Nvidia holds equity stakes in a number of public companies.When companies generate excess profit, it's typical for them to allocate capital to initiatives in sales and marketing, product development, or additional hiring. From time to time, however, businesses will make investments in other companies -- acquiring an equity stake in the process.According to Nvidia's (NVDA 0.53%) most recent 13F filing, the chip powerhouse holds shares in the following public companies: Applied Digital, Arm Holdings, Nebius G ...