| SC 13G | 2012-02-14 | LOOMIS SAYLES & CO L P | WESTERN ASSET HIGH INCOME OPPORTUNITY FUND INC. | 24,939,742 | 8.8% | EDGAR |
| SC 13G/A | 2012-01-20 | FIRST TRUST PORTFOLIOS LP | WESTERN ASSET HIGH INCOME OPPORTUNITY FUND INC. | 11,010,556 | 14.6% | EDGAR |
| SC 13G/A | 2011-02-14 | LOOMIS SAYLES & CO L P | WESTERN ASSET HIGH INCOME OPPORTUNITY FUND INC. | 4,567,875 | 6.1% | EDGAR |
| SC 13G/A | 2011-02-01 | FIRST TRUST PORTFOLIOS LP | WESTERN ASSET HIGH INCOME OPPORTUNITY FUND INC. | 8,673,070 | 11.6% | EDGAR |
| SC 13G/A | 2010-10-07 | FIRST TRUST PORTFOLIOS LP | WESTERN ASSET HIGH INCOME OPPORTUNITY FUND INC. | 7,750,831 | 10.4% | EDGAR |
| SC 13G/A | 2010-02-16 | LOOMIS SAYLES & CO L P | WESTERN ASSET HIGH INCOME OPPORTUNITY FUND INC. | 4,597,875 | 6.2% | EDGAR |
| SC 13G/A | 2010-01-20 | FIRST TRUST PORTFOLIOS LP | WESTERN ASSET HIGH INCOME OPPORTUNITY FUND INC. | 6,741,089 | 9.1% | EDGAR |
| SC 13G/A | 2009-02-13 | LOOMIS SAYLES & CO L P | WESTERN ASSET HIGH INCOME OPPORTUNITY FUND INC. | 4,882,975 | 6.6% | EDGAR |
| SC 13G/A | 2009-01-23 | FIRST TRUST PORTFOLIOS LP | WESTERN ASSET HIGH INCOME OPPORTUNITY FUND INC. | 5,116,548 | 6.9% | EDGAR |
| SC 13G/A | 2008-02-14 | LOOMIS SAYLES & CO L P | WESTERN ASSET HIGH INCOME OPPORTUNITY FUND INC. | 4,987,075 | 6.5% | EDGAR |
| SC 13G/A | 2008-02-12 | FIRST TRUST PORTFOLIOS LP | WESTERN ASSET HIGH INCOME OPPORTUNITY FUND INC. | 6,103,189 | 7.9% | EDGAR |
| SC 13G/A | 2007-02-14 | LOOMIS SAYLES & CO L P | WESTERN ASSET HIGH INCOME OPPORTUNITY FUND INC. | 4,471,725 | 6.0% | EDGAR |
| SC 13G | 2007-01-26 | FIRST TRUST PORTFOLIOS LP | WESTERN ASSET HIGH INCOME OPPORTUNITY FUND INC. | 6,141,062 | 8.3% | EDGAR |
| SC 13G | 2006-02-13 | LOOMIS SAYLES & CO L P | HIGH INCOME OPPORTUNITY FUND INC | 4,512,825 | 6.1% | EDGAR |