No; As the datapoint's name, "Households and non-profits" suggests, companies are excluded.

This is because the net worth of a company is very different to it's "(stock market) value" as most people know it. The market cap of a company's stock is heavily inflated by financial speculation.

However, the actual net worth of a company (assets minus liabilities) is still a common measurement, usually referred to as "Shareholder equity" or "book value".

For Apple, this is ~$118 Billion, compared to it's market cap of ~$902 Billion.

For Amazon, this is ~$44 Billion, compared to a market cap of ~$892 Billion.

This data, however, is not published by all companies, making it hard to produce an combined value for all companies in a country.