A DECISION out of South Korea to use microchips designed in Cambridge rather than Kings Langley in Hertfordshire caused Imagination Technologies to tumble to the bottom spot on the mid cap index yesterday.
Hertfordshire-based Imagination designs graphics processing units (GPUs) that are in the microchips of smartphones. Yesterday it was revealed that it has lost a Samsung contract to Cambridge-based peer Arm Holdings.
Technology giant Samsung's new Exynos 5 Octa chip uses Arm's Mali technology but the previous version of the device used Imagination's GPU.
News of the Samsung switch, and fears ahead of Apple's results after the markets closed last night, meant that investors in Imagination lost their nerve and the shares fell 11.3 per cent - or 32.1p - to 250.7p, a three-year low.
Fears of an Apple sales slowdown hit Imagination because it is its largest loyalty payer. Scribblers at Liberum Capital said: "The loss … plus the slowdown at Apple will drag on Imagination's future royalty revenue."
Liberum said Samsung reported that Arm's technology "boosted" the graphics performance by twice as much, and the chip is set to be mass-produced in August.
Liberum added: "Samsung has tended to switch between IP vendors for different chips. Its return to Arm also shows that Arm's GPU now matches Imagination in performance terms, having historically trailed Imagination."
Liberum rates Imagination a hold until there is a clearer picture of its future outlook. But Arm didn't manage to take the lead, and declined 8p to 898p.
Across the wider market, the benchmark index was hit by weaker US manufacturing data, and the FTSE 100 declined 25.73 points to 6,597.44.
But miners kept the index from falling further after reports that the Chinese Premier Li Keqiang had said that the Chinese government's target for China GDP growth would be 7 per cent at the very minimum.
Growth in China is good news for commodities, and it pushed the miners ahead with Glencore Xstrata top of the table, up 13.7p to 282.7p.
Bottom of the table was Tullow Oil. The explorer sank more than 7 per cent when it admitted it had "plugged and abandoned" its "ambitious wildcat exploration well" off the coast of South America.
The dry well in French Guiana accompanied news of a gas discovery in Mozambique. But despite the setback it remained optimistic that it could eventually find oil off the coast of Africa, and said "potential for discovering oil in this region remains after we encountered wet gas". Investors, however, were unconvinced and the shares fell 73p to 1,041p.
Easyjet plunged 51p to 1,336p after HSBC analysts decided its share price and valuation was "too hot". Diageo dipped 20p to 2,020p when it got the go-ahead from Chinese authorities to buy the remaining 47 per cent it didn't already own in the white-spirit joint venture Sichuan Chengdu Shuijingfang for £233m.
Morgan Stanley took a bet online business will become more important for bookies. Its analysts said said they "expect enthusiasm for Ladbrokes' digital turnaround to increase" and upgraded it to equalweight. They said they preferred William Hill but added that "significant underperformance" at Ladbrokes "could be ending". Ladbrokes rose 0.9p to 202.3p and William Hill declined 4.2p to 464.2p.
The insurer Beazley fell 17p to 225.7p as it reported a 27 per cent slide in first-half profits because of reduced investment income. Meanwhile, the chemicals group Croda lost 120p to 2,449p as it reported profits up but said Europe was sluggish.
HSBC's Lena Thakkar is expected a period of strong trading from pubs, which she thinks should benefit from "warm weather, easy comparison figures and a gradual UK recovery". She raised her estimates for Greene King, which has used the former rugby player Lawrence Dallaglio as its ambassador, and Mitchells & Butlers. Greene King was static at 873p and M&B advanced 10p to 415p.
Snap up shares in the UK's biggest spread betting group, Investec insists. The broker said IG's first-half results were marginally ahead of Investec's forecast and they remain "positive on the stock for both long-term growth and income". They rate it a buy with a 700p price target for shares that are 582p.
Flog shares in Sage Group, broker Sanlam Securities suggests. It thinks that despite the trading update being in line with expectations the software group has "low organic growth" and the fact its French and Spanish business "looks tough" means they rate it a sell with a price target of 315p for shares currently at 359p.
Hang on to Premier Foods, Shore Capital advises. The broker thinks the food group is continuing the "engineering" needed to turn the debt-laden group around. The bread- to-cake business reported better than expected half-year profits yesterday and Shore adds that to "be fair to its management, the focus on simplification is bearing fruit". But there are issues around its capital structure and scribblers at Panmure Gordon expect that a "£200m equity raise" would be a "rational course of action". Shore rates the group a hold with a price target of 90p for shares that are 90.25p.
Update your news preferences and get the latest news delivered to your inbox.