No it's not.

Stocks are based on the "valuation" people give them, for whatever reason they want. Check Gazprom's recent stock valuation for a reality check; it doesn't matter what "real goods or services" it keeps providing, everyone who held Gazprom stock, got exactly $0 for it. For further information, check how much company shares are worth.

(Spoiler: they're ALL based on "hype and sunken cost")