Why is your Gold price different from other sources?

Why is your Gold price different from other sources?

Like all of our commodity indices, our $GOLD symbol is not technically a gold price at all. It is an index value that corresponds to a theoretical, non-tradable “continuous” contract for gold that uses a weighted average of all the currently open gold contracts. It is provided on an end-of-day basis so that users can compare gold's mid- to long-term performance and trends to other markets. It should not be used to make trading decisions concerning gold itself.

Note: You can track Gold on an intraday basis by charting the “GLD” ETF.