Tullow Oil shares have risen about 40pc since they were recommended at 698p at the end of January. With an exciting 12 months ahead for the group, the shares remain a buy, despite their high rating, says the Sunday Telegraph.Few stocks have done as well as Kalahari this year and the recent momentum is unlikely to continue. But more positive news is expected from Extract in August and big investors are building stakes in this business, so the share price should make further gains in the coming months. There is no harm in taking some profit now, but investors should hold on to half their stock, at least until August, says the Mail on Sunday.Amec has transformed itself over the last couple of years by making 10 acquisitions in its new sectors that offer higher margins. The Telegraph's Questor still rates the shares as a buy.Hilton Food shares are trading on a December 2009 earnings multiple of 9.5 times and yielding 5pc. They are up 10pc since the initial recommendation and remain a buy, says the Sunday Telegraph.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.