The benchmark 10-year Treasury yield fell on Thursday as investors reacted to the latest signs of weakness in the labor market following the the release of a private sector layoff announcement survey.

The yield on the 10-year Treasury was more than 6 basis points lower at 4.089%, as was the 2-year note yield at 3.564%. The 30-year bond yield dropped 5 basis points to 4.686%.

One basis point equals 0.01% and yields and prices move in opposite directions.

Data from Challenger, Gray & Christmas revealed a massive gain in jobs cuts in October, coming in at 153,074 in the period. That’s was nearly triple September’s level, climbing 183% month over month, and 175% higher than the same period a year ago.  It was the highest level of layoffs for any October since 2003 in a year that has been the worst for announced layoffs since 2009, the Challenger survey said.

Bond investors also responded to Wednesday’s oral arguments before the Supreme Court on Trump’s reciprocal tariffs which appeared to signal the high court might rule against the aggressive trade policy.

Supreme Court justices expressed skepticism over the legality of the tariffs against most major trading partners after lower federal courts ruled that Trump lacked the legal authority he claimed under the International Emergency Economic Powers Act to impose higher levies.

“You say tariffs are not taxes, but that’s exactly what they are,” Justice Sonia Sotomayor, one of the court’s liberal members, told Solicitor General D. John Sauer. “They’re generating money from American citizens, revenue,” Sotomayor said.

The fixed income market is also monitoring the government shutdown — now the longest in U.S. history — for signs of a compromise between Democratic and Republican lawmakers to end the stalemate.