Andries Lodewijk Wurfbain was from 1876 until 1890 the first chairman of the Vereeniging voor den Effectenhandel (Association of Securities Dealers at the Amsterdam Stock Exchange). He was also appointed Managing Director of the Dutch central bank, the Nederlandsche Bank, which at that time was a part-time job. He was entrusted with this important post, in which he served from 1890 until his death in 1901, because of his profound knowledge of the securities trading business. With the departure of the fourth generation Wurfbain in 1924 the firm was continued by a brother-in-law, George Frederik Dudok van Heel. On January 1, 1931 the firm began to operate under the name Dudok van Heel & Co. In 1952 it absorbed the stockbroker Lodeesen & Huisken, founded in 1815.
The roots of Nachenius & Zoon go back to 1797. Benjamin Nachenius started as a broker in securities and as a commissionnair , at that time two different occupations. In 1825 he and his two sons began to operate as Nachenius & Zoon. Their range of services was smaller than that offered by Wed. Tjeenk and Wurfbain & Zoon, although they underwrote a few new issues such as the Deli Spoorweg-Maatschappij (Deli Railroad Company on the isle of Sumatra) in 1886. They explicitly excluded trading for their own account. During the nineteenth century, the partners were exclusively recruited from within the family. After the Second World War the firm numbered three partners, among them the last Nachenius, Arnold de Bijl Nachenius Jr.
In 1952, the firm made an initial financial statement available. With a capital account of 500,000 guilders the firm had 60 million guilders in custody. The balance sheet total amounted to three million guilders while the headcount numbered twenty four staff.
As both firms were relatively small, the merger between Nachenius and Dudok van Heel was easily achieved. Interestingly, the new firm had no paid-in capital but worked on the basis of personnel guarantees by the partners. Algemene Bank Nederland, via Wed. Tjeenk, took a 50% share in the partnership on the express condition that the firm would be allowed to go on trading independently. On January 1, 1986 the partnership was transformed into a limited company and from then on fully controlled and guaranteed by Algemene Bank Nederland.
After the merger in 1991 between Algemene Bank Nederland and Amsterdam Rotterdam Bank to form ABN AMRO Bank, the two small independently operating subsidiary firms were merged in 1991 under the name of Nachenius, Tjeenk & Co., the logic being that the two banks essentially served the same client segment.