XAUUSD is the market symbol for gold priced in US dollars. XAU represents one troy ounce of gold, while USD is the quote currency. If XAUUSD rises, gold is becoming more expensive in dollar terms. On a 100-ounce contract, a $1 price move is about $100 in profit or loss per 1.00 lot before costs; contract size and pip naming vary by broker, so confirm the symbol specification before sizing a trade.
XAUUSD trades nearly around the clock during the global trading week and is especially active through the London and New York sessions. Its price can react sharply to US interest-rate expectations, inflation data, the dollar, real yields, central-bank demand, and geopolitical risk. A $1 price move on a 100-ounce contract is about $100 per 1.00 lot before costs, regardless of whether a broker calls that move 10 pips or 100 pips. Because contract size, pip convention, and account currency differ, gold requires instrument-specific position sizing.
Risk note: Gold can move sharply around major US data and central-bank decisions; size positions for volatility.