BNBUSD is the market symbol for BNB priced in US dollars, telling you how many dollars one BNB token will buy. BNB, formerly known as Binance Coin, is the native token of the BNB Chain, a blockchain platform that supports smart contracts and decentralised applications. The token is used to pay transaction fees on the chain and across the wider ecosystem that grew around it.
Trading BNBUSD means taking a crypto CFD position on its price rather than buying and storing the coin yourself, so no wallet or exchange account is needed. You can go long if you think BNB will appreciate or short if you think it will decline. Quotes are in US dollars, the market runs 24 hours a day, and price swings can be large.
Several forces move BNB: demand for activity on the BNB Chain, periodic token burns that reduce the circulating supply over time, regulatory developments affecting the broader ecosystem, and general crypto sentiment. It frequently moves in sympathy with Bitcoin. Note that BNB the token is distinct from the various exchange products that share part of its name.
Suppose BNBUSD is quoted at $550 and you decide to short it, expecting a pullback. You open a position equal to 5 BNB. The price falls to $520, a move of $30 per token in your favour, so your profit is:
5 √ó $30 = $150
If the price had instead risen to $580, the same $30 move would have gone against you for a $150 loss.