What is an Option Volume Overlay?
An option volume overlay is a visualization tool that displays the trading volume distribution of call and put options across different strike prices. By stacking call volume (green) and put volume (red) in a bar chart, traders can quickly identify the most actively traded strike prices, gauge market sentiment, and spot areas of high liquidity. This information is invaluable for options traders who need to understand where the market is concentrating its activity.
How to Use This Option Volume Overlay
- 1
Enter a Stock Ticker
Type any U.S.-listed stock or ETF symbol (e.g., AAPL, SPY, TSLA) and click "Load Chain" to fetch the option chain data.
- 2
Select an Expiration Date
Choose from available expiration dates to view volume distribution for that specific expiry. The chart updates instantly.
- 3
Analyze the Volume Distribution
Green bars represent call option volume, red bars represent put option volume. The tallest bars indicate the most actively traded strikes. Hover over any bar for detailed volume breakdowns.
- 4
Identify Most Active Strikes
The top active strikes are highlighted with a bold border. Use these to identify key support/resistance levels implied by options activity.
Why Use Our Option Volume Overlay?
Real-Time Volume Data
Volume data is fetched from live option chain snapshots, reflecting actual market conditions throughout the trading day.
Call vs Put Breakdown
Instantly see the ratio of call to put volume at each strike price to gauge bullish or bearish sentiment.
Active Strike Detection
Automatically highlights the most actively traded strikes so you can quickly focus on key liquidity zones.
Understanding Options Volume Distribution
Options volume distribution reveals where market participants are placing their bets. High call volume at a specific strike price suggests bullish expectations, while high put volume indicates bearish sentiment or hedging activity. When both call and put volumes are elevated at the same strike, it often signals a key price level that the market expects to be significant — potentially acting as support or resistance.
The put/call volume ratio at individual strikes can provide additional insight. A ratio above 1.0 (more puts than calls) at a strike near the current stock price may indicate protective hedging or bearish positioning. Conversely, a ratio below 1.0 suggests bullish positioning. Traders often use this information alongside open interest data and implied volatility to build a comprehensive view of market expectations.
Volume spikes at out-of-the-money strikes can signal speculative activity or institutional hedging. For example, unusually high put volume at strikes well below the current price might indicate institutional portfolio protection, while high call volume at strikes above the current price could suggest speculative bullish bets or covered call writing.