Unless 3.6% unemployment is the new normal, the central bank has more tightening to do.

The ICE risk matching auction, which matches buyers and sellers of the same corporate bond or list of bonds to determine the best price for the transaction, was reworked and went live in recent months after years of being dormant.

Municipal securities issued for Brightline, the privately-run passenger rail company, have returned as much as about 20% this year, far out pacing a 5.5% gain for high-yield municipal bonds.