Wolseley slides as FTSE 100 waits for Bernanke The plumbing and building material supplier said it was exploring "strategic options" for its French businesses which sent the shares tumbling 3.5pc. Wolsley followed G4S down in early trading, as the security company continued to reel from the revelations the group would not be able to train enough guards for the Olympic Games in London. The group is likely to remain at the forefront of traders" minds today, with chief executive Nick Buckles to be questioned by MPs and the shares shed 3.8pc after broker Panmure Gordon cuts its price target for the company to 236p from 300p and HSBC slashed theirs to 290p from 315p. In the wider index, the benchmark FSTE 100 index fell this morning as traders wait to hear what Federal Reserve Chairman Ben Bernanke says later today about quantitative easing. The blue chip index slipped 13.55 points to 5,648.92, while the FTSE 250 edged up 3.02 11,078.30 "Lots of things for investors to get their teeth into today which is why we could easily see caution continue into the afternoon when the highlight of the day gets underway in the form of Ben Bernanke's two day congressional testimony on the US economy," said Simon Denham of Capital Spreads. Among the mid cap companies, CSR was the star performer, surging 36.3pc after the group announced it had sold its handset operations to South Korean giant Samsung.