FTSE 100 movers: Tullow recovers, Tesco and Morrison hit by Nielsen data

By mid afternoon on Friday, the FTSE 100 was almost exactly flat on the day, meaning despite all the drama of China's 'Black Monday', London's blue chips would end the week higher than they finished the Friday before.

Leaving the rest in its wake by mid-afternoon was Inmarsat, after a rocket launched carrying the third and final satellite in the group's $1.6bn Global Xpress superfast broadband programme. Confirmation of the success of the Proton launch will not be possible until Saturday morning, however.

It was later overtaken by bargain hunting in Tullow Oil on the back of oil price enjoyed a second consecutive strong day and hovered around $47. On Thursday oil made its biggest one-day gain since 2009.

Diageo was one of the main risers, with some speculation that Nelson Peltz's Trian Fund Management may be building a stake. Some analysts also cited read-across from Heineken’s brewing seminar in London on Thursday, which, according to broker Whitman Howard delivered a strong message on "premiumisation" in beer that highlighted the upside at Diageo.

Going the other way, Antofagasta had been the outperforming miner this week but failed to hold onto its one-month high reached on Thursday.

Tesco and Morrison were both down after market research firm Nielsen released sales volume data on UK supermarkets and said all the Big Four grocers had lost market share to discounters. Tesco's market share slipped to 27.9% from 28.4% and Morrisons ended its three-month long run of growth with a 1.3-percentage point decline to 10.8%. Rivals Sainbury's performed relatively well with just 0.5 lost to 15.9% and its shares were roughly flat, while WalMart's Asda lost a whopping 3.4 points to 15.6%.

Shire and Weir both outperformed the market the previous day, but like Antofagasta gave up some of those gains as some caution returned.

FTSE 100 - Risers
Tullow Oil (TLW) 223.20 +9.20%
Inmarsat (ISAT) 964.50p +3.10%
BG Group (BG.) 979.10p +1.80%
Taylor Wimpey (TW.) 199.60p +1.27%
ARM Holdings (ARM) 929.00p +1.20%
Glencore (GLEN) 147.10p +1.20%
Relx plc (REL) 1,045.00p +0.97%
Diageo (DGE) 1,709.50p +0.86%
Royal Dutch Shell 'B' (RDSB) 1,672.50p +0.78%
Persimmon (PSN) 2,076.00p +0.78%
Meggitt (MGGT) 473.20p +0.77%

FTSE 100 - Fallers
Antofagasta (ANTO) 595.50p -2.62%
Morrison (Wm) Supermarkets (MRW) 165.00p -1.84%
Marks & Spencer Group (MKS) 514.00p -1.81%
Anglo American (AAL) 714.00p -1.69%
Weir Group (WEIR) 1,370.00p -1.65%
Shire Plc (SHP) 4,939.00p -1.52%
Tesco (TSCO) 188.70p -1.44%
TUI AG Reg Shs (DI) (TUI) 1,172.00p -1.43%
Aviva (AV.) 479.90p -1.42%
3i Group (III) 489.30p -1.35%