The wheel runs two premium-selling trades in a loop. You sell cash-secured puts on a stock you are willing to own; if you are assigned, you own the shares and sell covered calls against them; if the shares are called away, you start again. This screener shows the candidate put, the premium, and what the position looks like if assignment actually happens.
Step one is a cash-secured put on a stock you would be content to own, with the collateral set aside. If the stock stays above the strike the put expires worthless and you repeat. If it falls below, you are assigned 100 shares at the strike, with your effective cost reduced by every premium collected so far.
Step two is a covered call against those shares. If the stock recovers through the call strike the shares are called away, you keep the premium and the gain to the strike, and the loop restarts from step one.
Where it breaks is the part usually left out: assignment in a stock that keeps falling. You now hold shares at a loss, and the calls you can sell against them are either far out of the money and nearly worthless, or close enough to lock in that loss if assigned. The wheel does not fail noisily — it stalls, with capital tied up in a position you would not open today.
Every description of the wheel says "only run it on stocks you want to own", and it is the one rule that does all the work. The strategy converts a stock position into income, so it inherits whatever was wrong with the stock choice. A rich premium is usually the market pricing the risk of exactly the decline that would trap you.
That is why the assignment scenario is shown on each candidate rather than tucked into a footnote. The question is not whether the premium looks good, it is whether owning 100 shares at that strike is a position you would accept on purpose.
Enough to buy 100 shares at the strike, per contract, because the put is cash-secured. A $50 strike ties up $5,000. That is the real constraint on which stocks are available to you, and it is why the screener shows collateral alongside premium.
You hold shares at a loss and the covered calls you can write against them pay very little unless you are willing to sell below your cost. This is the main failure mode of the strategy and it is a slow one — the position does not blow up, it ties up capital indefinitely.
It produces income reliably while the underlying behaves. It does not produce income reliably through a sustained decline, and no premium-selling strategy does. Treating it as a yield product rather than as a stock position with an income overlay is the most common mistake made with it.