tokyo feb 7 reuters  softbank group corp 9984t on tuesday booked a net loss for octoberdecember with its giant vision fund investment unit staying in the red for the fourth straight quarter as tech portfolio valuations have yet to recover from a global selloff the vision funds investment loss came to 73036 billion yen 552 billion in the latest quarter on top of the combined loss of 73 trillion yen during the first nine months of 2022 at softbank itself the net loss totalled 78342 billion yen compared with a 2905 billion yen profit a year earlier the net loss for octoberdecember was a sharp turnaround from a 3 trillion yen profit softbank reported for julyseptember when its quarterly earnings were buoyed by paring some of its stake in chinas alibaba group holding 9988hk softbank founder and chief executive masayoshi son invested heavily in artificial intelligence and other hightech startups through its vision fund unit in recent years helping the company post a record profit for the year to march 2021 but the vision funds performance was battered by a global tech rout last year amid rising interest rates tensions between the united states and china and russias invasion of ukraine prompting son to radically scale back investment activity