stocktools
Premium seller // OST covered calls & cash-secured puts

OST covered call calculator

No chain came back for OST right now — the calculator below works with your own inputs, and nothing is estimated for you.

Premium collected$150.001 contract × $1.50 × 100
Return if flat1.50%19.9% annualized · stock unchanged at expiry
Return if called6.50%115.2% annualized · called away at $105.00
Breakeven$98.50cost basis minus premium
Downside cushion1.50%premium as % of stock price
Max profit$650.00capped at the $105.00 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: OST max pain & open interest · OST workspace · earnings calendar · the plain calculator

OST covered call FAQ

What does the OST covered call calculator prefill?

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

How is a OST covered call return calculated?

Premium collected divided by your OST 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.