UPDATE 2-Regulators say four big banks must hold more capital
* Citigroup, Deutsche Bank, HSBC, JPMorgan Chase top list
* Must hold extra capital to absorb potential losses
* Other big banks assigned smaller buffers
* G20 finance ministers meet in Mexico this weekend
By Rick Rothacker
Nov 1 (Reuters) - Global regulators on Thursday said Citigroup Inc, Deutsche Bank, HSBC and JPMorgan Chase & Co will need to hold the most extra capital of 28 banks considered so large and complex they need an extra buffer to absorb potential losses.
The four global banks will be required to hold an extra 2.5 percent of common equity as a percentage of risk-weighted assets on top of a 7 percent minimum being phased in from January, according to the Financial Stability Board, a regulatory task force for the group of 20 top economies.
The additional cushion aims to make sure large banks cannot threaten the financial system in future crises and require government bailouts.
The FSB will update its requirements twice more over the next two years before they start going into effect in 2016. Continuación...