During the 1920s, the Kleinwort family were known as the leaders of the foreign exchange market, while Japheth, Montagu & Co. and Seligman still warrant recognition as significant FX traders.
Noong mga 1920, ang pamilya Kleinwort ay kilala bilang mga pinuno ng merkado ng dayuhang palitan, habang ang Japheth, Montagu & Co. at Seligman ay nagpapahintulot pa rin ng pagkilala bilang mga makabuluhang mangangalakal ng FX.