Sure, we all know that the FTSE100 moves with the GBP/USD rate, the FTSE250 not so much. But it’s still a subject that a freelancer can roll out again every couple of years on a different site:
One of the stylised facts – stylised here meaning just ‘something that happens’ – about the London markets is that the FTSE 100 index falls when the pound rises on the foreign exchanges.
Equally, the opposite happens: when the GBP/USD rate falls, the Footsie rises.
To a certain extent this also happens with the GBP/EUR rate. Again, this also happens to a lesser extent with the FTSE 250. As with anything that happens with some regularity in financial markets there’s a reason for this too.