Retail investors started to favor S&P 500 put options. Then the market surged. - MarketWatch
1. S&P 500 surged 9.5% after Trump’s tariff reversal. 2. Retail traders began buying more put options before the rebound. 3. Increased demand for puts signals fear among less sophisticated investors. 4. Retail trading has exploded due to zero-day-to-expiry options. 5. S&P 500 futures indicated a lower open amidst contrarian trading.