Warren Buffett's firm reports $12.8 billion loss as investments fall but its insurers performed well

OMAHA, Neb. (AP) — Warren Buffett's company has reported a nearly $13 billion loss in the third quarter as the paper value of its investments fell, but the companies it owns — particularly the insurers — generally performed well.

Berkshire Hathaway said Saturday that it lost $12.8 billion, or $8,824 per Class A share, in the quarter. That's significantly bigger than the $2.8 billion loss, or $1,907 per Class A share, that it reported a year ago.

But most of those investment losses are unrealized because Berkshire didn't actually sell most of its stocks with its biggest holding being a massive stake in Apple. Accounting rules require it to include the value of its investments, which it put at $341.1 billion at the end of the quarter, in its earnings. Last quarter, it said its stock portfolio was worth $353 billion.

That's why Buffett has long said investors are better served focusing on Berkshire's operating earnings, which exclude the value of its investments that can vary widely quarter to quarter. By that measure, Berkshire said its operating profit jumped nearly 41% to $10.8 billion, or $7,437.15 per Class A share. That's up from $7.65 billion, or $5,215.60 per Class A share, a year ago.