SoftBank surges as investors rush back into tech stocks
Gains for OpenAI and Arm investor help Nikkei 225 to record high after holiday closure
Gains for OpenAI and Arm investor help Nikkei 225 to record high after holiday closure

Japanese conglomerate reports turnaround from loss a year earlier

Japanese group records $45bn gain on holding in ChatGPT maker over its financial year

Japanese group has suffered from recent share falls and a negative outlook from rating agency S&P

Masayoshi Son faces investor nerves with massive spending on AI investments

Retail investors alarmed by bet on further investment in OpenAI

Investors’ bet on AI boom and Tokyo’s ability to withstand trade turmoil buoy shares