The Baa rated bond has just been re-rated by one of the rating agencies and this has the impact of reducing its yield to maturity by 5 basis points. If at the same time there is a general change in interest rates so that yields fall across the whole of the yield curve by 20 basis points (including the rerated bond), what is the new value of the portfolio?

My portfolio Security Face Market Term Coupon Yield to Value Value (years) paid maturity Annually US Treasury Bill $20,000 $19,192 1 0% Corporate Bond $67,500 $60,359.2 8 10% 12.14% Rated Aa Corporate Bond $112,500 $89,968.9 10 12% 16.17% Rated B Corporate Bond $37,500 $39,753.2 5 15% 13.28% Rated Baa Cash $7,500