Daily Journal Corp. saw its operating income slide into the red in its last quarter, but eeked out a profit thanks to its investment portfolio.

The Downtown L.A. legal newspaper publisher reported net income for its fiscal year, which ended Sept. 30, of $631,000 (46 cents a share), compared to $3.8 million ($2.74 a share) for the same period a year earlier. Revenue fell 24 percent to $11.4 million.

For its main business operations, the company reported an operating loss of $3.1 million for the year, down sharply from an operating profit of $3.8 million the year before. But the company, which has stock and bond investments valued at more than $170 million, also brought in more than $3 million dividends and interest income, which kept the company in the black for the year.

Daily Journal’s chairman is Los Angeles billionaire investor Charles Munger, right-hand man to Omaha icon Warren Buffett. The firm’s outsized investment portfolio has draw scrutiny from regulators in the past, with the Securities and Exchange Commission asking in 2013 why the company wasn’t regulated as an investment company, though the commission ultimately took no action against the firm.

Shares of Daily Journal Corp. rose 10 cents, or less than 1 percent, in Wednesday trading to close at $188.60.