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Premium seller // COST covered calls & cash-secured puts

COST covered call calculator

Prefilled from COST’s delayed chain: a near-30-delta contract at the mid, 71 days out. Adjust anything — the arithmetic updates live.

Prefilled from COST’s delayed chain (as of Aug 6, 3:57 AM ET) — a near-30-delta call at the mid. Every field is editable; check live quotes before acting on anything.

Premium collected$2,160.001 contract × $21.60 × 100
Return if flat2.27%12.3% annualized · stock unchanged at expiry
Return if called7.52%45.2% annualized · called away at $1,000.00
Breakeven$928.55cost basis minus premium
Downside cushion2.27%premium as % of stock price
Max profit$7,144.66capped at the $1,000.00 strike

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: COST max pain & open interest · COST workspace · earnings calendar · the plain calculator

COST covered call FAQ

What does the COST covered call calculator prefill?

A near-30-delta COST call (and put, for the cash-secured mode) at the bid/ask midpoint from the delayed Cboe chain, plus COST's delayed price and the days to that expiration. Every field stays editable.

How is a COST covered call return calculated?

Premium collected divided by your COST 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.