U.S. Debt Ceiling

Investing: What Brexit means for U.S. investors

The United Kingdom's recent break from the European Union sent shock waves across the pond. In the two trading days following Britain's surprising vote, Standard & Poor's 500-stock index plunged 112 points, or 5 percent. But the broad market measure promptly cut its losses. A week after the vote, the S&P had shaved its Brexit-induced loss to less than 1 percent. A month later, stocks were hitting new highs.

Although there may be more gut-wrenching days ahead, similar geopolitical shocks provide an encouraging blueprint, says Jeff Kleintop, chief global investment strategist at Charles Schwab. He points to the Japan earthquake and related nuclear accident in 2011, the U.S....