(Bloomberg) -- Japanese lender Aozora Bank Ltd. surged the most since August 2012 after a fund linked to activist investor Yoshiaki Murakami reported its holdings and said it may make important proposals.Most Read from BloombergApple to Wind Down Electric Car Effort After Decadelong OdysseyHow Much Wealth You Need to Join the Richest 1% Around the WorldFlawed Valuations Threaten $1.7 Trillion Private Credit BoomThis Is Where New Migrants Are Going When They Reach the USSupreme Court Immunity Cas