Bankers are set to delay an estimated $11bn (€9bn) of proposed initial public offerings in Europe until September, as volatility hits stocks ahead of the traditional summer lull in activity.

The pipeline for IPOs in Europe, the Middle East and Africa stands at more than $11bn via 68 deals as of May 25, according to data provider Dealogic. Deals include Polish utility Tauron, which plans to raise $1.2bn, Russian miner Suek, which hopes to raise $1bn, and South African hospital owner Life Healthcare, which intends to raise $897m.