FTSE 100 on track for biggest weekly slump in a month By: MarketWatch December 11, 2015 at 04:16 AM EST U.K. stocks are looking at a seventh straight day of losses that would leave the benchmark FTSE 100 with its worst weekly decline in a month. Read More >> Related Stocks: Astrazeneca Plc ADR BP Plc ADR Royal Dutch Shell Cl B ADR Shire Plc Ads