FTSE 250 movers: Tullow Oil rockets, but BBA Aviation crashes on broker downgrade

London’s FTSE 250 index was up 0.7% to 16,791.70 at 1525 BST on Thursday, as the broader market bounced back from recent losses and got a boost from better-than-expected UK manufacturing data.

Shares in oil exploration and production company Tullow Oil rocketed after it said its lending banks have completed the routine six-monthly reserve-based lend redetermination process and available debt capacity remains unchanged at $3.7bn. Chief financial officer Ian Springett said: "Today's announcement demonstrates the robustness of Tullow's debt capital structure and emphasises the strong support that we are receiving from our relationship banks.”

Science and technology development company Allied Minds was on the back foot again following recent heavy losses. The stock has fallen sharply since New York-based hedge fund Kerrisdale Capital slammed the group last week. Kerrisdale said Allied was “an investment vehicle with no objective evidence of commercial success” and internal valuations of its subsidiaries are “baselessly optimistic”. The stock fell from 490p to 309p on the back of those comments.

Peppa Pig co-owner Entertainment One rose, bouncing back from sharp falls in the previous session, when it announced a £193.6m rights issue to fund the acquisition of a 70% stake in Peppa producer Astley Baker Davies and pay off some debt. The group also released a trading update that was in line with recent guidance.

Amec Foster Wheeler pushed up after Macquarie raised its stance on the stock to ‘neutral’.

On the downside, BBA Aviation was under the cosh after RBC Capital Markets downgraded the stock to ‘sector perform’ from ‘outperform’ and cut the price target to 290p from 360p, saying a pick-up in business jet activity and sentiment is increasingly unlikely. The Canadian bank said Federal Aviation Administration business jet data continues to show no sign of a pick-up in activity and it doubts if the data will show any material improvement through the rest of this year.

“Although we think BBA is building a fundamentally sound FBO driven business, the limited visibility and currently sluggish bizjet activity looks likely to limit the growth outlook,” said RBC.

Risers

Tullow Oil (TLW) 188.40p +11.41%

Kaz Minerals (KAZ) 93.00p +9.86%

Premier Oil (PMO) 72.00p +8.03%

Ophir Energy (OPHR) 96.00p +6.84%

Clarkson (CKN) 2,146.00p +5.35%

Allied Minds (ALM) 369.00p +4.83%

Evraz (EVR) 76.30p +4.66%

Entertainment One Limited (ETO) 259.40p +4.60%

Hunting (HTG) 417.60p +4.17%

Amec Foster Wheeler (AMFW) 745.50p +4.05%

Fallers

AA (AA.) 276.00p -2.61%

OneSavings Bank (OSB) 382.10p -2.05%

IG Group Holdings (IGG) 754.50p -1.95%

CLS Holdings (CLI) 1,864.00p -1.89%

Vesuvius (VSVS) 346.10p -1.79%

Barr (A.G.) (BAG) 517.00p -1.43%

Petra Diamonds Ltd.(DI) (PDL) 83.10p -1.31%

BBA Aviation (BBA) 264.20p -1.31%

Computacenter (CCC) 746.50p -1.26%

TalkTalk Telecom Group (TALK) 310.70p -1.21%