In markets for longer-term credit, bond issuance by nonfinancial firms has been relatively strong recently, and spreads between Treasury yields and rates paid by corporate borrowers have narrowed some, though they remain wide. Mortgage rates and spreads have also been reduced by the Federal Reserve's program of purchasing agency debt and agency mortgage-backed securities.
However, in recent weeks, yields on longer-term Treasury securities and fixed-rate mortgages have risen. These increases appear to reflect concerns about large federal deficits but also other causes, including greater optimism about the economic outlook, a reversal of flight-to-quality flows, and technical factors related to the hedging of mortgage holdings.