From Econoday calendar:

"Results are rather soft for the monthly 30-year bond auction, where coverage of 2.23 was the lowest since November and the bidding somewhat sloppy, pulling up the awarded high yield to to a tail at 2.938 percent, about a half of a basis point above the 1:00 bid. Demand from end investors was lukewarm, with non-dealers taking down just 70 percent of the $12 billion Treasury offering, their smallest share since November. The 2.938 percent high yield was 23.2 basis points below last month's auction rate, where the 3.170 percent high yield was the highest awarded at a 30-year bond auction since September 2014."

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