It is good to see some large institutions and mutual funds having substantial ownership in Idexx, imho
Justthefacts:

TOP INSTITUTIONAL HOLDERS

Holder Shares % Out Value* Reported
BAMCO INC. 3,945,533 6.69 $182,283,624 30-Jun-09
BLAIR (WILLIAM) & COMPANY, L.L.C. 3,641,130 6.17 $168,220,206 30-Jun-09
NEUBERGER BERMAN GROUP, LLC 3,635,516 6.16 $167,960,839 30-Jun-09
DENT (D.F.) & COMPANY, INC. 2,661,140 4.51 $122,944,668 30-Jun-09
ROYCE & ASSOCIATES, INC. 2,593,498 4.39 $119,819,607 30-Jun-09
Barclays Global Investors UK Holdings Ltd 2,431,625 4.12 $112,341,075 30-Jun-09
PRICE (T.ROWE) ASSOCIATES INC 2,027,900 3.44 $93,688,980 30-Jun-09
VANGUARD GROUP, INC. (THE) 1,963,041 3.33 $90,692,494 30-Jun-09
RUANE, CUNNIFF & GOLDFARB INC. 13,239,807 22.44 $611,679,083 30-Jun-09
MASSACHUSETTS FINANCIAL SERVICES CO - OTHER 1,537,374 2.61 $71,026,678 30-Jun-09


TOP MUTUAL FUND HOLDERS

Holder Shares % Out Value* Reported
SEQUOIA FUND INC 3,646,134 6.18 $126,083,313 31-Mar-09
NEUBERGER & BERMAN GENESIS FUND 2,796,662 4.74 $129,205,784 30-Jun-09
ROYCE PREMIER FUND 1,511,500 2.56 $52,267,670 31-Mar-09
BARON ASSET FUND 1,450,000 2.46 $50,141,000 31-Mar-09
BARON GROWTH FUND 1,225,000 2.08 $42,360,500 31-Mar-09
VANGUARD EXPLORER FUND, INC. 961,760 1.63 $37,797,168 30-Apr-09
BARON SMALL CAP FUND 900,000 1.53 $31,122,000 31-Mar-09
COLUMBIA ACORN FD 665,000 1.13 $22,995,700 31-Mar-09
VANGUARD SMALL-CAP INDEX FUND 663,200 1.12 $22,933,456 31-Mar-09
VANGUARD TOTAL STOCK MARKET INDEX FUND 537,674 .91 $18,592,766 31-Mar-09





http://finance.yahoo.com/q/mh?s=IDXX