Major equity indexes including the S&P 500 tallied their first record closing highs in months on Friday — but something happened on the way to the closing bell that left a bad taste in some traders’ mouths.

Stocks opened higher Friday after mixed inflation data and news that the U.S. and China are making progress with trade negotiations. However, the main benchmarks turned lower in afternoon trading after President Donald Trump said he is ending trade talks with Canada.

On April 8, when stocks were on the verge of plunging into a bear market, few Wall Street experts were predicting that the market would hit a record high just 80 days later.