Screening stocks below both their 50-day and 200-day averages
Recorded in cvforge on July 24, 2026 by ConvexValue · Published July 25, 2026
A stock screener for names trading under both moving averages at once, with a market-cap floor to keep microcaps out of the list.
Exact prompt
Create a scanner that shows all stocks currently trading below their 50dma and 200dma. Lets include a filter for market cap - default larger than 100M.
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, implied_volatility, delta, strike_price, expiration_date, fair_market_value
How to read it
Worth noting this build does not touch the option chain at all — it is a plain equity screen, which the same data surface supports. Being under both averages is a weak, well-known condition, and the market-cap filter is doing most of the work in making the output usable: without it the list fills with names too small to trade.
Two averages rather than one is the point. Below the 50-day is noise; below both is a longer signal, and the gap between the two averages tells you how long the condition has held.
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.
- Screens rank what is in the snapshot at the moment they run. Re-running later in the session gives a different shortlist.
Related demos
- Ranking underlyings by put volume, absolute and relative
- Scanning for stocks with more call volume than put volume
- A sortable put/call volume table across underlyings
Search focus: stocks below 50 and 200 day moving average screener. Related: below 200 dma stock screener, moving average screener with market cap filter. Originally posted on X.