A bounded SPCX view turned into a bounded structure
Recorded in cvforge on June 23, 2026 by ConvexValue · Published July 25, 2026
Four constraints in one prompt — a floor, a target, a tolerable downside and a capped upside — and the structure that matches all of them.
Exact prompt
I think $SPCX wont fall much below 140 and that it will recover to 250 by EOY. In case it does fall below 140 I am willing to be exposed to 125 but not lower. In case it rallies I want to be exposed to 250 but less so or not at all above 250.
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
fair_market_value, strike_price, expiration_date, contract_type, delta, implied_volatility, open_interest, day_volume
How to read it
This is the most fully specified view in the cluster: where the prompt thinks the stock will not go, where it will go, how much downside is acceptable, and where upside stops mattering. Each clause removes structures from consideration, which is why the answer is narrow.
The lesson is that a vague view produces a vague answer. Naming the levels — even approximately — is what lets the build choose strikes rather than present a menu, and it is the difference between “find me a trade” and something you could actually place.
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.
- Rankings are arithmetic on Massive fair market value estimates, not advice. FMV is not an executable price, and nothing here accounts for your account, margin, assignment risk or taxes.
- Multi-leg structures are valued leg by leg using FMV estimates. cvforge has no option quote or last-trade data with which to model fills or transaction costs.
Related demos
- Expressing an 18-month HOOD view efficiently
- MRVL to 500, but not through 200: sizing a two-sided view
- A SPY straddle held for all of 2025
Search focus: options structure for a bounded view. Related: define risk limits options trade, structure trade with floor and cap. Originally posted on X.