ソース:[1] OpenAI Tie-Up Boosts Hitachi Shares, Fuels Japan Tech Rally (https://finance.yahoo.com/news/openai-tie-boo ...)[2] OpenAI Tie-Up Boosts Hitachi Shares, Fuels Japan Tech Rally | Financial Post (https://financialpost.com/pmn/business-pmn/op ...)[3] OpenAI and Hitachi Forge Alliance to Power the Future of AI with Sustainable Infrastructure (https://vertexaisearch.cloud.google.com/groun ...)