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

BST covered call calculator

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

Stock price (your cost)StrikePremium (per share)Days to expirationContracts

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

BST covered call FAQ

What does the BST covered call calculator prefill?

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

How is a BST covered call return calculated?

Premium collected divided by your BST 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.