megabank

From mega- +‎ bank.

megabank (plural megabanks)

1. (informal) A major bank (financial institution).
   • 2008 February 27, Eric Dash, “Small and Midsize U.S. Banks Beginning to Struggle in Credit Crisis”, in The New York Times‎^[1], archived from the original on 26 November 2022:

     “The megabanks get all the headlines,” said Jaret Seiberg, a research analyst for the Stanford Group, a private wealth management and banking firm.

   • 2017, Mary Kreiner Ramirez, Steven A. Ramirez, The Case for the Corporate Death Penalty, page 207:

     The second reason offered for blanket nonprosecutions for crimes committed at the megabanks involves the possibility that such prosecutions could harm the economy.

   • 2023 March 22, Philip Oltermann, “Switzerland’s national pride dealt heavy blow by the merger of its banking titans”, in The Guardian‎^[2], →ISSN, archived from the original on 31 March 2023:

     While the move has, for now, calmed fears of a repeat of a 2008-style domino effect, the merger has left Switzerland with a new megabank on Paradeplatz square.