If you're looking for financial information about many of the world's biggest corporations, you'll have a hard time finding it, according to a new report by a watchdog group.
"Surprisingly, the sector that makes greater transparency possible is one of the least transparent," the group said. Amazon, Apple, Google and IBM all scored less than three out of 10, the organization said.
An IBM spokesman told Reuters the company publishes a full list of every subsidiary and country-level business in its annual report. Amazon, Apple, and Google did not immediately respond to emails from CNBC for comment.
The report named Bank of China, Honda Motor, Shanghai-based Bank of Communications, Agricultural Bank of China and Russia's Sberbank as the five least transparent companies. Preliminary findings were provided to individual companies, who were invited to comment or suggest corrections. Of the 124 companies reviewed in the report, 84 provide such feedback, it said.
To see how the companies responded in the report, click here.