iEnergizer (LSE:IBPO) shares collapsed 80% after the outsourcing group announced plans to de-list from AIM.
It said the cancellation was in the best interest of the company and its shareholders, citing reasons such as costs, management time, legal and regulatory burdens, limited free float and liquidity, and limited access to capital.
If the plan is voted through, then the last day of trading will be May 24.
At 9.40am, the shares were changing hands for 63p, down 247p.