Credit Suisse has hiked its target price for telecoms group Vodafone from 195p to 245p, saying that it sees a 50 per cent probability of a bid from US counterpart AT&T.However, one possible "red line" for the American company could be that a bid may put its own dividend cover at risk, the bank suggested, "particularly if its US mobile growth stalls next year".Deutsche Bank has lowered its stance for Costa and Premier Inn owner Whitbread from 'buy' to 'hold', recommendation investors to "consolidate and take stock" after a strong run. "The longer term growth and value creation story remains very much intact. We have laid out how one can get to 6,250p (+85%) by the end of the current Chief Executive Officer (CEO) milestone plan. However, after 35% outperformance from the lows this year and with only 5% upside to our new target price (based on FY'15E), we are downgrading our recommendation from 'buy' to 'hold'."JPMorgan Cazenove has raised its target price for ARM Holdings but retained its 'neutral' rating, saying that it sees no momentum for the chip designer in the near term."With no upgrades to estimates expected in next couple of quarters we see no reason to be building positions at this time and would take profits in the short term," the bank said.Investec has downgraded its rating for banknote printer and ID services group De La Rue from 'add' to 'hold' after the company's profit warning on Wednesday.The broker explained that first-half results should be in line with expectations with operating profits up 18% at £39m. However, "this is now unlikely to be enough to offset the impact of poorer pricing in banknote printing in H2 and ongoing weakness in Cash Processing Solutions," Investec said.BC