Ashtead Group rose after Credit Suisse raised its target price on the stock from 400p to 545p, retaining an outperform rating. Jupiter Fund Management reported 'another good quarter', but it wasn't enough to stop broker Peel Hunt downgrading the stock from 'buy' to 'hold', pushing the stock lower. Lonmin was also down, largely as a result of nervousness about recent Anglo American events, which have seen miners strike in response to plans by Anglo to close some of its operations. Investec recommends to hold the stock, with its target price at 353p.MITIE Group declined after Credit Suisse reduced its target price on the stock from 290p to 250p and kept an underperform rating. FTSE 250 - RisersAshtead Group (AHT) 459.60p +3.61%Regus (RGU) 112.30p +2.37%Betfair Group (BET) 682.00p +2.10%Perform Group (PER) 387.80p +2.05%Mondi (MNDI) 710.00p +1.79%William Hill (WMH) 349.40p +1.78%Kenmare Resources (KMR) 35.65p +1.60%Synthomer (SYNT) 197.20p +1.60%St. Modwen Properties (SMP) 232.90p +1.57%Marston's (MARS) 129.40p +1.57%FTSE 250 - FallersLonmin (LMI) 329.10p -4.88%Renishaw (RSW) 1,816.00p -4.47%Mitie Group (MTO) 267.10p -4.20%Senior (SNR) 197.90p -3.89%Debenhams (DEB) 101.60p -3.79%Ocado Group (OCDO) 81.65p -3.37%Jupiter Fund Management (JUP) 314.30p -3.29%EnQuest (ENQ) 119.90p -3.23%Taylor Wimpey (TW.) 72.80p -3.00%ITE Group (ITE) 243.60p -2.79%NR