S&P 500 rally fueled by options hedging; experts warn of potential reversal

ME News reports that on August 6 (UTC+8), the S&P 500’s rally was not driven by improved fundamentals, but rather by hedging and position adjustments? Experts warn that as the “options windfall” fades and technical indicators become overbought, the market may soon return to being tested by fundamentals. Recently, the S&P 500 has staged a remarkable rally, rebounding approximately 6% in just five trading days since the Federal Reserve’s interest rate meeting on July 29. However, for astute investors, the underlying driver of this rally is not a brighter macroeconomic outlook, but a “mechanical” surge fueled by options positioning adjustments. Michael Kramer, founder of Mott Capital Management, noted that this rally has been primarily driven by market makers’ gamma position shifts, a rapid decline in implied volatility (VIX), and a surge in call options. Prior to the Fed’s July decision and key earnings reports, market makers were generally exposed to “negative gamma.” In this environment, market volatility tends to amplify: as prices rise, market makers must buy additional positions to hedge their risk—a “momentum-driven” hedging behavior that inadvertently acts as an accelerator for upward price movement. As the index continued to climb, the market has now entered the “positive gamma” zone. This means market makers’ hedging logic has reversed—they are now reducing positions during rallies. While this dynamic helps dampen volatility, it also signals that the powerful upward momentum previously fueled by hedging is weakening. (Source: ODAILY)