| SC 13G/A | 2014-02-12 | PRICE T ROWE ASSOCIATES INC /MD/ | LABORATORY CORP OF AMERICA HOLDINGS | 5,025,770 | 5.7% | EDGAR |
| SC 13G/A | 2014-02-12 | HARRIS ASSOCIATES L P | LABORATORY CORP OF AMERICA HOLDINGS | 5,025,805 | 5.8% | EDGAR |
| SC 13G/A | 2014-02-11 | VANGUARD GROUP INC | LABORATORY CORP OF AMERICA HOLDINGS | 5,957,378 | 6.8% | EDGAR |
| SC 13G/A | 2014-01-29 | BlackRock Inc. | LABORATORY CORP OF AMERICA HOLDINGS | 4,874,899 | 5.6% | EDGAR |
| SC 13G | 2014-01-09 | DAVIS SELECTED ADVISERS | LABORATORY CORP OF AMERICA HOLDINGS | 9,561,830 | 10.9% | EDGAR |
| SC 13G/A | 2013-02-11 | HARRIS ASSOCIATES L P | LABORATORY CORP OF AMERICA HOLDINGS | 6,777,355 | 7.2% | EDGAR |
| SC 13G/A | 2013-02-11 | VANGUARD GROUP INC | LABORATORY CORP OF AMERICA HOLDINGS | 5,709,727 | 6.0% | EDGAR |
| SC 13G/A | 2013-02-07 | PRICE T ROWE ASSOCIATES INC /MD/ | LABORATORY CORP OF AMERICA HOLDINGS | 5,384,685 | 5.6% | EDGAR |
| SC 13G | 2013-01-30 | BlackRock Inc. | LABORATORY CORP OF AMERICA HOLDINGS | 4,776,588 | 5.0% | EDGAR |
| SC 13G/A | 2012-06-08 | BlackRock Inc. | LABORATORY CORP OF AMERICA HOLDINGS | 4,710,146 | 4.9% | EDGAR |
| SC 13G/A | 2012-02-14 | HARRIS ASSOCIATES L P | LABORATORY CORP OF AMERICA HOLDINGS | 8,084,705 | 8.2% | EDGAR |
| SC 13G/A | 2012-02-13 | BlackRock Inc. | LABORATORY CORP OF AMERICA HOLDINGS | 5,526,941 | 5.6% | EDGAR |
| SC 13G/A | 2012-02-10 | PRICE T ROWE ASSOCIATES INC /MD/ | LABORATORY CORP OF AMERICA HOLDINGS | 5,103,781 | 5.1% | EDGAR |
| SC 13G | 2012-02-09 | VANGUARD GROUP INC | LABORATORY CORP OF AMERICA HOLDINGS | 5,410,418 | 5.4% | EDGAR |
| SC 13G | 2011-02-10 | PRICE T ROWE ASSOCIATES INC /MD/ | LABORATORY CORP OF AMERICA HOLDINGS | 5,936,193 | 5.8% | EDGAR |
| SC 13G/A | 2011-02-08 | HARRIS ASSOCIATES L P | LABORATORY CORP OF AMERICA HOLDINGS | 7,405,325 | 7.3% | EDGAR |
| SC 13G/A | 2011-02-07 | BlackRock Inc. | LABORATORY CORP OF AMERICA HOLDINGS | 5,396,457 | 5.3% | EDGAR |
| SC 13G/A | 2010-04-08 | CHIEFTAIN CAPITAL MANAGEMENT, INC. | LABORATORY CORP OF AMERICA HOLDINGS | 3,026,932 | 2.9% | EDGAR |
| SC 13G/A | 2010-02-16 | BRAVE WARRIOR CAPITAL, INC. | LABORATORY CORP OF AMERICA HOLDINGS | 3,026,932 | 2.9% | EDGAR |
| SC 13G/A | 2010-02-12 | GOLDMAN SACHS ASSET MANAGEMENT LP | LABORATORY CORP OF AMERICA HOLDINGS | 45,814 | 0.0% | EDGAR |