📉 Transaction Analytics / OI & Volume for Smile – Allasso Help Center

OI and Volume Smile for TTF Sep/Oct-25

📝 Description

The Smile OI/Volume Chart provides a snapshot of market engagement across strike prices for a specific expiry. By plotting Open Interest (OI) and Volume side-by-side for each strike, it offers powerful insights into where traders are most active, hedged, or speculating.

This chart is designed to visualise current market positioning across the entire volatility smile — i.e., all available strikes for a given expiration date. It allows users to assess:

Where the liquidity is concentrated
Which strikes are actively traded or built up
Potential support/resistance zones based on positioning

Key Use Cases:

Identify high-liquidity strikes for execution planning.
Detect unusual activity (e.g., volume spikes at illiquid wings).
Map speculative interest vs hedging behavior.
Guide structure design around volume clusters or OI peaks.

🎛️ Interactive Controls

Trade Leg - Select the expiry or structure leg to inspect (e.g., Sep-25, Oct-25).
Settlement Date - Defines the observation point in time for the chart.

📌 Chart Components

Main Plot - Strike-by-Strike OI/Volume

Gray Filled Area: Cumulative Open Interest (per strike).

Cyan Bars: Daily Volume (per strike).

X-Axis: Strike prices for selected expiry.

Y-Axis (Left): Open Interest (k lots) — total contracts held at each strike.

Y-Axis (Right): Daily Volume (k lots) — contracts traded at each strike on that day.

Timeline & Mini-map (Bottom)

Zoom Control - Drag to isolate specific time windows
Mini Map - Full range of OI and Volume for strikes

📚 Data Sources

Open Interest (OI) and Volume: Aggregated from end-of-day exchange reports.
Strike Metadata: Pulled from listed option chains on the selected expiry date.

🧩 Interpretation Tips

High OI + High Volume: Indicates deep institutional positioning — strikes with real capital behind them.
High Volume, Low OI: Suggests short-term speculation, possibly intraday flow.
Isolated OI Spikes: Could signal custom trades or legacy hedges.
Volume Clusters Around Spot: Often indicative of active hedging zones or gamma activity.
Peaks at Wings: May reveal tail-risk hedging or speculative bets on extreme moves.