Companies are surging back to the top of the investment banking fee-payers league table, after five years in which they were outspent by financial institutions, according to new data from Dealogic.

So far this year, six out of the top 10 fee payers are corporates: food and agricultural producer Cargill, commodities company Glencore, US utility PPL, US healthcare company HCA Holdings, German automobile manufacturer Porsche and Hong Kong-based conglomerate Cheung Kong Holdings.