Investors are celebrating the Iran-Israel cease-fire. Here's why they shouldn't breathe easy just yet.

Investors are toasting the nascent Iran-Israel ceasefire by getting out of safe bets such as gold and piling into riskier assets such as stocks and crypto. They may be celebrating too soon. The S&P 500 closed nearly 1% higher on Monday, and futures trading on Tuesday point to further gains. The surge …