COST institutional options flow analysis — multi-leg block trades, dominant direction, and gamma analysis from the public options tape for September 26, 2025. Articles older than 60 days are public; a free account reads back to 30 days, Pro to 5, and AIme Premium reads today's unusual options trades with no delay.

COST Unusual Options Activity — 2025-09-26

Institutional flow on 2025-09-26

Multi-leg block trades, dominant direction, and gamma analysis

$0.0M0 trades

Trade Details

Full Analysis

🛒 COST Options Analysis: Big Money Bets on Costco's Pullback

September 26, 2025 | Unusual Options Activity Alert


🏢 Company Overview

Costco Wholesale Corp (COST) 📊 Market Cap: $418.3 Billion 🛍️ Sector: Retail (Variety Stores) 💼 Employees: 333,000

Costco operates a membership-based warehouse club model, offering bulk products at low prices through a frugal cost structure. With over 600 warehouses in the US and 280 internationally, Costco dominates the warehouse club industry with over 60% market share. Think of it as the place where you go to buy 48 rolls of toilet paper and somehow leave with a kayak and a year's supply of almonds. 🎯


🚨 Unusual Options Activity Detected

Today's tape lit up with some serious put buying activity. Let me break down exactly what happened at 13:55:40:

📋 Options Flow Detail (September 26, 2025)

TimeSymbolBuy/SellTypeExpirationPremiumStrikeVolumeOISizeSpot PriceOption PriceOption Symbol
13:55:40COSTBUYPUT2025-10-17$5.1M$1,05038458380$917.64$134COST20251017P1050
13:55:40COSTBUYPUT2025-10-17$4.6M$1,10025021250$917.64$183.8COST20251017P1100
13:55:40COSTBUYPUT2025-10-17$979K$1,05570770$917.64$139.8COST20251017P1055
13:55:40COSTBUYPUT2025-10-17$863K$1,06060860$917.64$143.9COST20251017P1060

Total Premium Spent: $11.5 Million 💰

🎯 What This Means in Plain English

Someone (or multiple someones) just dropped $11.5 million betting that COST will fall below these strike prices by October 17th. Here's the kicker - all these strikes are WAY above the current price of $917.64:

  • The $1,050 strike is 14.4% above current price
  • The $1,100 strike is 19.9% above current price

Wait, that doesn't make sense, right? Let me explain what's really happening here...

These are likely protective puts - basically expensive insurance policies. Big institutions who own millions of dollars worth of COST stock are buying protection in case the stock drops. They're not necessarily betting on a crash, they're just making sure their portfolios don't get crushed if one happens.

Unusual Score: 8.5/10 🔥 (Based on the $5.1M single premium trade relative to typical daily flow)


📊 Technical Analysis

Year-to-Date Performance

COST YTD Chart

Looking at the YTD chart, COST tells an interesting story:

  • YTD Return: +0.85% (basically flat)
  • Current Price: $917.59
  • Starting Price: $909.81
  • Peak: ~$1,050 (March 2025)
  • Max Drawdown: -17.3% from peak

The stock had a strong run early in the year, peaking around $1,050 in March, but has been in a steady downtrend since. We're now sitting near the lows of the year. Volume has been picking up recently, suggesting increased interest (both bulls and bears are battling it out).

🎯 Gamma Levels & Key Support/Resistance

COST Gamma Chart

Let me translate the gamma chart into something useful. Think of these levels as magnets for the stock price:

Key Support Levels (Where buying might come in):

  • $917.50 - Immediate support (strongest gamma level) 🛡️
  • $915.00 - Secondary support
  • $910.00 - Major support floor
  • $900.00 - Psychological level & gamma support

Key Resistance Levels (Where selling pressure builds):

  • $920.00 - Immediate resistance (massive gamma wall) 🧱
  • $925.00 - Next resistance
  • $930.00 - Breaking above here changes the game
  • $940.00 - Major resistance zone

The gamma chart shows we're currently stuck between $917.50 support and $920 resistance - a super tight range. The blue put gamma below suggests strong support, while the red call gamma above creates resistance. We're basically in a pressure cooker here. 🍲


📰 Catalyst Research & Upcoming Events

✅ Recently Completed

  • Q4 2025 Earnings (Sept 25): Beat on EPS ($5.87 vs $5.81 expected), Revenue up 8% YoY ^1
  • Membership Fee Increase (Sept 2024): First hike in 7 years, adding ~$290M to income ^2

🔜 Upcoming Catalysts

Near Term (Next 30 Days):

  • Holiday Sales Preview - Early October data releases
  • October Comparable Sales - Due first week of November
  • Tariff Policy Updates - Ongoing monitoring of 25% Canada/Mexico tariffs ^3

Medium Term (Q4 2025 - Q1 2026):

  • 35 New Store Openings planned for fiscal 2026 ^4
  • China Expansion - Continued growth from 7 current locations ^5
  • Japan Target - Aiming for 60 warehouses by 2030 (currently 37) ^6
  • Digital Growth - E-commerce growing 13.6% YoY ^7

⚠️ Risk Factors

  • Valuation Concerns: Trading at 47-53x forward earnings (expensive!) ^8
  • Tariff Pressures: Potential margin squeeze from import tariffs ^9
  • Consumer Spending: Management noted weakening demand for discretionary items ^10

🎯 Price Targets & Probabilities

Based on gamma levels and technical analysis:

🐂 Bull Case: $940-950

  • Probability: 25%
  • Catalyst: Strong holiday sales, tariff relief, membership growth surprises
  • Timeline: 2-3 months

📊 Base Case: $915-925

  • Probability: 50%
  • Catalyst: Steady execution, inline comps, range-bound trading
  • Timeline: Next 30 days

🐻 Bear Case: $900-910

  • Probability: 25%
  • Catalyst: Tariff implementation, consumer slowdown, valuation reset
  • Timeline: If breaks $915 support

💡 Trading Ideas

🛡️ Conservative Play: Cash-Secured Put

Sell COST Oct 18 $910 Put @ $3.50

  • Collect $350 premium per contract
  • Break-even: $906.50
  • Win if COST stays above $910 (current support)
  • Risk: Owning COST at $910 if assigned

⚖️ Balanced Strategy: Put Spread

Buy COST Nov 15 $920 Put @ $12.00 Sell COST Nov 15 $900 Put @ $4.50

  • Net Cost: $750 per spread
  • Max Profit: $1,250 (if COST at/below $900)
  • Break-even: $912.50
  • Good risk/reward for bearish view

🚀 Aggressive Play: Call Calendar Spread

Sell COST Oct 18 $925 Call @ $3.20 Buy COST Nov 15 $925 Call @ $8.50

  • Net Cost: $530 per spread
  • Profits from time decay if COST stays near $925
  • Benefits if volatility increases after Oct expiration
  • Max profit at $925 at October expiration

🎬 Bottom Line

Look, someone just spent $11.5 million on put protection - that's not pocket change. But before you panic, remember these are way out-of-the-money puts that are likely portfolio insurance from big funds.

The stock is sitting right at a critical support level ($917.50) after already falling 17% from its March highs. The gamma setup suggests we're coiled for a move - either a bounce off support toward $930, or a breakdown toward $900.

My Take: The heavy put buying combined with stretched valuation (50x earnings is rich for retail) suggests caution. But COST is a quality company with solid fundamentals. I'd wait for either:

  1. A break below $915 to get bearish
  2. A bounce above $925 to get bullish
  3. Or sell puts at $900-910 to collect premium while we wait

Remember: This is a marathon stock, not a sprint. Don't bet the farm on short-term moves. The institutions buying those puts aren't betting on disaster - they're just being careful. You should be too. 💪


Disclaimer: This analysis is for educational purposes only. Always do your own research and manage your risk. Options trading involves substantial risk of loss.


Data Sources:

  • Options flow data from tape analysis
  • Gamma levels from GEX calculations
  • Price data from market feeds
  • Company information from Polygon.io API
  • Catalyst research from cited sources

The Options Desk tracks the move options price into every US earnings report the week of Sep 7, next to how much each stock has actually moved on its past prints — plus the SPY, QQQ and IWM expected ranges and the gamma walls that box them in.