SK hynix’s retreat from a planned US listing of Solidigm has sent a warning to Korean conglomerates eyeing Wall Street: Seoul’s tougher scrutiny of duplicate listings could derail their global fundraising ambitions. The chipmaker said Oct. 23 it had suspended plans to list its US flash memory subsidiary on the Nasdaq, shelving a potential blockbuster offering that could have valued Solidigm at up to $150 billion. While SK hynix cited market conditions, the decision followed mounting shareholder