Online gamer PartyGaming's protracted merger talks with Bwin, its Austrian rival, are apparently still on ? just. But the biggest game in town is the US, where the authorities, despite their earlier moralistic stance, need the revenues. Any move will probably be on a state-by-state basis, and PartyGaming says that talks with potential US partners are going well. The shares are selling on about 11 times this year's earnings, suggesting that they are about up with events, the Times writes.Persimmon beat expectations on Tuesday as it reported revenue for the first half of 2010 was up 26% with margins improving from 1.5% last year to 7.5%. The Telegraph, though, simply does not feel confident enough about the health of the housing market to recommend a housebuilder at present and here could be better opportunities to acquire in the sector when the uncertainty of the October spending review has passed. Avoid.The Independent adds that positive-looking fundamentals have not stopped the Persimmon share price from easing back by about 20% since the beginning of the year, so sell.Defence group Meggitt is not expensive, compared to some of its peers on 11 times this year's forecast earnings, with a moderate prospective yield of 3%. But after a strong rally in the first part of 2010 there is not much scope for further upside. Sell says the Independent.Ultra Electronics, formerly a defence electronics company focused on the UK, has expanded so much that more than half of its sales were in North America last year. It has also diversified and now makes technology used on battlefields, in civil and military aircraft, in defence and security systems and in the transport and energy sectors. The potential for expansion suggests these shares are worth holding, the Independent writes.Please note: Digital Look provides a round-up of news, tips and information that is impacting share prices and the market. Digital Look cannot take any responsibility for information provided by third parties. This is for your general information only as not intended to be relied upon by users in making an investment decision or any other decision. Please obtain a copy of the relevant publication and carry out your own research before considering acting on any of this information.