JP Morgan has toppled Goldman from the top spot in announced US M&A deals so far this year but Goldman has retained its global crown, according to Dealogic, the investment banking research group.

The 2004 ranking, as at June 21, emerged as deal value for global announced mergers and acquisitions during that period jumped almost 55% to $924.5bn (€765bn). Last year there were 10,098 deals valued at $601.3bn.