The property portals battle took a new twist yesterday when broker and investment bank Panmure Gordon put “sell” ratings on both Rightmove and Zoopla.

Panmure Gordon said that OnTheMarket posed more of a threat than had been originally thought.

It said it could hurt the profits of Rightmove and Zoopla more than expected.

The broker put a price target of 1850p on Rightmove and 130p for Zoopla.

Rightmove’s share price moved down yesterday, while Zoopla’s moved up slightly.

In its note to investors, Panmure said OTM looked “flawed” but could be a “noisy neighbour” for some time, and could also adapt its business model.

The broker had previously rated Rightmove as a “buy” but only started coverage of Zoopla Property Group yesterday.

Panmure said its key concern for Zoopla was OTM’s “one other portal”.

Reuters, in reporting the ratings, said that the press had reported the rule “largely being ignored”.

Reuters also said that Zoopla’s shares had risen strongly this week, up by over 20% on Monday and Tuesday when the market took the view that the OTM launch was a “damp squib”.

Yesterday, Zoopla’s shares rose for a third day running, but only marginally by 1.8p to finish at 191.80p.

Rightmove’s share price tumbled almost 3% by 72p to finish at 2371p, losing much of its gains of the previous day. It is next due to report to shareholders on February 27.