There are some possible reasons for the difference between CFD instrument quotes and other sources:
The contract in question has expired.
On the stock market, there are several contracts available for trading, and you are trading only one of them. Each contract has its own term, and once it expires, we replace the previous contract with the next one.
The prices of these two contracts are usually different, hence the short-term price difference compared to other data sources.
If you compare our quotes with stock market quotes, you will see that they match. Therefore, the quotes we provide are actual market quotes.
Quotes are based on different contracts.
Some assets or instruments are quoted on multiple exchanges. For example, the Nikkei 225 is quoted both on CME Group and the Tokyo Stock Exchange, with possible differences in quotes and conditions between them. Even on the same stock market, several contracts based on the same underlying asset can be traded simultaneously, but with different expiration dates.