Overall, the opening hours for BUX are in line with the market, however there are a few exceptions with certain stock exchanges opening 2 minutes after the original market opens. We do this to help control the opening rates for our customers. This is, however very exceptional.
For a complete overview of all opening hours per product, please see: what are the opening hours of all products?
If you have any further questions in regards to this, please feel free to contact us via email at BUX Support.