On 10 February 2017 IPIC bonds fell from $ 108.905 to $ 85.30,approximately 20% in just a day.
It then recovered to $ 108.75 over a period of seven days and the price has essentially plateaued.
Given the issues including illegality and money laundering surrounding the settlement reached with 1MDB ,announced on 24 April 2017, it is probable that insiders started dumping the bonds in early February.The price recovery was probably due to “stabilization” efforts.
IPIC bonds are listed on the LSE ,and this type of manipulation has obviously caused significant losses to bondholders who are located all over the world. While UK regulators appear to be looking the other way, a class action is not unlikely.