Defence technology supplier Cobham tanked after predicting a drop in revenues in 2013 as it is hit by the fall in US defence spending. The firm also said that a change in its sales mix and new investments would mean lower operating margins next year than are expected in 2012.

Shares of Talvivaara are taking a heavy hit for a second day in a row, as analysts turned increasingly negative on the implications of a leak at the gypsum pond for its mining site, meaning that metals production is temporarily suspended.

Analysts at Finnish broker FIM put out the following note today: "We lower our rating to REDUCE. The facts are what they are, painting a very dark future for the stockholders of the company. Whatever the solution to the capital raising is, it can hardly be positive for current Talvivaara stockholders. We even see a small, but increasing risk of debt restructuring going forward [which could wipe out current equity owners], the FT´s Alphaville comments.

Invensys shares fell after UBS downgraded to neutral, with the target price cut from 280p to 255p.

Meanwhile, information delivery platform Colt saw its share leap although there was no other reason for rise.

Lonmin shares are continuing to show signs of recovery. In recent months the company's operations, situated in the Bushveld Complex in South Africa, have been affected by the strikes and the killing of 34 miners on August 16th at Marikana. The firm also delivered a poor set of results recently, alongside which the company revealed that Xstrata proposed a deal in September which would have seen its own platinum business merged with that of Lonmin (Xstrata owns 24.5% of Lonmin). The move would have left Xstrata with 70% of Lonmin and would have seen Lonmin's top executive replaced by Xstrata staff. However, the approach was rebuffed.


FTSE 250 - Risers
COLT Group SA (COLT) 105.70p +7.20%
Lonmin (LMI) 479.40p +5.29%
ITE Group (ITE) 193.00p +2.93%
Sports Direct International (SPD) 396.00p +2.67%
Raven Russia Ltd (RUS) 67.75p +2.65%
Interserve (IRV) 376.10p +2.45%
Dixons Retail (DXNS) 24.80p +2.23%
TR Property Inv Trust Sigma Shares (TRYS) 82.25p +2.11%
Hansteen Holdings (HSTN) 75.55p +1.89%
Provident Financial (PFG) 1,353.00p +1.81%

FTSE 250 - Fallers
Cobham (COB) 189.50p -10.19%
Talvivaara Mining Company (TALV) 93.45p -9.71%
Invensys (ISYS) 222.80p -5.07%
Bumi (BUMI) 264.00p -4.66%
Perform Group (PER) 403.90p -3.88%
Chemring Group (CHG) 235.40p -3.33%
Ultra Electronics Holdings (ULE) 1,620.00p -3.28%
Imagination Technologies Group (IMG) 467.50p -3.21%
IP Group (IPO) 107.00p -2.73%
Balfour Beatty (BBY) 239.10p -2.57%

NR

Related share prices
COLT Group SA (COLT) share price
Invensys (ISYS) share price
Cobham (COB) share price
Lonmin (LMI) share price