I’m in the funding markets around this stuff. Nobody took this into account. It’s more for PR with government and potential hires (and maybe some corporate marketing).
Softbank's rally began in Japanese markets on 3 September and American markets on 4 September. OpenAI announced on 8 September. When OpenAI delayed its IPO plans on 13 September, Softbank sank back to its 7 September level [1].
[1] https://asia.nikkei.com/business/markets/softbank-group-plun...