Like any industry, the bicycle sector is a broad one and international, with sophisticated supply chains going around the world. There are so many companies from garage artisan frame builders to corporate giants quoted on several stock exchanges at once.
I’ve put together a list of some of the main companies involved and the brands they operate. You might find some surprises, for example that Lapierre is Dutch-owned and part of the same corporate empire as Tunturi gym bikes. Or that helmets from Giro and Bell are from the same company.