Citi Warns of Short-Squeeze Risks as Bearish Bets Rise in Global Stocks

Global equity positioning has weakened as investors adopt a more defensive stance, leading to a rise in short-selling that creates a significant risk of a market snap-back, according to a new analysis from Citi.

Strategists led by David Chew noted that a confluence of factors—including the Federal Reserve's recent rate hike, policy shifts from the Bank of Japan, and rising energy prices—has triggered one of the most synchronized periods of de-risking in the current cycle.

Regional Positioning Reveals Key Risks

Citi's report highlights elevated short exposure across several major markets, creating what the strategists call a "growing asymmetry in positioning outcomes." The most acute risks for a potential short-covering rally are concentrated in Japan's Nikkei, South Korea's KOSPI, and the U.S. S&P 500.

United States

In the U.S., bearish flows have emerged across all major indices, driven primarily by new short positions rather than the liquidation of long holdings. The Russell 2000 small-cap index saw the most significant weekly decline in positioning, with Citi noting that all remaining long positions are currently loss-making.

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Conversely, the S&P 500 has shown more resilience. While approximately 80% of both long and short positions in the index are unprofitable, the larger size of the short book skews the risk toward a squeeze. "Even a modest rebound could trigger incremental buying as short positions unwind," the strategists said.

Europe and Asia

European markets are also showing signs of stress. New short positions have pushed Germany's DAX and the European Banks index into mildly bearish territory. According to Citi, the primary risk in the region is shifting from market direction to "positioning stress," as most long positions are now underwater.

Asia remains the most bearishly positioned region overall. Short books in the Nikkei, KOSPI, and Hang Seng are near historically high levels. With over 40% of short positions in the Nikkei and KOSPI currently unprofitable, Citi warns that "any positive catalyst could trigger a disproportionately large, short-covering rally, particularly in Nikkei."