Aquarius Platinum disappointed investors after saying that its operations with its Marikana Pooling and Sharing Agreement in South Africa are being put on hold as a result of the ongoing low PGM (platinum group metals) basket price. 'Trading conditions in the platinum industry are expected to remain difficult in the short to medium term and these conditions have rendered the operations at the P and SA2 uneconomic,' the company said. Rental equipment firm Ashtead was on the rise ahead of its full-year results next week, with Jefferies saying this morning that it sees upside risk to current-year forecasts. The broker retained its buy recommendation for the stock. Insurance underwriter Lancashire Holdings was also up after it renewed Accordion Insurance, its reinsurance 'side-car' vehicle set up to enable reinsurance contracts to be collateralised. FTSE 250 - RisersOcado Group (OCDO) 98.60p +3.90%Filtrona PLC (FLTR) 463.10p +3.49%Spirent Communications (SPT) 163.50p +3.28%Perform Group (PER) 363.90p +3.12%F&C Asset Management (FCAM) 74.60p +2.90%Renishaw (RSW) 1,495.00p +2.89%Paragon Group Of Companies (PAG) 165.40p +2.73%Wood Group (John) (WG.) 701.00p +2.64%Telecom Plus (TEP) 790.00p +2.60%Imagination Technologies Group (IMG) 500.50p +2.60%FTSE 250 - FallersAquarius Platinum Ltd. (AQP) 68.25p -7.14%Supergroup (SGP) 282.00p -4.37%Exillon Energy (EXI) 93.05p -3.72%African Barrick Gold (ABG) 383.90p -3.59%Centamin (DI) (CEY) 68.50p -3.59%New World Resources A Shares (NWR) 318.70p -2.27%Atkins (WS) (ATK) 681.00p -1.94%Petropavlovsk (POG) 418.30p -1.74%Shaftesbury (SHB) 501.00p -1.67%London & Stamford Property (LSP) 111.40p -1.59%NR