Numis Securities has maintained its 'hold' rating for Aberdeen Asset Management after Thursday's first-quarter statement, saying that the shares are "mostly up with events".Trading at 14 times earnings, the broker said that the stock "is not as cheap as it was in the past" despite the company's earnings growth prospects being lower.UBS has kept a 'buy' rating for mining giant Rio Tinto, saying that the stock remains its top pick in the sector on the back of its volume growth, cost cutting and cash-flow."Rio Tinto continues to be our most preferred stock; its strong production report gives us confidence in our 15% iron ore volume growth forecast next year, which together with continued focus on cost cutting should facilitate significant earnings growth," UBS said.Credit Suisse has hiked its target price for Next from 5,500p to 6,500p on the back of the retailer's strong brand momentum, but kept a 'neutral' stance on concerns over long-term forecasts for the company."Next Brand earnings before interest and tax (EBIT) margins are near 20%, which is frequently a watershed in retail, and, given the relatively low sales growth, we believe the valuation discounts these margins into maturity, driven by positive brand like-for-like sales and a benign gross margin environment, coupled with 21% tax rates, the lowest in 20 years."BC