There is indirect exposure to Anthropic/OpenAI through all the incestuous partnerships between hyperscalers and NVDA
To make matters worse all the banks, insurers and investment firms in that S&P list are likely in there somewhere too.
I'm sure I'm missing a whole lot more.
In this case, really? Between Nvidia, Microsoft, AMD, Amazon and everyone else in that S&P 500 there's not >50% of OpenAI already? It's not that indirect.
Microsoft alone is 27%.