Option Yield Calculator
Yield from selling a cash-secured put at three levels below spot, from listed market prices, plus the 1-month T-bill earned on the cash.
| Prices appear here after you press Get prices. |
How it's calculated
- Each level uses the listed put strike closest to spot × (1 − level). Price is the market mid or bid, less your fee per contract ÷ 100.
- Premium p.a. = net premium ÷ strike × 365 ÷ calendar days to expiry (simple, not compounded).
- Total p.a. adds the 1-month T-bill, which you earn only if the cash securing the put sits in T-bills or a money-market fund.
- Breakeven = strike − net premium. Below it, assignment loses money versus the premium kept.
- Rows marked last trade have no live bid/ask (usually outside US market hours). The last trade may be hours or days old.
- US equity options are American-style and can be assigned before expiry.
- You buy 100 shares at spot and sell one call per 100 shares. Each level uses the listed call strike closest to spot × (1 + level). Price is the market mid or bid, less your fee per contract ÷ 100.
- Premium p.a. = net premium ÷ spot × 365 ÷ calendar days to expiry (simple, not compounded). This is what you earn if the stock ends exactly unchanged.
- If called p.a. = (strike − spot + net premium) ÷ spot × 365 ÷ days: your maximum return, earned if the stock is at or above the strike at expiry and the shares are called away.
- Breakeven = spot − net premium. Below it you lose money; the premium only cushions the fall.
- Dividends are not included. They add to your return, but a call can be exercised early just before an ex-dividend date.
- Rows marked last trade have no live bid/ask (usually outside US market hours). The last trade may be hours or days old.