Goldman Sachs has worked on nearly half of all private equity deals globally, according to Financial News Online. It has worked as a deal adviser or financial backer on 50 deals worth a combined $226.5 billion. There has been a total of $500 billion worth of deals announced so far this year. If all these deals were brought to fruition, Goldman Sachs could earn in the $4 billion neighborhood for five months worth of work. The firm overall was boosted by advisory work for its in-house private equity arm, which has racked up nearly $90 billion in deals. JPMorgan and Citigroup rank second and third.