The UK's largest network DBS has announced it is in talks with a potential buyer.
The share price at 12pm today had jumped 45p to 184.5 from 139.5.
A stockmarket statement released earlier today says: "The board of DBS has noted the recent rise in its share price and announces that it is holding discussions which may or may not lead to an offer being made of the whole of the issued share capital of DBS at a substantial premium the current market price. At this time these discussions are at a preliminary stage."
"A further announcement ill be made in due course."
The network has faxed all its members with a message from its chief executive confirming the discussions and informing them they will be advised of future developments.
DBS has 2,700 registered individuals and 1800 member firms.