SoftBank stock surges to seven-month high after judge OKs Sprint-T-Mobile merger

TOKYO (Reuters) - SoftBank Group Corp stock surged to its highest price in over half a year in Tokyo on Wednesday, after a U.S. federal judge rejected an antitrust challenge to the proposed takeover of subsidiary Sprint Corp by T-Mobile US Inc .The ruling brings the Japanese technology conglomerate a significant step closer to slashing its exposure to a troubled asset at a time when other major bets face investor scepticism, and as it struggles to find backing for a successor to its $100..