Munis were slow to react Wednesday, as the Federal Open Market Committee left rates unchanged. UST yields were firmer up to the two-year mark, and up to 11 basis points weaker after five years. "I was surprised to see pretty good activity before the Fed meeting," Olsan said. Exchange-traded funds saw inflows of $378 million after $935 million of inflows the week prior, per ICI data. "We have no way of knowing how many of the nine voting to keep rates unchanged were of two minds."