Debt Ceiling Deal Doubts Rise - USA Default Risk Hasn't Done This Since Lehman

The US Treasury Bill market remains notably inverted around the uncertain timing of the US debt limit debacle.
As Bloomberg reports, while Treasury bills maturing in October continue underperforming against November and December securities, the market has a murky view on the drop-dead date for the U.S. debt ceiling.
At the start of last week, concerns shifted to early October after the Treasury said in its 3Q refunding statement that it expects to be able to fund the govt through the end of September.