California First National Bancorp

* California First National Bancorp, a Santa Ana bank holding company, reported that net income for the fourth fiscal quarter declined 18% to $4.2 million, or 37 cents a share, from $5.1 million, or 43 cents a share, a year ago. Revenue dropped 31% to $17.7 million.

* California First National Bancorp, a Santa Ana bank holding company, reported that net income for the fourth fiscal quarter declined 18% to $4.2 million, or 37 cents a share, from $5.1 million, or 43 cents a share, a year ago. Revenue dropped 31% to $17.7 million.

Amplicon Inc., a Santa Ana computer equipment leasing company, said it has reorganized itself into a bank holding company called California First National Bancorp. CalFirst, in turn, now owns the Amplicon business as well as California First National Bank, which it acquired. It invested $20 million in the bank so it could begin operations.

Amplicon Inc., a Santa Ana computer equipment leasing company, said it has reorganized itself into a bank holding company called California First National Bancorp. CalFirst, in turn, now owns the Amplicon business as well as California First National Bank, which it acquired. It invested $20 million in the bank so it could begin operations.

Japanese-owned World Trade Center Building Inc. sold two Irvine office buildings to a Glendale pension fund advisor for $77 million. American Realty Advisors bought office buildings with a combined total of 331,000 square feet of space at 18201 and 18401 Von Karman Ave. World Trade, based in Tokyo, bought the five- and 11-story towers 14 years ago, said Michael Kane, one of the CB Richard Ellis brokers who represented the seller.

Western Digital Corp., a maker of disk drives used in personal computers and video-game consoles, said second-quarter profit more than tripled on stable sales. The Lake Forest company earned $12.7 million, or 7 cents a share, compared with $3.58 million, or 2 cents, a year earlier, the company said. Sales rose 2.3% to $574.7 million. The company said last month that it benefited from improved PC sales and from Microsoft Corp.'s Xbox video-game console, which uses its drives.