I want to have a lot of pages
I deal with stock exchanges
Laptop is on for about 10 hours a day
Definitely more than enough. If you want to have many tabs at the same time, you should make sure that you have enough RAM
For Office this thing is almost overkill, so it will pack easily, but then make sure that you buy a laptop with at least 16 GB RAM or install an additional 8GB RAM bar in an 8GB model.
He is definitely enough for that. Depending on what "very many pages" means, 16 GB of RAM could make sense, but you can usually upgrade it if it is not enough.