Additionally, similarities can be drawn between modern day brokers and the experienced traders of the trading clubs. The network of traders allowed for organized movement of knowledge and quick execution of transactions. Thus, the secondary market for VOC shares became extremely efficient, and trading clubs played no small part. Brokers took a small fee in exchange for a guarantee that the paperwork would be appropriately filed and a "buyer" or "seller" would be found. Throughout the 17th century, investors increasingly sought experienced brokers to seek information about a potential counterparty.