The Federal Deposit Insurance Corp. took over Orion Bank, based in Naples, Fla., with about $2.7 billion in assets and $2.1 billion in deposits, and Sarasota-based Century Bank, with $728 million in assets and $631 million in deposits.
Pacific Coast National Bank in San Clemente, Calif. was also shut down. It had $134.4 million in assets and $130.9 million in deposits.
IberiaBank, based in Lafayette, La., agreed to assume all of Orion Bank's deposits and $2.4 billion of its assets, as well as Century Bank's deposits and $706 million of its assets.
The FDIC will retain the rest for eventual sale.
In addition, the FDIC and IberiaBank agreed to share losses on roughly $1.9 billion of Orion Bank's loans and other assets, and on about $656 million of Century Bank's.
Orion Bank's 23 branches will reopen Saturday as offices of IberiaBank. Century Bank's 11 branches will reopen during normal business hours, starting Saturday, also as IberiaBank.
Tustin, Calif.-based Sunwest Bank agreed to assume all of Pacific Coast National Bank's deposits and essentially all of its assets.
Pacific Coast National Bank's two branches will reopen Monday as branches of Sunwest Bank.
The failure of Pacific Coast National Bank will cost the federal deposit insurance fund an estimated $27.4 million. Orion Bank's will cost $615 million, while Century Bank's failure will cost $344 million.
As the economy has soured, with unemployment rising, home prices tumbling and loan defaults soaring, bank failures have cascaded and sapped billions out of the federal deposit insurance fund. It has fallen into the red.
To replenish the fund, the FDIC on Thursday mandated the roughly 8,100 insured banks and savings institutions pay about $45 billion in premiums in advance that would have been due over the next three years. It is the first time the agency has required prepaid insurance fees. The idea is for banks to spread the costs over three years rather than paying a one-time fee that would deplete their capital reserves.
The FDIC expects the cost of bank failures to grow to about $100 billion over the next four years.
Depositors' money - insured up to $250,000 per account - is not at risk, with the FDIC backed by the government. The FDIC still has about $21 billion cash in loss reserves apart from the insurance fund. It can also tap a Treasury Department credit line of up to $500 billion.
Last week brought the closure of the fourth-biggest bank to fail this year: San Francisco's United Commercial Bank, with $11.2 billion in assets. East West Bancorp Inc., parent of East West Bank of Pasadena, Calif., agreed to buy all of United Commercial's deposits and most of its assets.
Banks have been especially hurt by failed real estate loans. Banks that had lent to seemingly solid businesses are suffering losses as buildings sit vacant. As development projects collapse, builders are defaulting on their loans. Failures have been concentrated in California, Georgia and Illinois. Pacific Coast National Bank's failure was the 15th in California this year. Eleven Florida banks have failed this year.
If the economic recovery falters, defaults on the high-risk loans could spike. Many regional banks hold large concentrations of these loans. Nearly $500 billion in commercial real estate loans are expected to come due annually over the next few years.
The 123 bank failures are the most in a year since 1992 at the height of the savings-and-loan crisis. They have cost the federal deposit insurance fund more than $28 billion so far this year. They compare with 25 last year and three in 2007.
The number of banks on the FDIC's confidential "problem list" jumped to 416 at the end of June from 305 in the first quarter. That's the most since June 1994. About 13 percent of banks on the list generally end up failing, according to the FDIC.
By AP Business Writers Stephen Bernard and Marcy Gordon