What Are Options: Understanding Calls and Puts in 10 Minutes
Options give the buyer the right (not the obligation) to buy or sell an asset at a preset price. We explain calls, puts, the premium, leverage, and the risk of losing the entire premium.
The "right" to trade, not the "obligation"
Options are a derivative product that gives the buyer the right β not the obligation β to buy or sell an asset at a preset price, within a time window. It is a flexible tool that many beginners misunderstand. This article explains the two core types: calls and puts.
The two types of options
- Call option: gives the right to buy the asset at the "strike price." You buy a call when you expect the price to rise.
- Put option: gives the right to sell the asset at the strike price. You buy a put when you expect the price to fall, or to hedge a portfolio.
Each option has a predefined strike price and expiry date. The buyer pays a premium for this right.
A simple example
A stock is at 100. You buy a call with a strike of 110 for a premium of 3.
- If the price rises to 130: you exercise the right to buy at 110, so a profit of (130 minus 110 minus 3) = 17.
- If the price is below 110 at expiry: you do not exercise, only losing the 3 premium β no more.
The key feature: for the buyer of an option, the maximum loss is the premium paid, but the upside can be large.
Leverage and "losing the whole premium"
- Leverage: an option premium is much cheaper than buying the asset, so a small move in the asset can change the premium by a very large percentage.
- Risk of total premium loss: if the option is "worthless" at expiry (price below the strike for a call), you lose the entire premium β similar to the risk of a covered warrant in Vietnam.
- Time-value decay: the closer to expiry, the more the option time value declines β an option is a "decaying" asset.
Hedging β the less-mentioned use
Beyond speculation, puts are often used to hedge: holding a stock and buying a put as "insurance" β if the price drops sharply, the put offsets the loss. This is a prudent use of options, related to portfolio hedging.
Warning: selling options has unlimited risk
This article covers buying options (loss limited to the premium). By contrast, writing (selling) options can incur very large, even nearly unlimited losses β this is a strategy for professionals, not for beginners.
Conclusion
Options give the buyer the right (not the obligation) to buy (call) or sell (put) an asset at a preset price. The buyer has loss limited to the premium but large potential upside, in exchange for the risk of losing the whole premium at expiry and time-value decay. Options are powerful leverage and hedging tools, but complex β unsuitable for long-term accumulation by beginners.
Next step
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