NEW YORK — America’s best-known banker is getting a big pay cut. JPMorgan Chase said Wednesday that it will dock the pay of CEO Jamie Dimon by more than half, to $11.5 million from $23 million.

It’s the latest fallout from an embarrassing trading loss at the bank last year, one that ballooned to $6 billion. Its ripple effects have been numerous, forcing Dimon to appear contritely before Congress and putting the bank in the cross hairs of regulators and lawmakers.