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“Equity investors are beginning to become so concerned about the potential downside for stocks that they are starting to irrationally pay up for short-term protection when longer-term protection is cheaper ” Brian Reynolds  asset class strategist at New York-based Canaccord Genuity  said in a note.
“We expect this one will have a similar outcome ” said  Reynolds .
But much will depend on how the trading session ends   Reynolds  said.
“If it were to close in this fashion  it may lead to a further multi-week pullback in stocks ” said  Reynolds .

U.S. stock pullback stokes fears of more volatility