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
2U INC COM 90214J101 2,404 28,765 SH   OTR 1 28,765 0 0
ABBVIE INC COM 00287Y109 111 1,200 SH   OTR   1,200 0 0
ABBVIE INC COM 00287Y109 140 1,515 SH   OTR 1 1,515 0 0
ACETO CORP NOTE 2.000%11/0 004446AD2 32,724 43,414,000 PRN   OTR 1 43,414,000 0 0
AGILENT TECHNOLOGIES INC COM 00846U101 3,959 64,015 SH   OTR   64,015 0 0
AGILENT TECHNOLOGIES INC COM 00846U101 8,028 129,810 SH   OTR 1 126,405 0 3,405
AIR LEASE CORP CL A 00912X302 11,415 271,970 SH   OTR   271,970 0 0
AIR LEASE CORP CL A 00912X302 19,428 462,897 SH   OTR 1 451,898 0 10,094
ALIGN TECHNOLOGY INC COM 016255101 5,182 15,145 SH   OTR 1 15,145 0 0
ALPHABET INC CAP STK CL A 02079K305 8,019 7,102 SH   OTR 1 4,921 0 220
ALPHABET INC CAP STK CL A 02079K305 1,860 1,647 SH   OTR   1,647 0 0
ALPHABET INC CAP STK CL C 02079K107 25,757 23,087 SH   OTR   23,087 0 0
ALPHABET INC CAP STK CL C 02079K107 45,281 40,587 SH   OTR 1 37,381 0 701
ALTERYX INC COM CL A 02156B103 3,594 94,190 SH   OTR 1 94,190 0 0
AMERICAN EXPRESS CO COM 025816109 527 5,375 SH   OTR   5,375 0 0
AMERICAN EXPRESS CO COM 025816109 98 1,000 SH   OTR 1 0 0 1,000
AMERICAN RLTY CAP PPTYS INC NOTE 3.000% 8/0 02917TAA2 18,388 18,388,000 PRN   OTR 1 18,388,000 0 0
AMERICAN WTR WKS CO INC NEW COM 030420103 15,917 186,430 SH   OTR 1 181,724 0 3,986
AMERICAN WTR WKS CO INC NEW COM 030420103 7,134 83,553 SH   OTR   83,553 0 0
ANTERO MIDSTREAM GP LP COM SHS REPSTG 03675Y103 1,527 80,960 SH   OTR 1 80,960 0 0
ANTERO MIDSTREAM GP LP COM SHS REPSTG 03675Y103 357 18,955 SH   OTR   18,955 0 0
ANTERO MIDSTREAM PARTNERS LP UNT LTD PARTN 03673L103 3,057 103,570 SH   OTR   103,570 0 0
ANTERO MIDSTREAM PARTNERS LP UNT LTD PARTN 03673L103 5,512 186,730 SH   OTR 1 182,305 0 4,425
APPFOLIO INC COM CL A 03783C100 5,021 82,105 SH   OTR 1 82,105 0 0
APPLE INC COM 037833100 1,721 9,297 SH   OTR 1 9,297 0 0
APPTIO INC CL A 03835C108 5,467 151,035 SH   OTR 1 151,035 0 0
AUDENTES THERAPEUTICS INC COM 05070R104 4,312 112,840 SH   OTR 1 112,840 0 0
AVROBIO INC COM 05455M100 2,361 82,665 SH   OTR 1 82,665 0 0
BERKSHIRE HATHAWAY INC DEL CL A 084670108 1,128 4 SH   OTR   4 0 0
BERKSHIRE HATHAWAY INC DEL CL A 084670108 282 1 SH   OTR 1 0 0 0
BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 1,056 5,661 SH   OTR 1 5,611 0 50
BIO TECHNE CORP COM 09073M104 4,470 30,215 SH   OTR 1 30,215 0 0
BLUE BIRD CORP COM 095306106 58,345 2,610,493 SH   OTR 1 2,610,493 0 0
BOEING CO COM 097023105 11,327 33,761 SH   OTR   33,761 0 0
BOEING CO COM 097023105 21,493 64,060 SH   OTR 1 62,012 0 2,048
BOFI HLDG INC COM 05566U108 5,462 133,520 SH   OTR 1 133,520 0 0
BOINGO WIRELESS INC COM 09739C102 6,480 286,845 SH   OTR 1 286,845 0 0
BRISTOL MYERS SQUIBB CO COM 110122108 588 10,617 SH   OTR   10,617 0 0
BRISTOL MYERS SQUIBB CO COM 110122108 148 2,672 SH   OTR 1 2,672 0 0
BROOKFIELD ASSET MGMT INC CL A LTD VT SH 112585104 10,555 260,365 SH   OTR   260,365 0 0
BROOKFIELD ASSET MGMT INC CL A LTD VT SH 112585104 19,794 488,255 SH   OTR 1 479,415 0 8,840
CAVCO INDS INC DEL COM 149568107 5,725 27,571 SH   OTR 1 27,571 0 0
CEDAR FAIR L P DEPOSITRY UNIT 150185106 9,927 157,543 SH   OTR   157,543 0 0
CEDAR FAIR L P DEPOSITRY UNIT 150185106 13,456 213,560 SH   OTR 1 208,140 0 5,420
CHARTER COMMUNICATIONS INC N CL A 16119P108 9,175 31,290 SH   OTR   31,290 0 0
CHARTER COMMUNICATIONS INC N CL A 16119P108 12,813 43,698 SH   OTR 1 42,479 0 1,178
CHEVRON CORP NEW COM 166764100 59 465 SH   OTR   465 0 0
CHEVRON CORP NEW COM 166764100 285 2,255 SH   OTR 1 555 0 0
CLEVELAND CLIFFS INC DBCV 1.500% 1/1 185899AA9 31,255 25,500,000 PRN   OTR 1 25,500,000 0 0
COGNIZANT TECHNOLOGY SOLUTIO CL A 192446102 6,781 85,845 SH   OTR   85,845 0 0
COGNIZANT TECHNOLOGY SOLUTIO CL A 192446102 15,080 190,910 SH   OTR 1 187,735 0 3,175
COLLEGIUM PHARMACEUTICAL INC COM 19459J104 5,433 227,785 SH   OTR 1 227,785 0 0
CROWN CASTLE INTL CORP NEW COM 22822V101 13,268 123,056 SH   OTR   123,056 0 0
CROWN CASTLE INTL CORP NEW COM 22822V101 21,049 195,225 SH   OTR 1 192,525 0 2,700
CROWN HOLDINGS INC COM 228368106 228 5,094 SH   OTR   5,094 0 0
CROWN HOLDINGS INC COM 228368106 6 130 SH   OTR 1 0 0 0
DANAHER CORP DEL COM 235851102 11,388 115,401 SH   OTR   115,401 0 0
DANAHER CORP DEL COM 235851102 20,813 210,910 SH   OTR 1 206,735 0 3,875
DIGITAL RLTY TR INC COM 253868103 8,612 77,185 SH   OTR   77,185 0 0
DIGITAL RLTY TR INC COM 253868103 16,051 143,845 SH   OTR 1 140,445 0 3,400
DOWDUPONT INC COM 26078J100 9,898 150,150 SH   OTR   150,150 0 0
DOWDUPONT INC COM 26078J100 17,014 258,107 SH   OTR 1 252,032 0 6,075
ENOVA INTL INC COM 29357K103 8,531 233,415 SH   OTR 1 233,415 0 0
ENTERPRISE PRODS PARTNERS L COM 293792107 16,167 584,280 SH   OTR   584,280 0 0
ENTERPRISE PRODS PARTNERS L COM 293792107 21,803 787,977 SH   OTR 1 768,343 0 19,474
ETSY INC COM 29786A106 7,154 169,565 SH   OTR 1 169,565 0 0
EVERBRIDGE INC COM 29978A104 7,173 151,270 SH   OTR 1 151,270 0 0
EXXON MOBIL CORP COM 30231G102 612 7,403 SH   OTR 1 7,403 0 0
EXXON MOBIL CORP COM 30231G102 891 10,776 SH   OTR   10,776 0 0
EZCORP INC NOTE 2.125% 6/1 302301AB2 7,465 7,375,000 PRN   OTR 1 7,375,000 0 0
FACEBOOK INC CL A 30303M102 10,261 52,803 SH   OTR   52,803 0 0
FACEBOOK INC CL A 30303M102 19,854 102,170 SH   OTR 1 99,365 0 2,655
FIRST REP BK SAN FRANCISCO C COM 33616C100 1,656 17,110 SH   OTR   17,110 0 0
FIRST REP BK SAN FRANCISCO C COM 33616C100 92 952 SH   OTR 1 952 0 0
GLAXOSMITHKLINE PLC SPONSORED ADR 37733W105 202 5,000 SH   OTR 1 0 0 5,000
GTT COMMUNICATIONS INC COM 362393100 5,654 125,647 SH   OTR 1 125,647 0 0
HANNON ARMSTRONG SUST INFR C COM 41068X100 4,023 203,677 SH   OTR   203,677 0 0
HANNON ARMSTRONG SUST INFR C COM 41068X100 8,284 419,455 SH   OTR 1 412,580 0 6,875
HOLOGIC INC COM 436440101 11,887 299,055 SH   OTR   299,055 0 0
HOLOGIC INC COM 436440101 20,653 519,570 SH   OTR 1 507,105 0 12,465
HORIZON GLOBAL CORP NOTE 2.750% 7/0 44052WAA2 23,919 34,222,000 PRN   OTR 1 34,222,000 0 0
II VI INC COM 902104108 3,978 91,550 SH   OTR 1 91,550 0 0
INOGEN INC COM 45780L104 2,661 14,283 SH   OTR 1 14,283 0 0
INSULET CORP COM 45784P101 6,725 78,470 SH   OTR 1 78,470 0 0
INTERSECT ENT INC COM 46071F103 267 7,122 SH   OTR 1 0 0 7,122
IRHYTHM TECHNOLOGIES INC COM 450056106 4,912 60,545 SH   OTR 1 60,545 0 0
ISHARES TR CORE 1 5 YR USD 46432F859 264 5,370 PRN   OTR 1 5,370 0 0
JOHNSON & JOHNSON COM 478160104 8,907 73,403 SH   OTR   73,403 0 0
JOHNSON & JOHNSON COM 478160104 15,458 127,396 SH   OTR 1 120,631 0 3,510
JPMORGAN CHASE & CO COM 46625H100 14,572 139,848 SH   OTR   139,848 0 0
JPMORGAN CHASE & CO COM 46625H100 25,985 249,380 SH   OTR 1 245,070 0 4,310
LENDINGTREE INC NEW COM 52603B107 2,412 11,282 SH   OTR 1 11,282 0 0
LIGAND PHARMACEUTICALS INC COM NEW 53220K504 6,094 29,414 SH   OTR 1 29,414 0 0
LILLY ELI & CO COM 532457108 699 8,188 SH   OTR 1 8,188 0 0
LILLY ELI & CO COM 532457108 1,404 16,451 SH   OTR   16,451 0 0
MAGELLAN MIDSTREAM PRTNRS LP COM UNIT RP LP 559080106 16,058 232,447 SH   OTR 1 224,199 0 2,928
MAGELLAN MIDSTREAM PRTNRS LP COM UNIT RP LP 559080106 6,778 98,114 SH   OTR   98,114 0 0
MCGRATH RENTCORP COM 580589109 249 3,939 SH   OTR 1 3,939 0 0
MEDIFAST INC COM 58470H101 6,829 42,640 SH   OTR 1 42,640 0 0
MERCK & CO INC COM 58933Y105 48 783 SH   OTR   783 0 0
MERCK & CO INC COM 58933Y105 651 10,730 SH   OTR 1 10,730 0 0
META FINL GROUP INC COM 59100U108 4,793 49,210 SH   OTR 1 49,210 0 0
MICROCHIP TECHNOLOGY INC COM 595017104 15,344 168,700 SH   OTR 1 165,610 0 3,090
MICROCHIP TECHNOLOGY INC COM 595017104 9,345 102,745 SH   OTR   102,745 0 0
MICROSOFT CORP COM 594918104 14,885 150,950 SH   OTR   150,950 0 0
MICROSOFT CORP COM 594918104 27,113 274,950 SH   OTR 1 269,495 0 5,455
NAVISTAR INTL CORP NEW NOTE 4.500%10/1 63934EAQ1 61,767 61,445,000 PRN   OTR 1 61,445,000 0 0
NEW RELIC INC COM 64829B100 4,517 44,905 SH   OTR 1 44,905 0 0
NEXTERA ENERGY INC COM 65339F101 12,565 75,225 SH   OTR   75,225 0 0
NEXTERA ENERGY INC COM 65339F101 20,529 122,910 SH   OTR 1 120,555 0 2,155
NOVARTIS A G SPONSORED ADR 66987V109 14,782 195,687 SH   OTR   195,687 0 0
NOVARTIS A G SPONSORED ADR 66987V109 23,046 305,091 SH   OTR 1 297,966 0 7,085
NUTANIX INC CL A 67059N108 4,701 91,150 SH   OTR 1 91,150 0 0
OSI SYSTEMS INC NOTE 1.250% 9/0 671044AD7 19,593 20,250,000 PRN   OTR 1 20,250,000 0 0
PIMCO ETF TR 0-5 HIGH YIELD 72201R783 619 6,215 PRN   OTR 1 6,215 0 0
PLANET FITNESS INC CL A 72703H101 7,646 174,005 SH   OTR 1 174,005 0 0
POST HLDGS INC COM 737446104 8,555 99,452 SH   OTR   99,452 0 0
POST HLDGS INC COM 737446104 17,960 208,790 SH   OTR 1 205,565 0 3,225
PRA GROUP INC COM 69354N106 3,413 88,545 SH   OTR 1 88,545 0 0
PROCTER AND GAMBLE CO COM 742718109 943 12,080 SH   OTR   12,080 0 0
PROCTER AND GAMBLE CO COM 742718109 1,285 16,459 SH   OTR 1 16,459 0 0
PURE STORAGE INC CL A 74624M102 6,810 285,195 SH   OTR 1 285,195 0 0
RAPID7 INC COM 753422104 5,810 205,900 SH   OTR 1 205,900 0 0
RPM INTL INC COM 749685103 15,306 262,456 SH   OTR   262,456 0 0
RPM INTL INC COM 749685103 25,077 429,995 SH   OTR 1 422,645 0 7,350
SENDGRID INC COM 816883102 3,723 140,370 SH   OTR 1 140,370 0 0
SERVICEMASTER GLOBAL HLDGS I COM 81761R109 12,938 217,551 SH   OTR   217,551 0 0
SERVICEMASTER GLOBAL HLDGS I COM 81761R109 20,434 343,600 SH   OTR 1 337,645 0 5,455
SITEONE LANDSCAPE SUPPLY INC COM 82982L103 5,225 62,225 SH   OTR 1 62,225 0 0
SOLARIS OILFIELD INFRSTR INC COM CL A 83418M103 4,969 347,710 SH   OTR 1 347,710 0 0
SUMMIT MATLS INC CL A 86614U100 5,786 220,425 SH   OTR 1 220,425 0 0
TABULA RASA HEALTHCARE INC COM 873379101 4,851 76,000 SH   OTR 1 76,000 0 0
TELADOC INC COM 87918A105 5,763 99,270 SH   OTR 1 99,270 0 0
TELEFLEX INC COM 879369106 10,395 38,760 SH   OTR 1 37,982 0 698
TELEFLEX INC COM 879369106 6,335 23,621 SH   OTR   23,621 0 0
TREX CO INC COM 89531P105 4,947 79,040 SH   OTR 1 79,040 0 0
TUTOR PERINI CORP NOTE 2.875% 6/1 901109AD0 6,019 6,010,000 PRN   OTR 1 6,010,000 0 0
UNION PAC CORP COM 907818108 850 6,000 SH   SOLE   6,000 0 0
UNISYS CORP NOTE 5.500% 3/0 909214BS6 35,099 23,395,000 PRN   OTR 1 23,395,000 0 0
UNIVAR INC COM 91336L107 6,832 260,375 SH   OTR   260,375 0 0
UNIVAR INC COM 91336L107 13,198 502,955 SH   OTR 1 496,675 0 6,280
US FOODS HLDG CORP COM 912008109 27,277 721,240 SH   OTR 1 709,240 0 12,000
US FOODS HLDG CORP COM 912008109 15,377 406,593 SH   OTR   406,593 0 0
VERIZON COMMUNICATIONS INC COM 92343V104 294 5,842 SH   OTR 1 0 0 4,000
VICI PPTYS INC COM 925652109 7,216 349,610 SH   OTR 1 349,610 0 0
VICI PPTYS INC COM 925652109 2,851 138,110 SH   OTR   138,110 0 0
VISA INC COM CL A 92826C839 5,855 44,205 SH   OTR   44,205 0 0
VISA INC COM CL A 92826C839 11,039 83,345 SH   OTR 1 81,640 0 1,305
WASTE CONNECTIONS INC COM 94106B101 9,294 123,460 SH   OTR   123,460 0 0
WASTE CONNECTIONS INC COM 94106B101 16,300 216,515 SH   OTR 1 211,070 0 5,445
WEB COM GROUP INC NOTE 1.000% 8/1 94733AAA2 57,609 57,758,000 PRN   OTR 1 57,758,000 0 0
WELLS FARGO CO NEW COM 949746101 707 12,755 SH   OTR 1 9,755 0 3,000
ZILLOW GROUP INC CL A 98954M101 8,272 138,438 SH   OTR 1 138,438 0 0