The election night selloff turned out to be a huge buying opportunity. Companies had been sitting on cash—not investing or hiring. ObamaCare compliance was a nightmare for many business owners. It made them wonder what other big idea from Washington would haunt them in the future. Mrs. Clinton was likely to increase business costs further, while Mr. Trump had vowed to reduce them. Even in the middle of the election-night market panic, the implications for corporate revenue and earnings growth seemed obvious.

The next morning, with the Trump victory confirmed, I told my colleague Martha MacCallum that I would be “buying the stock market with both hands.” Investors began doing the same. U.S. markets have added $6 trillion in value since the election, with investors around the world wanting in on America’s new growth story. The Federal Reserve Bank of Atlanta is now forecasting the third straight quarter of U.S. gross domestic product growth around 3%.