I just discovered something quite interesting about what options are — they’re not as complicated trading tools as many people think. Today, I’d like to share with you how they work and why they’ve become a favorite choice for many traders.

Options — or options contracts — are basically agreements that give you the right (but not the obligation) to buy or sell an asset at a fixed price within a certain period of time. The key point here is “the right,” not “the obligation” — that’s why options are useful.

Looking at how they work: when you buy an option, you only need to pay a small fee called the Premium. For example, with Bitcoin, if you expect the price to rise from 27,800 USD, you can buy a Call Option instead of having to buy directly. If the price really goes up to 30,000 USD, you profit. But if the price falls instead, you only lose that Premium fee — nothing more.

There are two main types of options that anyone trading must understand. Call options are when you predict the price will rise, so you buy the right to purchase the asset at the strike price. Put options are the opposite — you buy the right to sell the asset at a fixed price when you’re worried the price will drop. Both have maximum loss equal to the premium, but profits can be unlimited if the market moves in the direction you predicted.

In terms of strategies, there’s a fairly popular one called Covered Call — it’s like “renting out” your shares. For instance, you hold HPG shares and then sell a Call Option at a level 10% higher than the current price. If the price doesn’t rise beyond that level, you receive the Premium fee right away as an additional dividend. The Protective Put strategy is different — you buy a Put Option to protect your portfolio when you’re concerned the market might adjust downward.

But what are options, and what disadvantages do they have? First, they’re more complex than traditional trading, with many technical terms. Second, margin costs can be quite high. Third, option sellers can face unlimited losses — which is why many beginners should start by buying options, not selling them.

In Vietnam, options have not been expanded in the official stock market yet; they are mainly traded through international platforms. Compared with Futures or Certificates (Chứng quyền), options are more flexible, but trading fees can be higher.

I’ve found that understanding what options are really helps expand the ways to make profits beyond the traditional buy-sell model. But like any derivative instrument, you need to learn carefully before getting started. Start with a small scale, choose an asset you understand well, and always have a clear risk management strategy. That’s the key to successful options trading.