HYF Managed High Yield Plus Fund, Inc.

Managed High Yield Plus Fund Inc. (NYSE: HYF), a closed-end management investment company, today distributed additional portfolio statistics. Managed High Yield Plus Fund Inc. seeks high income and, secondarily, capital appreciation, primarily through investments in lower-rated, income producing debt and related equity securities. Portfolio Credit Statistics as of March 31, 2007 � Credit quality1 � Percentage of total portfolioinvestments Ba/BB and higher 3.6% B/B 70.9� Caa/CCC and lower 22.4� Not rated 0.2� Equity/preferred 0.2� Cash equivalents � 2.7� Total 100.0% 1 The fund is actively managed, and its portfolio composition will vary over time. Credit quality ratings are based upon those assigned by Moody�s Investor Series Inc., unless that rating is unavailable. If so, the default credit quality rating will be from Standard & Poor's; if that is unavailable, an internal rating assigned by the Fund�s advisor will be used. Standard & Poor's ("S&P") is a division of The McGraw-Hill Companies, Inc.