The Securities and Exchange Commission has not necessarily reviewed the information in this filing and has not determined if it is accurate and complete.
The reader should not assume that the information is accurate and complete.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
FORM 13F

FORM 13F INFORMATION TABLE
OMB APPROVAL
OMB Number: 3235-0006
Estimated average burden
hours per response: 23.8
COLUMN 1 COLUMN 2 COLUMN 3 COLUMN 4 COLUMN 5 COLUMN 6 COLUMN 7 COLUMN 8
VALUE SHRS OR SH/ PUT/ INVESTMENT OTHER VOTING AUTHORITY
NAME OF ISSUER TITLE OF CLASS CUSIP (x$1000) PRN AMT PRN CALL DISCRETION MANAGER SOLE SHARED NONE
Albany Molecular Research Conv CONV 012423AA7 8,948 6,400,000 PRN   SOLE   6,400,000 0 0
Integra Life Sciences Conv Sr CONV 457985AK5 3,343 2,750,000 PRN   SOLE   2,750,000 0 0
NuVasive Conv Sr Notes CONV 670704AC9 21,126 16,635,000 PRN   SOLE   16,635,000 0 0
WebMD Health Conv Sr Notes CONV 94770VAF9 3,619 3,555,000 PRN   SOLE   3,555,000 0 0
ACI Worldwide COM 004498101 9,779 398,000 SH   SOLE   398,000 0 0
ANSYS COM 03662Q105 10,478 114,842 SH   SOLE   114,842 0 0
Abaxis COM 002567105 4,170 81,000 SH   SOLE   81,000 0 0
Acxiom COM 005125109 6,215 353,500 SH   SOLE   353,500 0 0
Advisory Board COM 00762W107 16,584 303,355 SH   SOLE   303,355 0 0
AeroVironment COM 008073108 14,230 545,630 SH   SOLE   545,630 0 0
Albany Molecular Research COM 012423109 20,084 993,280 SH   SOLE   993,280 0 0
Allscripts COM 01988P108 4,009 293,050 SH   SOLE   293,050 0 0
AngioDynamics COM 03475V101 1,378 84,000 SH   SOLE   84,000 0 0
Aspen Technology COM 045327103 1,147 25,175 SH   SOLE   25,175 0 0
Berkshire Hathaway New Cl B COM 084670702 238 1,750 SH   SOLE   1,750 0 0
Bio Reference Labs COM 09057G602 14,690 356,120 SH   SOLE   356,120 0 0
Bio Techne COM 09073M104 411 4,175 SH   SOLE   4,175 0 0
Blackbaud COM 09227Q100 7,529 132,210 SH   SOLE   132,210 0 0
Capella Education COM 139594105 1,301 24,250 SH   SOLE   24,250 0 0
Cepheid COM 15670R107 20,940 342,430 SH   SOLE   342,430 0 0
Cerner COM 156782104 2,162 31,300 SH   SOLE   31,300 0 0
Charles River Labs COM 159864107 10,597 150,650 SH   SOLE   150,650 0 0
Cognex COM 192422103 41,750 867,975 SH   SOLE   867,975 0 0
CommVault Systems COM 204166102 1,484 35,000 SH   SOLE   35,000 0 0
Computer Programs & Systems COM 205306103 3,341 62,550 SH   SOLE   62,550 0 0
Costar Group COM 22160N109 755 3,750 SH   SOLE   3,750 0 0
Dorman Products COM 258278100 5,031 105,560 SH   SOLE   105,560 0 0
F5 Networks COM 315616102 2,612 21,700 SH   SOLE   21,700 0 0
FactSet Research System COM 303075105 36,734 226,040 SH   SOLE   226,040 0 0
Forrester Research COM 346563109 16,039 445,287 SH   SOLE   445,287 0 0
Fortinet COM 34959E109 13,194 319,240 SH   SOLE   319,240 0 0
Forward Air COM 349853101 3,889 74,415 SH   SOLE   74,415 0 0
Franklin Electric COM 353514102 13,912 430,320 SH   SOLE   430,320 0 0
Genesee & Wyoming Class A COM 371559105 943 12,375 SH   SOLE   12,375 0 0
Gentex COM 371901109 30,382 1,850,280 SH   SOLE   1,850,280 0 0
HMS Holdings COM 40425J101 22,429 1,306,290 SH   SOLE   1,306,290 0 0
Haemonetics COM 405024100 27,840 673,116 SH   SOLE   673,116 0 0
Healthcare Services Grp COM 421906108 6,519 197,232 SH   SOLE   197,232 0 0
Healthways COM 422245100 9,890 825,550 SH   SOLE   825,550 0 0
Hologic COM 436440101 38,198 1,003,635 SH   SOLE   1,003,635 0 0
Huron Consulting Grp COM 447462102 11,391 162,526 SH   SOLE   162,526 0 0
ICON PLC COM G4705A100 50,743 753,985 SH   SOLE   753,985 0 0
ID Systems COM 449489103 177 29,000 SH   SOLE   29,000 0 0
IDEXX Laboratories COM 45168D104 34,003 530,136 SH   SOLE   530,136 0 0
IPC Healthcare COM 44984A105 16,546 298,715 SH   SOLE   298,715 0 0
IPG Photonic COM 44980X109 4,259 50,000 SH   SOLE   50,000 0 0
Illumina COM 452327109 40,964 187,600 SH   SOLE   187,600 0 0
Integra Lifesciences COM 457985208 472 7,000 SH   SOLE   7,000 0 0
Jack Henry & Associates COM 426281101 24,681 381,473 SH   SOLE   381,473 0 0
LKQ COM 501889208 32,023 1,058,798 SH   SOLE   1,058,798 0 0
Lindsay COM 535555106 2,637 30,000 SH   SOLE   30,000 0 0
Linear Tech COM 535678106 2,048 46,300 SH   SOLE   46,300 0 0
Manhattan Associates COM 562750109 80,138 1,343,475 SH   SOLE   1,343,475 0 0
Mednax COM 58502b106 19,530 263,530 SH   SOLE   263,530 0 0
Meridian Bioscience COM 589584101 1,099 58,950 SH   SOLE   58,950 0 0
Merit Medical Systems COM 589889104 6,640 308,250 SH   SOLE   308,250 0 0
Morningstar COM 617700109 14,973 188,220 SH   SOLE   188,220 0 0
National Instruments COM 636518102 2,086 70,800 SH   SOLE   70,800 0 0
Nice Systems COM 653656108 23,185 364,605 SH   SOLE   364,605 0 0
NuVasive COM 670704105 329 6,950 SH   SOLE   6,950 0 0
Quaker Chemical COM 747316107 5,637 63,450 SH   SOLE   63,450 0 0
ResMed COM 761152107 32,778 581,480 SH   SOLE   581,480 0 0
SEI Investments COM 784117103 31,717 646,880 SH   SOLE   646,880 0 0
SM Energy COM 78454L100 263 5,700 SH   SOLE   5,700 0 0
Thoratec COM 885175307 1,654 37,100 SH   SOLE   37,100 0 0
Trimble Navigation COM 896239100 10,905 464,830 SH   SOLE   464,830 0 0
VCA Antech COM 918194101 1,132 20,800 SH   SOLE   20,800 0 0
Valeant Pharmaceuticals Int'l COM 91911k102 78,708 354,303 SH   SOLE   354,303 0 0
Verint Systems COM 92343x100 28,892 475,635 SH   SOLE   475,635 0 0
Wright Medical COM 98235T107 1,335 50,850 SH   SOLE   50,850 0 0
Zebra Technologies COM 989207105 30,971 278,890 SH   SOLE   278,890 0 0
El Paso Conv Pfd PFD 283678209 201 3,600 SH   SOLE   3,600 0 0