Calculator
Static payoff math for one set of inputs. Answers "what would this pay." No sequence, no decisions.
Free options simulator
Find out what a covered call does in a bad market — tonight.
You cannot practice a downturn while the market is going up, and you cannot practice anything at 9pm on a Sunday. This simulator runs on generated price paths and lets you choose the market conditions, so the downturn you want to understand is available whenever you sit down — not whenever the market decides to supply one.
What makes this a simulator
Not a calculator, not a backtester
A calculator tells you what a trade would pay at expiration. A backtester replays history with no one at the controls. This is neither. You sell the call, the path unfolds without telling you where it is going, and you decide what happens at each event — the same position a real seller is in.
Backtester
Automated replay of history. Answers "what did this return." The outcome is already fixed before you start.
Simulator
A path you have not seen, decisions you make as it goes, and a matched buy-and-hold running alongside for comparison.
One run proves nothing
A single path is a single outcome, and reading a strategy off one outcome is exactly how people talk themselves into things. Pick a scenario — calm bull, strong bull, choppy, bear market, crash — and run the same settings repeatedly. Watch how often the covered call wins, how often it loses, and by how much in each direction. Every run inside a scenario is still randomly generated, so you see a spread of outcomes rather than one anecdote.
What the lab tracks
Premium collected, assignment events, shares called away, realized share profit or loss, forgone upside, total account equity, and the matched buy-and-hold result for the same path.
Important limitations
The lab uses simulated price paths and simplified educational assumptions. It does not use a live option chain and does not model every feature of real trading, including taxes, slippage, commissions, dividends, or all early-assignment scenarios.
This simulator uses simulated prices and simulated money. It is provided for education only and is not personalized investment, tax, or trading advice. Options involve risk. A covered call can cap upside while leaving substantial stock downside in place.
Go further
Covered Call Risk Research
Five paired-path Monte Carlo experiments on volatility, delta, holding period, and market regime.
Read the study →CSP & Wheel Lab
The other side of the trade: sell a cash-secured put, handle assignment, and continue into covered calls.
Open the CSP/Wheel Lab →Five Questions PDF
A short checklist for evaluating covered-call ETFs beyond their distribution yield.
Open the PDF →COMMUNITY DISCUSSION
Questions, comments, and simulation results
Have a question or suggestion? Leave it below. You can also describe what happened in one of your covered-call simulation runs.
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