A Tony Stark-Inspired Strategy for Beating the Market

His heart was failing. So he upgraded it.

After a weapons test gone wrong, Tony Stark was taken hostage in a dimly-lit cave in Afghanistan—his chest filled with shrapnel that was slowly moving toward his heart.

Faced with that situation, most people would give up.

But Stark engineered a fusion-powered device to keep the shrapnel from killing him.

It did mor…