S&P 500 now flashing global deflation warning, says strategist

Bloomberg Intelligence strategist Mike McGlone warns that the S&P 500's performance relative to gold is signaling potential global deflation, with the ratio nearing levels seen before significant market pullbacks in 2000 and 2018. This historical correlation, combined with gold matching the S&P 500's total return since 2017 and tightening liquidity, suggests a looming shift from elevated risk assets to safe havens like gold and U.S. Treasuries, potentially signaling a major stock market downturn in 2025-2026.

Analysis

Analysis from Bloomberg Intelligence strategist Mike McGlone indicates a significant deflationary warning for the global economy, derived from the S&P 500's performance relative to gold. The S&P 500/gold ratio is currently approaching levels that preceded major market downturns in 2000 and 2018. This technical signal is amplified by the rare occurrence of gold matching the S&P 500's total return since 2017, an event historically associated with macroeconomic inflection points. McGlone's thesis posits that following a period of substantial liquidity that pushed risk assets to all-time highs in 2025, the current environment of tightening liquidity creates a bearish setup. The continued strength in gold, which is on track to outperform equities again in 2025, further validates this view, suggesting a capital rotation into safe-haven assets like gold and U.S. Treasuries and away from equities and crypto, aligning with McGlone's broader warning of a potential 50% decline in the stock market.

Key Decisions for Investors

• Investors should review long-equity exposure and consider defensive positioning or hedging strategies, as the S&P 500/gold ratio signals a potential market top analogous to the 2000 and 2018 cycles.
• An increased allocation to safe-haven assets, specifically gold and U.S. Treasuries, may be prudent to counter the identified risks of global deflation and a significant stock market pullback.
• Closely monitor the S&P 500/gold ratio and central bank liquidity measures, as these are the primary indicators supporting the bearish thesis for risk assets.
• Exercise caution with high-beta assets, including cryptocurrencies, which are identified as likely underperformers in the event of a capital flight to safety.