"As part of its disclosure, Berkshire noted it had omitted at least one holding from the closely followed report, writing that it had requested confidential treatment from the Securities and Exchange Commission." 

https://www.ft.com/content/3f57d48b-1ca3-4d32-8823-1adc144971fb 

Tak co, nakupoval na tajňačku stoletý stařík $TSLA $MSTR $NVDA nebo něco jiného? :D