The gauge is the most XAUT-specific feature on this page, nothing like it exists on a standard gold price site. It measures the live spread between XAUT's Binance market price and the XAU spot reference (Binance XAUUSDT), displayed both in dollar terms and as a percentage. The needle sits at centre (par) when they match and travels toward whichever edge the spread is running to, right for a premium and left for a discount. The pale centre band marks the ±0.3% window the spread normally keeps to, and the track deepens in amber toward both edges because either extreme is unusual for a token built to track spot, not because one of them is the good outcome. The range is clamped at ±1% to keep the visual meaningful, moves beyond that are extremely rare and usually signal a temporary liquidity event. To read the spot leg on its own, with candlesticks and indicators, use the XAU/USD chart.
A sustained premium above 0.5% is worth watching: it typically means on-chain buyers are absorbing new supply faster than arbitrageurs can mint and sell, which can precede a spot price move. A discount below −0.3% is historically brief, the redemption floor (50 oz minimum, Switzerland delivery) is the hard backstop that prevents deeper discounts from persisting. Premium, discount and spot are defined in plain language in the gold market glossary.