Bets Against $357 Billion S&P 500 ETF Jump to Highest This Year

  • Short interest in SPY has been steadily rising for two weeks
  • S&P 500 has been fluctuating not far from its all-time high
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Investors are increasing wagers against the S&P 500 by shorting the world’s biggest exchange-traded fund.

With the benchmark U.S. equity gauge oscillating near its all-time high, short interest in the $357 billion SPDR S&P 500 ETF Trust (ticker SPY) has jumped to the highest this year, according to IHS Markit Ltd. data.