The FTSE Small Caps Index is up 0.1 percent in early session tradingwhile the FTSE Aim All-Share Index is flat, with both underperforming a0.3 percent rise in the blue-chip FTSE 100 index while the FTSE 250mid-cap index is up by 0.3 percent.
Chamberlin, a specialist foundry and engineering group, slumps 13.7percent lower after cutting its full-year sales target, which prompts Finncap toreduce its price target on the stock to 75 pence from 115 pence.
Potash miner Sirius Minerals falls 8.1 percent after it asksauthorities to defer a decision on one of its mining development plans.
Optos, which deals with retinal imaging, rises 15.8 percent afterposting a rise in its customer numbers and stating it remains on track to meetmarket forecasts for its full-year results, leading Numis to raise its rating onthe stock to "buy" from "add".
Reuters messaging rm://sudip.kargupta.thomsonreuters.com@reuters.net