Pokémon Go’s launch added $10.2 billion to Nintendo’s market value in one week.

Evidence

By July 12, the Financial Times exulted that “speculation has surged over the game’s future power as a cash cow to retailers and other cravers of footfall.” Nintendo shares were up 52 percent, adding $10.2 billion to its market capitalization. — Shoshana Zuboff, The Age of Surveillance Capitalism, 989