⚡ Covered Call Playbook
→Sell calls with 30–45 DTE against shares you already own
→Choose strikes above your cost basis to protect embedded gains
→Roll up and out if the stock rallies through your strike and you want to keep shares
→Reinvest collected premium to lower your effective cost basis over time
→Be cautious selling calls right before earnings if you don't want early-assignment risk
→Best suited to flat-to-slightly-bullish, moderate-IV environments
What Is a Covered Call?
A covered call is an income strategy for shares you already own: you sell a call option against your existing stock position, collecting premium in exchange for capping your upside at the strike price. If the stock stays below the strike through expiration, you keep both your shares and the premium. If it closes above the strike, your shares are typically called away (sold) at that price — you keep the premium plus any gain up to the strike, but miss out on further upside.
It's best suited to a flat-to-modestly-bullish outlook on a stock you're comfortable holding or selling at your chosen strike, and is one of the more conservative ways to generate income from an existing portfolio.
Worked Example
Using the calculator's default inputs
100 shares of SPY with a $580 cost basis, currently trading at $580, selling the $590 call for $3.20 with 45 days to expiration:
- Premium collected: $320 (1 contract × $3.20 × 100 shares)
- Breakeven on the shares, accounting for premium: $576.80 ($580 cost basis − $3.20 premium)
- Max profit if called away: $1,320 — the $10 gain to the $590 strike ($1,000) plus the $320 premium
- Downside cushion: the $320 premium offsets the first $3.20 of decline in the stock before you're at a net loss
Frequently Asked Questions
What happens to my shares if the stock closes above the strike price?
They're typically called away (sold) at the strike price if the option is exercised — you keep the premium and any gain up to the strike, but the shares are gone unless you buy them back or roll the call before expiration.
Why sell calls against stock instead of just holding it?
The premium generates income and provides a small cushion against a price decline, at the cost of capping your upside if the stock rallies hard through your strike.
How do I pick a strike for a covered call?
Strikes above your cost basis protect your existing gain if shares are called away. Further OTM strikes collect less premium but leave more room for the stock to appreciate before you cap out.
What's the risk of early assignment?
American-style equity options can be exercised any time before expiration, most commonly right before an ex-dividend date if the call is in the money — a real but generally low-probability risk to be aware of.