Taken from Ample (courtesy of pork belly on ADVFN)
On 18 Oct 04, Citadel Group, a large and successful Hedge Fund (with offices in the USA + LONDON), took out a large BPRG convertible bond in the USA.
They knew that BPRG was a very volatile and heavily traded stock due too the City's inability to value them correctly.
After taking out the Bonds, they have since been using the "convertible bond arbitrage" investment strategy, specifically designed for this type of situation, to make a mint shorting their own bonds. Using this strategy, they make money on BPRG whether they go up or down.
You will note that as soon as Citadel bought the bonds on 18 Oct, Citadel began shorting them and the shares began their slide !
This is not 100% certain, however, all the facts fit like a glove.
When will they go back up ? whenever Citadel decide basically.
See:
Citadel buy BPRG bonds on 18 Oct 04 :
CLICK HERE
"convertible bond arbitrage" explanation: (COPY AND PASTE LINK INTO Browser ADDRESS BAR)
http://www.magnum.com/hedgefunds/convertibles.asp
Info on Citadel:
CLICK HERE
The chart shows that almost immediately after Citadel bought the bonds on 18 Oct, the shares started their slide: