By Ainvest
in
block-monitor
β
15 Aug 2025
π Block Monitor End-of-Day Trading Summary - 2025-08-15
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.
π Executive Summary
$305,599,735
Total Premium Value
1,051,624
Calls vs 748,537 Puts
Total Trades
209
Total Volume
1,800,161
Total Turnover
$305,599,735
π Top Tickers by Premium Value
#1 RDDT - $82,000,000 Total Premium π‘
π Volume Analysis
Total Volume: 20,000 contracts
Average Trade Size: 10000 contracts
Largest Trade: 10,000 contracts
Current Stock Price: $246.21
π° Premium Analysis
Total Premium: $82,000,000
Bullish Premium: $0
Bearish Premium: $0
β‘οΈ Neutral ($0)
π Sentiment Flow
Call/Put Ratio: 0.50 π‘
Buy/Sell Ratio: 0.00 π
OTM Volume: 20,000 contracts
π― Unusual Activity
Unusual Trades: 2
Large Premium Trades: 2
Peak Trading Hour: 14:00 ET
π₯ Top Trades by Premium
1. π UNKNOWN 10,000x $270 CALL 2027-01-15 (OTM) π¨
Premium: $70,000,000 | Price: $70.00
Time: 2025-08-15 14:11:58 ET
2. π UNKNOWN 10,000x $115 PUT 2027-01-15 (OTM) π¨
Premium: $12,000,000 | Price: $12.00
Time: 2025-08-15 14:11:58 ET
π Multi-Leg Strategies Detected
Strangle - Total Premium: $82,000,000
Time: 2025-08-15 14:11:58 ET
#2 NVDA - $54,664,256 Total Premium π’
π Volume Analysis
Total Volume: 258,276 contracts
Average Trade Size: 5381 contracts
Largest Trade: 15,000 contracts
Current Stock Price: $180.24
π° Premium Analysis
Total Premium: $54,664,256
Bullish Premium: $26,214,100
Bearish Premium: $28,398,556
π Bearish ($2,184,456)
π Sentiment Flow
Call/Put Ratio: 0.86 π’
Buy/Sell Ratio: 0.59 β‘οΈ
OTM Volume: 201,840 contracts
π― Unusual Activity
Unusual Trades: 19
Large Premium Trades: 16
Peak Trading Hour: 13:00 ET
π₯ Top Trades by Premium
1. π BUY 10,000x $180 PUT 2026-05-15 (ATM) π¨
Premium: $22,600,000 | Price: $22.60
Time: 2025-08-15 12:08:27 ET
2. π SELL 10,000x $180 PUT 2026-05-15 (ATM) π¨
Premium: $22,400,000 | Price: $22.40
Time: 2025-08-15 11:59:06 ET
3. π BUY 10,000x $182 CALL 2025-08-22 (ATM) π¨
Premium: $1,980,000 | Price: $1.98
Time: 2025-08-15 12:13:38 ET
π Multi-Leg Strategies Detected
Multi-Leg - Total Premium: $2,440,000
Time: 2025-08-15 12:13:38 ET
Multi-Leg - Total Premium: $2,340,000
Time: 2025-08-15 11:52:27 ET
#3 SPY - $44,155,289 Total Premium π΄
π Volume Analysis
Total Volume: 93,285 contracts
Average Trade Size: 2665 contracts
Largest Trade: 35,782 contracts
Current Stock Price: $644.10
π° Premium Analysis
Total Premium: $44,155,289
Bullish Premium: $16,715,878
Bearish Premium: $26,392,051
π Bearish ($9,676,173)
π Sentiment Flow
Call/Put Ratio: 0.11 π΄
Buy/Sell Ratio: 0.70 π
OTM Volume: 15,906 contracts
π― Unusual Activity
Unusual Trades: 11
Large Premium Trades: 13
Peak Trading Hour: 10:00 ET
π₯ Top Trades by Premium
1. π BUY 35,782x $635 PUT 2025-09-12 (ATM) π¨
Premium: $17,175,360 | Price: $4.80
Time: 2025-08-15 10:30:28 ET
2. π BUY 10,000x $640 CALL 2025-08-29 (ATM) π¨
Premium: $9,020,000 | Price: $9.02
Time: 2025-08-15 15:22:11 ET
3. π BUY 14,997x $640 PUT 2025-09-05 (ATM) π¨
Premium: $7,828,434 | Price: $5.22
Time: 2025-08-15 10:58:30 ET
π Multi-Leg Strategies Detected
Multi-Leg - Total Premium: $17,319,360
Time: 2025-08-15 10:30:28 ET
Multi-Leg - Total Premium: $13,090,000
Time: 2025-08-15 15:22:11 ET
#4 MSTR - $22,129,729 Total Premium π’
π Volume Analysis
Total Volume: 72,158 contracts
Average Trade Size: 3137 contracts
Largest Trade: 14,551 contracts
Current Stock Price: $361.95
π° Premium Analysis
Total Premium: $22,129,729
Bullish Premium: $0
Bearish Premium: $6,827,922
π Bearish ($6,827,922)
π Sentiment Flow
Call/Put Ratio: 1.00 π’
Buy/Sell Ratio: 0.00 π
OTM Volume: 72,049 contracts
π― Unusual Activity
Unusual Trades: 16
Large Premium Trades: 14
Peak Trading Hour: 13:00 ET
π₯ Top Trades by Premium
1. π UNKNOWN 14,551x $375 CALL 2025-08-22 (OTM) π¨
Premium: $10,098,394 | Price: $6.94
Time: 2025-08-15 13:03:06 ET
2. π UNKNOWN 14,551x $405 CALL 2025-08-22 (OTM) π¨
Premium: $2,779,241 | Price: $1.91
Time: 2025-08-15 13:03:06 ET
3. π SELL 4,000x $375 CALL 2025-08-22 (OTM) π¨
Premium: $2,700,000 | Price: $6.75
Time: 2025-08-15 13:06:13 ET
π Multi-Leg Strategies Detected
Multi-Leg - Total Premium: $12,877,635
Time: 2025-08-15 13:03:06 ET
Multi-Leg - Total Premium: $8,811,878
Time: 2025-08-15 13:06:13 ET
β’ SELL 4,000x
$375 CALL @ $6.75
β’ SELL 3,000x
$375 CALL @ $6.75
β’ UNKNOWN 4,000x
$405 CALL @ $1.87
β’ SELL 1,000x
$375 CALL @ $6.75
β’ SELL 1,000x
$375 CALL @ $6.75
β’ SELL 1,000x
$375 CALL @ $6.75
β’ UNKNOWN 3,000x
$405 CALL @ $1.87
β’ UNKNOWN 1,000x
$405 CALL @ $1.88
β’ UNKNOWN 1,000x
$405 CALL @ $1.88
β’ UNKNOWN 1,000x
$405 CALL @ $1.87
β’ UNKNOWN 218x
$375 CALL @ $6.87
β’ UNKNOWN 218x
$405 CALL @ $1.84
#5 XLF - $16,253,320 Total Premium π΄
π Volume Analysis
Total Volume: 100,430 contracts
Average Trade Size: 33477 contracts
Largest Trade: 50,000 contracts
Current Stock Price: $52.66
π° Premium Analysis
Total Premium: $16,253,320
Bullish Premium: $6,250,000
Bearish Premium: $53,320
π Bullish ($6,196,680)
π Sentiment Flow
Call/Put Ratio: 0.00 π΄
Buy/Sell Ratio: 0.01 π
OTM Volume: 100,430 contracts
π― Unusual Activity
Unusual Trades: 2
Large Premium Trades: 2
Peak Trading Hour: 11:00 ET
π₯ Top Trades by Premium
1. π UNKNOWN 50,000x $50 PUT 2026-06-18 (OTM) π¨
Premium: $9,950,000 | Price: $1.99
Time: 2025-08-15 11:11:56 ET
2. π SELL 50,000x $50 PUT 2026-01-16 (OTM) π¨
Premium: $6,250,000 | Price: $1.25
Time: 2025-08-15 11:11:56 ET
3. π BUY 430x $50 PUT 2026-01-16 (OTM)
Premium: $53,320 | Price: $1.24
Time: 2025-08-15 14:43:16 ET
π Multi-Leg Strategies Detected
Put Spread - Total Premium: $16,200,000
Time: 2025-08-15 11:11:56 ET
π¨ Most Unusual Trades of the Day
#1 T T 20250829 30.5 CALL π
BUY 10,000 contracts @ $0.07
Spot Price: $29.06
Strike: $30.50
Expiration: 2025-08-29
Premium Value: $70,000
Moneyness: OTM (-4.7%)
Unusual Factors: π₯ 500000.0% of OI
Time: 2025-08-15 13:24:23 ET
#2 MRVL MRVL 20250926 60 PUT π
UNKNOWN 11,165 contracts @ $0.83
Spot Price: $77.00
Strike: $60.00
Expiration: 2025-09-26
Premium Value: $926,695
Moneyness: OTM (28.3%)
Unusual Factors: π₯ 186083.3% of OI, π° Large Premium
Time: 2025-08-15 11:01:53 ET
#3 MRNA MRNA 20250822 31.5 CALL π
UNKNOWN 10,849 contracts @ $0.16
Spot Price: $28.34
Strike: $31.50
Expiration: 2025-08-22
Premium Value: $173,584
Moneyness: OTM (-10.0%)
Unusual Factors: π₯ 47169.6% of OI, π° Large Premium
Time: 2025-08-15 13:22:48 ET
#4 MRNA MRNA 20250822 31.5 CALL π
UNKNOWN 10,000 contracts @ $0.17
Spot Price: $28.32
Strike: $31.50
Expiration: 2025-08-22
Premium Value: $170,000
Moneyness: OTM (-10.1%)
Unusual Factors: π₯ 43478.3% of OI, π° Large Premium
Time: 2025-08-15 13:16:08 ET
#5 GLD GLD 20250912 330 CALL π
SELL 52,362 contracts @ $0.39
Spot Price: $307.56
Strike: $330.00
Expiration: 2025-09-12
Premium Value: $2,042,118
Moneyness: OTM (-6.8%)
Unusual Factors: π₯ 30621.1% of OI, π° Large Premium
Time: 2025-08-15 10:47:11 ET
#6 MRNA MRNA 20250822 31.5 CALL π
UNKNOWN 6,000 contracts @ $0.14
Spot Price: $28.17
Strike: $31.50
Expiration: 2025-08-22
Premium Value: $84,000
Moneyness: OTM (-10.6%)
Unusual Factors: π₯ 26087.0% of OI
Time: 2025-08-15 14:39:39 ET
#7 IEF IEF 20251219 92 PUT π
SELL 20,000 contracts @ $0.36
Spot Price: $95.29
Strike: $92.00
Expiration: 2025-12-19
Premium Value: $720,000
Moneyness: OTM (3.6%)
Unusual Factors: π₯ 24691.4% of OI, π° Large Premium
Time: 2025-08-15 11:52:48 ET
#8 MRNA MRNA 20250822 31.5 CALL π
UNKNOWN 4,999 contracts @ $0.15
Spot Price: $28.27
Strike: $31.50
Expiration: 2025-08-22
Premium Value: $74,985
Moneyness: OTM (-10.3%)
Unusual Factors: π₯ 21734.8% of OI
Time: 2025-08-15 14:06:52 ET
#9 ITB ITB 20250822 102 PUT π
UNKNOWN 10,000 contracts @ $0.10
Spot Price: $109.29
Strike: $102.00
Expiration: 2025-08-22
Premium Value: $100,000
Moneyness: OTM (7.1%)
Unusual Factors: π₯ 16949.2% of OI
Time: 2025-08-15 11:29:36 ET
#10 HYG HYG 20250926 80.5 CALL π
BUY 10,000 contracts @ $0.35
Spot Price: $80.41
Strike: $80.50
Expiration: 2025-09-26
Premium Value: $350,000
Moneyness: ATM (-0.1%)
Unusual Factors: π₯ 16949.2% of OI, π° Large Premium
Time: 2025-08-15 10:16:34 ET
π Multi-Leg Strategy Analysis
HYG Strategies:
Multi-Leg
Complex strategy with multiple option legs
Profits when: Depends on specific leg combination
π Market Bias: Neutral-Bullish
View: Put selling suggests range-bound or bullish
Volatility Bet: Low volatility
π Put-Selling Strategy: Put selling suggests bullish sentiment or income generation. Strikes: $79, $79
Strategy Legs (Total Premium: $2,225,000):
β’ UNKNOWN 20,000x
$79 PUT @ $0.89
β’ UNKNOWN 5,000x
$79 PUT @ $0.89
SPY Strategies:
Multi-Leg
Complex strategy with multiple option legs
Profits when: Depends on specific leg combination
π Market Bias: Bearish
View: Put-heavy buying suggests downside expectation
Volatility Bet: Medium volatility
π Put-Heavy Strategy: More put buying suggests bearish sentiment. Multiple strikes: $635, $635
Strategy Legs (Total Premium: $17,319,360):
β’ BUY 35,782x
$635 PUT @ $4.80
β’ BUY 300x
$635 PUT @ $4.80
Put Spread
Bearish strategy betting on moderate downside
Profits when: Stock falls below the short put strike
π Market Bias: Bearish
View: Expecting moderate decline to $620
Volatility Bet: Low-Medium volatility bet
π Bear Put Spread: Betting on stock falling from $643.53 toward $620. Max profit if stock closes below $620 at expiration.
Strategy Legs (Total Premium: $10,557,888):
β’ BUY 14,997x
$640 PUT @ $5.22
β’ SELL 14,997x
$620 PUT @ $1.82
IBIT Strategies:
Multi-Leg
Complex strategy with multiple option legs
Profits when: Depends on specific leg combination
π Market Bias: Bullish
View: Call-heavy buying suggests upside expectation
Volatility Bet: Medium volatility
π Call-Heavy Strategy: More call buying suggests bullish sentiment. Multiple strikes: $67, $67, $75
Strategy Legs (Total Premium: $880,000):
β’ BUY 13,200x
$67 CALL @ $0.32
β’ BUY 8,800x
$67 CALL @ $0.32
β’ BUY 13,200x
$75 CALL @ $0.08
β’ BUY 8,800x
$75 CALL @ $0.08
RDDT Strategies:
Strangle
Volatility play with wider profit range than straddle
Profits when: Stock moves significantly beyond either strike
π― Market Bias: Range-Bound
View: Expecting stock to stay between $115-$270
Volatility Bet: LOW volatility bet
π― Short Strangle: Betting stock stays between $115 and $270. Profits from time decay.
Strategy Legs (Total Premium: $82,000,000):
β’ UNKNOWN 10,000x
$270 CALL @ $70.00
β’ UNKNOWN 10,000x
$115 PUT @ $12.00
NVDA Strategies:
Multi-Leg
Complex strategy with multiple option legs
Profits when: Depends on specific leg combination
π Market Bias: Bullish
View: Call-heavy buying suggests upside expectation
Volatility Bet: Medium volatility
π Call-Heavy Strategy: More call buying suggests bullish sentiment. Multiple strikes: $182, $185, $190
Call Spread
Bullish strategy betting on moderate upside
Profits when: Stock rises above the short call strike
π Market Bias: Bearish
View: Expecting stock to stay below $182
Volatility Bet: Low volatility bet
π Bear Call Spread: Betting stock stays below $182. Max profit if stock closes below $182 at expiration.
Strategy Legs (Total Premium: $600,000):
β’ SELL 2,400x
$182 CALL @ $2.07
β’ BUY 2,400x
$190 CALL @ $0.43
π Market Sentiment Analysis
Overall Market Direction:
$68,792,509
Bullish Premium
$70,396,167
Bearish Premium
Key Insights:
Most Bullish Flow: IBIT (call/put ratio: 1.00)
Most Bearish Flow: XLF (call/put ratio: 0.00)
Total Unusual Volume Trades: 173 (high volume relative to OI)
Total Large Premium Trades: 105 (>$100k premium value)
π How Retail Investors Can Use This Data
π 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
π― Support/Resistance Research
High volume strikes may act as magnets
Multiple institutions trading same strikes = potential levels
Combine with technical analysis for confluence
π Sector Rotation Insights
Which sectors are getting institutional attention?
Compare activity across different industries
Look for shifts in institutional focus over time
π Education & Strategy Learning
Study how professionals structure trades
Learn about different options strategies
Understand risk management techniques
β οΈ 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.
π― Key Takeaways for Retail Traders
π
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
π₯ High Unusual Activity: Multiple trades with volume exceeding 10% of OI suggest institutional positioning for research
π° Large Premium Trades: Significant capital deployment indicates strong institutional conviction - study the context
π Most Bullish Flow: IBIT - research why institutions are positioning bullishly
π Most Bearish Flow: XLF - understand the bearish sentiment drivers
Remember: Use this data as ONE piece of your research puzzle, not as standalone trading signals!