Selling options: who does it, why, and the risks
When you sell an option, you take the other side. You collect the premium up front, and in return you take on the obligation. Time is on your side, because theta works for you, but the risk profile flips: small, frequent gains and occasional large losses.
Common strategies
- Covered call. Own 100 shares, sell a call against them. You earn income but cap your upside above the strike.
- Cash-secured put. Sell a put while holding the cash to buy the shares. You get paid to wait, and if the price falls you buy at the strike, minus the premium.
- Credit spreads. Sell one option and buy a further-out one as protection. Less premium, but the maximum loss is defined.
- Iron condors and strangles. Selling both sides to profit if the market stays in a range.
Who sells options
Market makers sell options every day and hedge the risk. Funds sell covered calls on their holdings, and some ETFs are built entirely around it. Volatility funds sell premium because, historically, implied volatility has tended to sit above the volatility that actually happens. That gap is called the volatility risk premium, and it's what sellers are trying to collect.
The drawbacks
- Asymmetric risk. You might win 20 times and give it all back in one gap down. A naked short call has unlimited risk.
- Gap risk. Earnings, news or a weekend can jump straight past your strike. Stop-losses don't help with gaps.
- Assignment. You can be made to buy or sell the shares, sometimes early.
- Margin. Brokers can raise requirements when volatility spikes, exactly when you least want them to.
- Capped upside. Covered calls give away the best days, which are a big part of long-term returns.
Precautions
- Size so that the worst case, not the average case, is survivable.
- Prefer defined-risk structures like spreads while learning.
- Only sell puts on companies you'd genuinely be happy to own at the strike.
- Know the earnings and macro calendar before you sell through it.
- Close winners early rather than squeezing out the last few pence of premium.
Selling options isn't free money. It's being paid to take on risk that someone else wanted to get rid of. The question is always whether you're being paid enough.
Educational content only, not financial advice. Options involve significant risk and are not suitable for everyone.