Volume versus open interest · Demo

Volume/OI against absolute delta for the top 50 contracts

Recorded in cvforge on June 13, 2026 by ConvexValue · Published July 25, 2026

The ratio on one axis and absolute delta on the other, for the busiest contracts market-wide, with row-count controls and index and ETF options excluded by default.

Exact prompt

Give me a chart with volume/OI on the y-axis, and absolute delta on the X axis. Display the top 50 options by volume/oi on the chart (let me also choose top 100/250/500) Exclude index and top-ETF options by default - give me a toggle to include. Give me inputs to filter by max/min volume and OI.

Data cadence

Live U.S. option snapshots, refreshed through the session. Open interest is an end-of-previous-day figure and updates once daily.

Plan requirements

Runs on the free cvforge app and the free data tier (20 requests/hour). No card needed.

Fields used

day_volume, open_interest, strike_price, expiration_date, contract_type, implied_volatility, delta

How to read it

Plotting the ratio against delta separates two things that get conflated. A high ratio at 0.5 delta is activity close to the money; the same ratio at 0.05 delta is a far-out-of-the-money contract that had almost no open interest to begin with, so a modest volume produces a huge ratio.

That second case is the main false positive in any volume/OI screen, and this chart makes it visible instead of leaving it in a table. The default exclusion of index and ETF options is the other necessary filter — without it the top of the list is always the same handful of names.

Change it

The prompt is the interface. Ask for a different ticker, a different expiration window, or an extra column in the same sentence style and the agent edits the app in place — you do not start over, and you do not wait for anyone to build it.

Limitations

  • Snapshot data, not a transaction tape: the build reads the chain as it stands, so it cannot attribute a trade to a buyer or a seller.
  • Open interest updates once a day, so an intraday volume/OI comparison is always this session’s volume against yesterday’s open interest.
  • Contract coverage is U.S. listed equities, ETFs and indices. Indices use the I: prefix, for example I:SPX.
  • Current per-contract valuation is Massive fair market value (FMV), a proprietary estimate. cvforge does not provide option bids, asks, midpoint, quote sizes, NBBO or last trades, and FMV is not an executable quote.
  • A high ratio says positions were opened, not which direction anyone expects. Read it as an attention signal, not a forecast.

Related demos

Search focus: volume open interest ratio vs delta chart. Related: top 50 options by volume oi, volume oi ratio scatter chart. Originally posted on X.