Jefferies has maintained a 'buy' recommendation for temporary power and temperature control group Aggreko, saying that it sees the company "developing future growth" after an analyst visit this week."There are a range of opportunities available to Aggreko with some new and different ways of working," the broker said.Goldman Sachs is keeping faith with stock market darling ASOS despite yesterday's news that the online fashion retailer cut its full-year margin guidance and blamed a strong pound for slower third quarter growth.Asos said its earnings before interest and tax (EBIT) margin for the current financial year would be 4.5%, down from its previous forecast of 6.5%. Goldman, which has a neutral view on the stock, said the EBIT miss was material but ASOS was still experiencing good underlying growth.Canaccord Genuity has upgraded its rating for Synergy Health from 'sell' to 'hold', hailing the healthcare services group's new contract in the single-use device (SUD) market."We believe Synergy will become increasingly attractive as a business over the next 12 months, as HSS increases and headwinds from Dutch linens reduce. This should return the company to organic growth for the first time in three years. However, in our view the valuation already builds in this return to growth."Deutsche Bank has said that announcements made in this week's Queen's Speech regarding the government's focus on housing supply spells good news for UK-listed housebuilders.The bank said: "With investors questioning how the gap is to be bridged from current housing starts to targeted levels we see this week's update as supportive to our view that an expansion in other tenures of housing (custom build, build to rent etc) are important elements being encouraged."BC