🛍COST Bear Put Fortress - $21.5M Defensive Wall Before Earnings! (2025-09-28)
Massive $21.5M institutional bet detected on COST. Someone just dropped $21.5M on Costco put protection this afternoon! Four massive trades hit the tape at 14:31:22, with the biggest being an $11M bet on the October 10th $1020 puts. With COST trading Unusual activity score: high/10. Detailed breakdo
📅 September 29, 2025 | 🔥 Unusual Activity Detected
🎯 The Quick Take
Someone just dropped $21.5M on Costco put protection this afternoon! Four massive trades hit the tape at 14:31:22, with the biggest being an $11M bet on the October 10th $1020 puts. With COST trading at $909.77 and earnings looming, institutional money is building a defensive wall against potential downside. Translation: Smart money is getting nervous about Costco's premium valuation!
📊 Company Overview
Costco Wholesale Corporation (COST) operates membership-based warehouse clubs with:
- Market Cap: $406 Billion
- Industry: Retail-Variety Stores
- Primary Business: Membership-based, no-frills retail model predicated on offering a select product assortment in bulk quantities at bargain prices
💰 The Option Flow Breakdown
📊 The Tape (September 29, 2025 @ 14:31:22)
| Time | Symbol | Side | Buy/Sell | Type | Expiration | Premium | Strike | Volume | OI | Size | Spot | Option Price |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 14:31:22 | COST | MID | BUY | PUT | 2025-10-10 | $11M | $1,020 | 1K | 205 | 1,000 | $909.77 | $110.50 |
| 14:31:22 | COST | MID | BUY | PUT | 2025-10-17 | $3.8M | $1,100 | 200 | 21 | 200 | $909.77 | $190.80 |
| 14:31:22 | COST | MID | BUY | PUT | 2025-10-03 | $3.7M | $990 | 450 | 44 | 450 | $909.77 | $81.25 |
| 14:31:22 | COST | MID | SELL | PUT | 2025-10-17 | $3M | $1,030 | 253 | 26 | 250 | $909.77 | $119.35 |
🤓 What This Actually Means
Real talk: This isn't your neighbor Bob trading on Robinhood! This is institutional-sized defensive positioning with surgical precision:
- $11M on October 10th $1020 puts - Betting on/hedging against a move above $1020 (12% upside)
- Mixed put spread activity - Both buying and selling suggests complex hedging strategies
- Near-term focus - All expiries within 3 weeks, targeting immediate catalyst risks
- Strike selection - All strikes ABOVE current price ($909.77) = protecting long positions
Unusual Score: EXTREME! 🔥 3050x average size - This happens maybe once a year!
📈 Technical Setup / Chart Analysis
YTD Performance Chart
Costco's having a relatively flat year with +0.54% YTD return, significantly lagging the broader market. After peaking above $1000 in March, COST has been range-bound between $900-$950.
Key observations:
- Current Price: $914.75 (near middle of recent range)
- YTD Return: +0.54% (underperforming S&P 500)
- Max Drawdown: -17.29% from highs
- Volatility: 22.9% - moderate for a mega-cap retailer
Gamma-Based Support & Resistance Analysis
Current Price: $913.92
The gamma landscape reveals critical levels that explain today's massive put buying:
- 🔴 Major Resistance: $920-$925 zone with heavy call gamma building
- 🔵 Key Support: $910 level showing strongest put gamma concentration
- 🟠 Upper Resistance: $950-$960 creating a ceiling for rallies
- 🔵 Deep Support: $900 acting as major floor with significant put interest
Translation for us regular folks: Options activity shows heavy interest protecting the $910 level, with sellers ready to cap any rally above $920. The massive put buying today reinforces these defensive levels!
🎪 Catalysts
Upcoming Events
Q1 2026 Earnings - December 2025
- Next major catalyst after recent Q4 2025 report
- Focus on membership fee increase impact - first hike in 7 years
- 35 new warehouse openings planned for fiscal 2026
International Expansion
- 10 international locations in pipeline
- European fulfillment center in Spain launching
- New markets in Sweden and United Kingdom
Recently Completed
Q4 2025 Earnings (September 2025)
- Beat expectations: EPS $5.87 vs $5.80 estimate
- Revenue $86.2B slightly above consensus
- Membership fee income surged 14% to $1.72B
- Renewal rates dipped slightly to 92.3% US/Canada
Membership Fee Increase (September 2024)
- Gold Star: $60 → $65, Executive: $120 → $130
- Affecting 52 million memberships
- Projected to generate $5.3B in 2025 (+10%)
🎲 Price Targets & Probabilities
Based on gamma levels and institutional positioning:
🚀 Bull Case (20% chance)
Target: $950-$960
- Break above $920 gamma resistance
- Strong holiday sales surprise
- International expansion exceeds expectations
- Target aligns with upper gamma resistance at $950-$960
😐 Base Case (60% chance)
Target: $900-$920 range
- Stays within current gamma bands
- Continues range-bound trading pattern
- Membership growth offsets margin pressures
- Gravitates toward high gamma zone at $910
😰 Bear Case (20% chance)
Target: $870-$900
- Tests major support at $900 gamma floor
- Valuation concerns at 50x earnings trigger selloff
- Tariff impacts on imported goods hit margins
- Renewal rate decline accelerates
💡 Trading Ideas
🛡️ Conservative: Income Generation
Play: Sell cash-secured puts below support
Sell $900 puts (Oct 17) for ~$15 premium
Risk: Assignment at $900 (1.2% below current)
Reward: $1,500 per contract if expires worthless
Why this works: Strong gamma support at $900, collect premium from elevated IV
⚖️ Balanced: Put Spread for Protection
Play: Buy $920/$900 put spread (Oct 17)
Buy $920 puts, sell $900 puts
Risk: $8 per spread cost
Reward: $20 max gain if below $900
Why this works: Defined risk hedge matching institutional positioning
🚀 Aggressive: Volatility Crush Play
Play: Sell $910 straddle (Oct 3 - this week!)
Sell $910 calls and $910 puts
Risk: Unlimited if big move
Reward: ~$45 premium collected
Why this works: Massive gamma pin at $910, volatility likely to compress
⚠️ Risk Factors
Let's keep it real - here's what could go wrong:
- Premium valuation: Trading at 50x earnings - Charlie Munger warned about 40x!
- Renewal rate concerns: Dropped to 92.3% from higher levels
- Tariff threats: Potential impact on imported goods margins
- Competition: Sam's Club and BJ's expanding aggressively
- Market saturation: Limited room for US expansion
- Consumer spending: Inflation pressures on discretionary purchases
🎯 The Bottom Line
Here's the deal: Today's $21.5M in put buying isn't panic - it's calculated institutional hedging ahead of uncertainty. With COST trading at nosebleed valuations (50x earnings!) and sitting near resistance, smart money is buying insurance.
If you own COST: Consider taking some profits or buying protective puts - institutions are
If you're watching: Wait for a pullback toward $900 gamma support for better entry
If you're bearish: The put activity validates concerns, but don't fight the $910 gamma pin
Mark your calendar: October 3rd and 10th expirations will release gamma pressure - expect movement after these dates! Watch for any membership renewal updates as the key metric going forward.
Disclaimer: Options trading involves substantial risk. This analysis is for educational purposes only and not financial advice. Past performance doesn't guarantee future results. Always do your own research!
About Costco: Costco operates a membership-based, no-frills retail model predicated on offering a select product assortment in bulk quantities at bargain prices with a $406B market cap in the retail-variety stores sector.