time: 2025-08-21 10:07:49 ET
Premium: $2,480,000 | Price: $2.48
Time: 2025-08-21 10:07:49 ET
3. 📉 UNKNOWN 1,000x $125 CALL 2025-09-19 (OTM) 🚨
Premium: $273,000 | Price: $2.73
Time: 2025-08-21 10:57:46 ET
Premium: $273,000 | Price: $2.73
Time: 2025-08-21 10:57:46 ET
🎭 Multi-Leg Strategies Detected
Straddle - Total Premium: $22,960,000
Time: 2025-08-21 10:07:49 ET
Time: 2025-08-21 10:07:49 ET
#3 AAPL - $18,890,950 Total Premium 🔴
📊 Volume Analysis
Total Volume: 12,510 contracts
Average Trade Size: 6255 contracts
Largest Trade: 11,660 contracts
Current Stock Price: $224.85
💰 Premium Analysis
Total Premium: $18,890,950
Bullish Premium: $17,606,600
Bearish Premium: $0
📈 Bullish ($17,606,600)
📈 Sentiment Flow
Call/Put Ratio: 0.00 🔴
Buy/Sell Ratio: 0.00 📉
OTM Volume: 0 contracts
🎯 Unusual Activity
Unusual Trades: 2
Large Premium Trades: 2
Peak Trading Hour: 15:00 ET
🔥 Top Trades by Premium
🎭 Multi-Leg Strategies Detected
#4 AMZN - $17,436,350 Total Premium 🔴
📊 Volume Analysis
Total Volume: 13,410 contracts
Average Trade Size: 6705 contracts
Largest Trade: 10,060 contracts
Current Stock Price: $221.87
💰 Premium Analysis
Total Premium: $17,436,350
Bullish Premium: $13,078,000
Bearish Premium: $0
📈 Bullish ($13,078,000)
📈 Sentiment Flow
Call/Put Ratio: 0.00 🔴
Buy/Sell Ratio: 0.00 📉
OTM Volume: 0 contracts
🎯 Unusual Activity
Unusual Trades: 2
Large Premium Trades: 2
Peak Trading Hour: 15:00 ET
🔥 Top Trades by Premium
🎭 Multi-Leg Strategies Detected
#5 PDD - $15,543,240 Total Premium 🟢
📊 Volume Analysis
Total Volume: 31,424 contracts
Average Trade Size: 1366 contracts
Largest Trade: 10,000 contracts
Current Stock Price: $121.01
💰 Premium Analysis
Total Premium: $15,543,240
Bullish Premium: $14,886,805
Bearish Premium: $238,050
📈 Bullish ($14,648,755)
📈 Sentiment Flow
Call/Put Ratio: 1.00 🟢
Buy/Sell Ratio: 0.98 📈
OTM Volume: 31,376 contracts
🎯 Unusual Activity
Unusual Trades: 5
Large Premium Trades: 6
Peak Trading Hour: 10:00 ET
🔥 Top Trades by Premium
1. 📈 BUY 10,000x $125 CALL 2025-09-26 (OTM) 🚨
Premium: $4,900,000 | Price: $4.90
Time: 2025-08-21 09:54:22 ET
Premium: $4,900,000 | Price: $4.90
Time: 2025-08-21 09:54:22 ET
2. 📈 BUY 4,998x $125 CALL 2025-09-26 (OTM) 🚨
Premium: $2,499,000 | Price: $5.00
Time: 2025-08-21 10:06:28 ET
Premium: $2,499,000 | Price: $5.00
Time: 2025-08-21 10:06:28 ET
3. 📈 BUY 5,000x $125 CALL 2025-09-26 (OTM) 🚨
Premium: $2,450,000 | Price: $4.90
Time: 2025-08-21 09:54:22 ET
Premium: $2,450,000 | Price: $4.90
Time: 2025-08-21 09:54:22 ET
🎭 Multi-Leg Strategies Detected
🚨 Most Unusual Trades of the Day
#1 CZR CZR 20251017 21 PUT 📉
UNKNOWN 24,855 contracts @ $0.43
Spot Price: $24.95
Strike: $21.00
Expiration: 2025-10-17
Premium Value: $1,068,765
Moneyness: OTM (18.8%)
Unusual Factors: 🔥 248550.0% of OI, 💰 Large Premium
Time: 2025-08-21 10:15:08 ET
#2 CZR CZR 20251017 21 PUT 📉
UNKNOWN 24,855 contracts @ $0.23
Spot Price: $24.96
Strike: $21.00
Expiration: 2025-10-17
Premium Value: $571,665
Moneyness: OTM (18.9%)
Unusual Factors: 🔥 248550.0% of OI, 💰 Large Premium
Time: 2025-08-21 10:22:25 ET
#3 SMR SMR 20250829 30.5 PUT 📉
UNKNOWN 18,156 contracts @ $0.60
Spot Price: $34.12
Strike: $30.50
Expiration: 2025-08-29
Premium Value: $1,089,360
Moneyness: OTM (11.9%)
Unusual Factors: 🔥 151300.0% of OI, 💰 Large Premium
Time: 2025-08-21 10:33:29 ET
#4 IWM IWM 20250828 236 CALL 📉
UNKNOWN 13,000 contracts @ $0.23
Spot Price: $225.31
Strike: $236.00
Expiration: 2025-08-28
Premium Value: $299,000
Moneyness: OTM (-4.5%)
Unusual Factors: 🔥 72222.2% of OI, 💰 Large Premium
Time: 2025-08-21 12:50:30 ET
#5 SHY SHY 20250919 82 PUT 📈
BUY 29,999 contracts @ $0.10
Spot Price: $82.67
Strike: $82.00
Expiration: 2025-09-19
Premium Value: $299,990
Moneyness: ATM (0.8%)
Unusual Factors: 🔥 14285.2% of OI, 💰 Large Premium
Time: 2025-08-21 11:54:22 ET
#6 NVDA NVDA 20250912 100 PUT 📈
BUY 19,000 contracts @ $0.05
Spot Price: $174.92
Strike: $100.00
Expiration: 2025-09-12
Premium Value: $95,000
Moneyness: OTM (74.9%)
Unusual Factors: 🔥 13380.3% of OI
Time: 2025-08-21 14:06:12 ET
#7 NVDA NVDA 20250919 160 CALL 📉
UNKNOWN 50,000 contracts @ $18.29
Spot Price: $174.05
Strike: $160.00
Expiration: 2025-09-19
Premium Value: $91,450,000
Moneyness: ITM (8.8%)
Unusual Factors: 🔥 37.6% of OI, 💰 Large Premium
Time: 2025-08-21 13:25:08 ET
#8 NVDA NVDA 20250919 172.5 CALL 📉
UNKNOWN 50,000 contracts @ $10.17
Spot Price: $173.99
Strike: $172.50
Expiration: 2025-09-19
Premium Value: $50,850,000
Moneyness: ATM (0.9%)
Unusual Factors: 🔥 1867.8% of OI, 💰 Large Premium
Time: 2025-08-21 13:25:08 ET
#9 HYG HYG 20251017 78 PUT 📉
UNKNOWN 110,000 contracts @ $0.23
Spot Price: $80.28
Strike: $78.00
Expiration: 2025-10-17
Premium Value: $2,530,000
Moneyness: OTM (2.9%)
Unusual Factors: 🔥 74.3% of OI, 💰 Large Premium
Time: 2025-08-21 09:42:25 ET
#10 SHY SHY 20250919 82 PUT 📉
UNKNOWN 14,063 contracts @ $0.08
Spot Price: $82.69
Strike: $82.00
Expiration: 2025-09-19
Premium Value: $112,504
Moneyness: ATM (0.8%)
Unusual Factors: 🔥 6696.7% of OI, 💰 Large Premium
Time: 2025-08-21 09:59:33 ET
🎭 Multi-Leg Strategy Analysis
KWEB Strategies:
Strangle
Volatility play with wider profit range than straddle
Profits when: Stock moves significantly beyond either strike
🎯 Market Bias: Range-Bound
View: Expecting stock to stay between $35-$40
Volatility Bet: LOW volatility bet
🎯 Short Strangle: Betting stock stays between $35 and $40. Profits from time decay.
View: Expecting stock to stay between $35-$40
Volatility Bet: LOW volatility bet
🎯 Short Strangle: Betting stock stays between $35 and $40. Profits from time decay.
AMZN Strategies:
Put Spread
Bearish strategy betting on moderate downside
Profits when: Stock falls below the short put strike
📉 Market Bias: Neutral-Bearish
View: Directional put play
Volatility Bet: Medium volatility
🔄 Complex Put Strategy: Mixed positioning with strikes at $235 and $235
View: Directional put play
Volatility Bet: Medium volatility
🔄 Complex Put Strategy: Mixed positioning with strikes at $235 and $235
AAPL Strategies:
Put Spread
Bearish strategy betting on moderate downside
Profits when: Stock falls below the short put strike
📉 Market Bias: Neutral-Bearish
View: Directional put play
Volatility Bet: Medium volatility
🔄 Complex Put Strategy: Mixed positioning with strikes at $240 and $240
View: Directional put play
Volatility Bet: Medium volatility
🔄 Complex Put Strategy: Mixed positioning with strikes at $240 and $240
CRWV Strategies:
Call Spread
Bullish strategy betting on moderate upside
Profits when: Stock rises above the short call strike
📈 Market Bias: Neutral-Bullish
View: Directional call play
Volatility Bet: Medium volatility
🔄 Complex Call Strategy: Mixed positioning with strikes at $165 and $165
View: Directional call play
Volatility Bet: Medium volatility
🔄 Complex Call Strategy: Mixed positioning with strikes at $165 and $165
HYG Strategies:
Call Spread
Bullish strategy betting on moderate upside
Profits when: Stock rises above the short call strike
📈 Market Bias: Neutral-Bullish
View: Directional call play
Volatility Bet: Medium volatility
🔄 Complex Call Strategy: Mixed positioning with strikes at $81 and $81
View: Directional call play
Volatility Bet: Medium volatility
🔄 Complex Call Strategy: Mixed positioning with strikes at $81 and $81
Multi-Leg
Complex strategy with multiple option legs
Profits when: Depends on specific leg combination
📈 Market Bias: Neutral-Bullish
View: Put selling suggests range-bound or bullish
Volatility Bet: Low volatility
📈 Put-Selling Strategy: Put selling suggests bullish sentiment or income generation. Strikes: $77, $78
View: Put selling suggests range-bound or bullish
Volatility Bet: Low volatility
📈 Put-Selling Strategy: Put selling suggests bullish sentiment or income generation. Strikes: $77, $78
📊 Market Sentiment Analysis
Overall Market Direction:
$54,908,976
Bullish Premium
$10,143,776
Bearish Premium
📈 Bullish
$44,765,200
Key Insights:
📚 How Retail Investors Can Use This Data
📊 Market Sentiment Analysis
- Heavy call buying = potential bullish sentiment
- Large put activity = potential hedging or bearish sentiment
- Use to gauge institutional mood, not as buy/sell signals
🎯 Support/Resistance Research
- High volume strikes may act as magnets
- Multiple institutions trading same strikes = potential levels
- Combine with technical analysis for confluence
🔄 Sector Rotation Insights
- Which sectors are getting institutional attention?
- Compare activity across different industries
- Look for shifts in institutional focus over time
📖 Education & Strategy Learning
- Study how professionals structure trades
- Learn about different options strategies
- Understand risk management techniques
⚠️ Critical Reminder
This is historical data for learning, not real-time trading signals!
Always do your own research and consult a financial advisor before making investment decisions.
🎯 Key Takeaways for Retail Traders
📅 Data Timing & Usage Guidelines
End-of-Day Analysis: This report summarizes completed trades from the previous trading session
Best Use: Market research, sentiment analysis, and educational purposes
Not For: Real-time trading decisions or copy trading strategies
🔥 High Unusual Activity: Multiple trades with volume exceeding 10% of OI suggest institutional positioning for research
💰 Large Premium Trades: Significant capital deployment indicates strong institutional conviction - study the context
📈 Most Bullish Flow: PDD - research why institutions are positioning bullishly
📉 Most Bearish Flow: AMZN - understand the bearish sentiment drivers
Remember: Use this data as ONE piece of your research puzzle, not as standalone trading signals!