During its latest rebalance, the Invesco S&P 500 Momentum ETF (SPMO) halved its exposure to the tech sector from 36.6% to 17.2%, and more than doubled the weight in health care to 27.9%. Utilities and real estate went from nearly zero to 11.7% and 7.1% of the portfolios, respectively. That helps explain the fund’s moderate loss of 1.7% in May, even though the tech stocks within the S&P 500 slumped a much steeper 5.7%.

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Still, other momentum strategies involve cross-asset analysis. For example, some equity traders closely watch the Treasury yield curve and use it as a momentum signal for equity entries and exits. A 10-year Treasury yield above the two-year yield generally is a buy signal, whereas a two-year yield trading above the 10-year is a sell signal. Notably, the two-year versus 10-year Treasury yields tend to be a strong predictor of recessions, and also has implications for stock markets.