In 60 Seconds Before CPI Hit, Heavy Trading Drove Mystery Rally

But there was nothing minor about the rally that took hold in the seconds before the better-than-expected inflation number hit the Labor Department’s website.

Stock futures suddenly spiked more than 1%. Trading in Treasury futures surged, pushing benchmark yields lower by about 4 basis points. Those are major moves in such a short period of time — bigger than full-session swings on some days. And they should get scrutinized by regulators, long-time market observers say, even if a leak is only one of several possible explanations for why traders suddenly started buying right before the report was published.

Source: In 60 Seconds Before CPI Hit, Heavy Trading Drove Mystery Rally