What Is an Underlying Asset in Options Trading?
An underlying asset is the specific US stock or US ETF that an options contract is based on, and its price movement is what drives the option's value. On Pluang, every US Stock Option or US ETF Option is written on exactly one underlying asset — for example, a call option on Apple has Apple shares as its underlying asset, while an option on an ETF has that fund's shares as the underlying asset. The underlying asset's market price is the reference point for the option's strike price and premium: as it rises or falls, the option's price moves too, though not always in a fixed 1:1 ratio, since time to expiry and implied volatility also affect premium. Buying an option does not make you the owner of the underlying asset — it gives you the right, not the obligation, to buy or sell that asset at the strike price on or before expiry. Pluang currently supports options on a defined list of US-listed stocks and ETFs, accessible once a user completes Global & Yield Asset Verification.
- Determines contract value: The underlying asset's live market price is what an option's premium tracks — a rising underlying typically lifts call premiums and lowers put premiums, and vice versa when it falls.
- Sets the strike price context: Strike prices are quoted relative to the underlying asset's current price, which is how an option becomes in-the-money (ITM), at-the-money (ATM), or out-of-the-money (OTM).
- Two underlying types on Pluang: US Stock Options (underlying = individual US-listed shares, e.g. Apple, Tesla) and US ETF Options (underlying = a US-listed exchange-traded fund).
- Not the same as owning the asset: Holding an option is a derivative right tied to the underlying asset's price, not a direct equity or fund holding — you don't receive shareholder rights like dividends unless you exercise and take assignment of the underlying shares.
Related questions:
Q: How does the underlying asset affect an option's premium?
The underlying asset's price is the main driver of an option's premium, but the relationship isn't 1:1. As the underlying moves, the option's price shifts based on its distance from the strike price, time remaining until expiry, and current implied volatility. This sensitivity is measured by the option's Greeks — delta shows how much premium moves per point of underlying price change, while theta and vega capture time decay and volatility. Two options on the same underlying can react differently to an identical price move if their strikes differ.
Q: Can I trade options on both US stocks and ETFs on Pluang?
Yes — Pluang offers options on both US stocks and US ETFs, listed separately as US Stock Options and US ETF Options. Both use the same underlying-asset mechanics: a contract's value tracks the price of the specific stock or fund it's written on. The two product lines share the same licensed entity, PT PG Berjangka, under OJK oversight, so the regulatory framework is identical regardless of whether the underlying asset is a company's shares or a fund. Availability is shown in the options chain for each supported ticker.
Q: Does owning an option mean I own the underlying asset?
Buying an option gives you a time-limited right over the underlying asset, not ownership of it. As an option holder, you can choose to exercise that right to buy (call) or sell (put) the underlying asset at the strike price, but until you do, you hold none of the underlying asset's shareholder benefits, such as dividends or voting rights. This is also why an option's value can fall to zero at expiry even if the underlying asset itself never lost significant value — the option's rights simply expired unused.
Q: Which underlying assets are available for options on Pluang?
Pluang supports options only on a defined list of US-listed stocks and ETFs available in the app's options section — not every US-listed company or fund has options trading enabled on Pluang. Access to trade options on any supported underlying asset requires completing Global & Yield Asset Verification, Pluang's higher KYC tier for US-market products. The supported underlying assets and their available strike prices and expiry dates are shown directly in each ticker's options chain, so availability should always be checked in-app rather than assumed.