Switzerland's biggest bank, UBS, is reported to be in advanced talks to buy all or part of its troubled rival Credit Suisse.
Shares in Credit Suisse have fallen sharply in recent days after it said it had found "material weakness" in its financial reporting.
An emergency $54bn (£44.5bn) lifeline from the Swiss National Bank has not resolved the issue.
Regulators are trying to facilitate a deal before markets reopen on Monday.
There are concerns that Credit Suisse shares could continue to plummet, after they fell 24% on Wednesday.
This prompted a general sell-off on European markets, and fears of a wider financial crisis.
The Swiss government held an emergency meeting on Saturday night, but so far there has been no official statement on the progress of the negotiations.
UBS is said to have asked the Swiss government to cover about $6bn (£4.9bn) in costs if it were to buy Credit Suisse, according to sources quoted by Reuters.
Any deal may also result in significant job losses.
The problems have coincided with the failure of two lenders in the US - Silicon Valley Bank and Signature Bank - raising fears over the health of the banking system
Credit Suisse, which was founded in 1856, has faced a string of scandals in recent years, including money laundering charges.
It reported a loss of 7.3bn Swiss francs ($7.9bn; £6.5bn) in 2022 - its worst year since the financial crisis of 2008 - and has warned it does not expect to be profitable until 2024.
UBS, however, made a profit of $7.6bn in 2022.
As well as being a domestic bank with 95 branches, Credit Suisse has a global investment banking operation and manages the assets of rich clients.
It is one of 30 banks worldwide deemed too big to fail because they are of such importance to the international banking system.
At the end of last year, Credit Suisse had a global staff of 50,480, including 16,700 in Switzerland, though 9,000 jobs were to be axed, the Swiss broadcaster SRF reports.
Latest Stories
-
Trump bemoans a portrait of him – but gets a new one from Putin
6 minutes -
US cuts to HIV aid will cost millions of lives – UNAids chief
20 minutes -
‘We can’t change the past’ – Otto Addo urges Ghanaians to get over AFCON disappointment
32 minutes -
Otto Addo declares Benjamin Asare Ghana’s number one goalkeeper
34 minutes -
World Cup 2026: ‘It’s a mistake to think Ghana has qualified’ – Otto Addo cautions Ghanaians
45 minutes -
Meghan launches online shop for fans to buy her fashion favourites
2 hours -
Adu Boahene and wife yet to be formally charged – Deputy AG
2 hours -
Tiger Woods confirms relationship with Trump’s ex daughter-in-law
2 hours -
Criminals don’t voluntarily go to the place of their arrest – Adu Boahene’s lawyers
2 hours -
Mahama has failed in his fight against illegal mining – Twum Barimah
3 hours -
Madagascar 0-3 Ghana player ratings: Partey finds scoring boots, Jordan shines
3 hours -
Energy sector debt remains significant fiscal burden; government should renegotiate power agreements – PwC
3 hours -
World Cup 2026Q: Partey scores twice as Black Stars beat Madagascar
3 hours -
Man in viral video assaulting woman with baby arrested
3 hours -
Adu Boahene, wife can’t be called common criminals – Lawyers
3 hours