Together with some banks such as Goldman Sachs and Morgan Stanley, the Nasdaq launched the Nasdaq Privat Market, which is to become an independent, independent exchange company, as the Nasdaq announced on Tuesday.
Takeover bids, auctions and so-called block trades are to be made on the platform.
This involves the sale of large blocks of shares outside of the traditional stock exchanges.
Investments in Nasdaq Privat Market also come from SVB Financial Group and Citigroup.
The Nasdaq did not comment on the financial details.
The demand for such platforms for trading shares in privately owned companies has been increasing for some time. The US bank JP Morgan, for example, participated in the startup Zanbato, which enables such private investments. The world's largest asset manager Blackrock announced last month that it wanted to get involved in this rapidly growing market.