Electronic brokerage firm
Third Avenue's bid for the Instinet unit came a month after Instinet agreed to be acquired by Nasdaq for $1.9 billion.
As a part of the deal, Instinet agreed to sell its brokerage arm to buyout specialist Silver Lake Partners for $207.5 million, according to Reuters. Third Avenue offered to buy the unit for $307 million.
"Nasdaq's agreement with Silver Lake does not permit Nasdaq to sell that business to a different party," Nasdaq said in a statement.