It is no longer true that every watch brand is a unique and independent manufacture. As in the automotive industry, the watch industry is merging, combining, buying up and optimising. This is how large concerns are formed that bring together several watch brands. For your reference, I have prepared a basic overview of the division of the watch market.
Ranked by market share size for 2020.
Rolex Group 26.8%
Rolex, Tudor
Swatch Group 25.2%
Omega, Longines, Tissot, Breguet, Blancpain, Rado, Swatch, Mido, Hamilton, Harry Winston, Certina, CK Watch, Glashutte Original
Richemont 18,2%
Cartier Watch, IWC, Jaeger-LeCoultre, Vacheron Constantin, Officine Panerai, Piaget, Montblanc, Van Cleef & Arpels Watches, Lange & Sohne, Baume & Mercier, Roger Dubuis
LVMH 7.1%
Tag Heuer, Hublot, Bulgari, Zenith, Dior
Patek Philippe 5.8%
Audemars Piguet 4,3%
Richard Mille 2.5%
Breitling 2.4%
Hermes
Kering
Gucci, Ulysse Nardin
Chopard
Franck Muller
Chanel
Frederique Constant
Victorinox
Titons
C. F. Bucherer
Oris
Mondaine
Bell & Ross
Maurice Lacro
F. P. Journe