More than 300 global financial institutions invested a total of $748 billion in companies involved in the nuclear weapons industry over a two-year period through January, according to a report by an international nongovernmental organization.

Of the 325 investors, eight are Japanese lenders with a total investment of $25.5 billion, says the Netherlands-based PAX. The eight include Mitsubishi UFJ Financial Group Inc., Mizuho Financial Group Inc. and Sumitomo Mitsui Financial Group Inc.

The 18 recipients, which PAX calls "the top 18 nuclear weapon producing companies," include Boeing Co. and Lockheed Martin Corp., a U.S. defense giant involved in the manufacturing of the long-range nuclear Minuteman intercontinental ballistic missile.