Son Boosts SoftBank Collateral Pledges to 33% of Holdings

SoftBank Group Corp. founder Masayoshi Son boosted the amount of stock pledged as collateral to financial institutions to 153.3 million shares, or about 33% of his stake in the Japanese conglomerate.

The Japanese billionaire disclosed an increase of about 8.05 million shares as of March 8, worth about 34 billion yen ($291 million) at current prices. Bloomberg calculated the change from an earlier January disclosure.