JPMorgan, Wells Fargo, Goldman Sachs and Citi kicked off earnings season on Wednesday with their December-quarter results.

Goldman Sachs said its profit more than doubled in the fourth quarter, boosted by companies’ growing appetite for dealmaking. Profit jumped 105% to $4.11 billion. That amounted to $11.95 per share, which was far better than the $8.

Some of Wall Street’s biggest banks reported a surge in profit today on the back of a rebound in dealmaking and strengthening equity markets toward the end of last year. JPMorgan Chase, the US’s biggest lender,