To a certain extent this is true, basically the valuation comes down to massive extrapolations based at current stock prices. However, there’s something fairly meaningful at the core of it.
To start with a concrete example, looking at Warren Buffet I find a reference to Berkshire Hathaway. He’s the CEO and he’s a well-known investor, so I’m making an educated guess that a decent chunk of that net worth is BH stock. BH is a huge diversified company, and some of the subsidiaries or divisions of it that I recognize offhand are Geico insurance, Dairy Queen, and World Book Encyclopedia.
A corporation like BH is basically a company doing business by committee - a lot of people can own tiny bits of it, and for important decisions (and hiring key management to take care of less important decisions,) the stockholders get together and vote according to how much of a share they own. A lot of small shareholders don’t worry much about voting their shares, (or giving proxy votes to people they trust to vote wisely with them,) but the shares still have value in that someone who could use them as voting leverage could buy them from the current owner, if the buyer and seller agree on a price. Shares are also important if the corporation decides to give its shareholders a cut of profits, (a dividend,) or if somebody wants to attempt a corporate takeover, (which is sort of an extreme case of doing share voting.)
Now, say Warren Buffet has a 20% share in BH and hasn’t sold any of it for years. But today in wall street, some guy sold some lady a fraction of a percent of share in BH for twenty thousand dollars. Based on that, and possibly an average of other recent trades, they estimate Warren Buffet’s share of the company as being worth so many hundreds of million dollars, or even more.
One thing that this doesn’t usually cover is that if a major investory actually decided to sell out of his company, the first few trades would inevitably ‘flood the market’ somewhat and drive the price down, so it doesn’t really reflect the amount of cash that a billionaire could raise quickly. It does reflect how much financial power they have, exercised through the company, fairly well I think.
waves to the people whose answers appeared on preview