GBX covered call calculator
Prefilled from GBX’s delayed chain: a near-30-delta contract at the mid, 253 days out. Adjust anything — the arithmetic updates live.
Prefilled from GBX’s delayed chain (as of Aug 6, 3:39 AM ET) — a near-30-delta call at the mid. Every field is editable; check live quotes before acting on anything.
Annualized figures compound the period return over 365 days and assume repeatability, which real markets do not promise. Assignment can happen early; dividends and fees are not modeled. Educational arithmetic, not a recommendation.
Context before writing anything: GBX max pain & open interest · GBX workspace · earnings calendar · the plain calculator
GBX covered call FAQ
What does the GBX covered call calculator prefill?
A near-30-delta GBX call (and put, for the cash-secured mode) at the bid/ask midpoint from the delayed Cboe chain, plus GBX's delayed price and the days to that expiration. Every field stays editable.
How is a GBX covered call return calculated?
Premium collected divided by your GBX cost basis gives the return if flat; the capital gain up to the strike plus premium gives the return if called. Both are annualized over the days to expiration for comparison.
Is this live data?
The prefill uses delayed (~15 minute) quotes, labeled with their as-of time. Check live quotes at your broker before trading; this page is educational arithmetic, not a recommendation.