Cortina Asset Management 13F-HR Quarterly holdings report by institutional manager

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
Expires:	Oct 31, 2018
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
AAR CORP	com	000361105	5,195	159,791	SH		SOLE		92,166	0	67,625
ADDUS HOMECARE CORP	com	006739106	10,352	162,793	SH		SOLE		158,784	0	4,009
ADVANCED ENERGY INDUSTRIES	com	007973100	5,548	111,675	SH		SOLE		64,619	0	47,056
AGILYSYS INC	com	00847J105	2,456	116,004	SH		SOLE		65,670	0	50,334
AIR TRANSPORT SERVICES GRP I	com	00922R105	9,104	394,985	SH		SOLE		228,382	0	166,603
ALLEGIANCE BANCSHARES INC	com	01748H107	3,726	110,513	SH		SOLE		62,560	0	47,953
ALTAIR ENGINEERING INC - A	com	021369103	22,564	612,983	SH		SOLE		517,945	0	95,038
AMBER ROAD INC	com	02318Y108	1,140	131,457	SH		SOLE		74,431	0	57,026
AMEDISYS INC	com	023436108	10,274	83,355	SH		SOLE		81,292	0	2,063
AMERISAFE INC	com	03071H100	7,478	125,892	SH		SOLE		122,792	0	3,100
AMPHASTAR PHARMACEUTICALS IN	com	03209R103	5,394	264,004	SH		SOLE		152,265	0	111,739
ANTARES PHARMA INC	com	036642106	3,136	1,034,930	SH		SOLE		585,879	0	449,051
APPFOLIO INC - A	com	03783C100	3,342	42,089	SH		SOLE		24,341	0	17,748
APPIAN CORP	com	03782L101	20,265	588,600	SH		SOLE		501,070	0	87,530
APYX MEDICAL CORP	com	03837C106	4,446	704,606	SH		SOLE		398,857	0	305,749
AQUANTIA CORP	com	03842Q108	4,230	466,850	SH		SOLE		264,312	0	202,538
ARGO GROUP INTERNATIONAL	com	G0464B107	14,422	204,107	SH		SOLE		199,057	0	5,050
ATRICURE INC	com	04963C209	7,722	288,249	SH		SOLE		166,164	0	122,085
AVALARA INC	com	05338G106	22,397	401,459	SH		SOLE		391,580	0	9,879
AXOGEN INC	com	05463X106	3,930	186,613	SH		SOLE		105,642	0	80,971
AXON ENTERPRISE INC	com	05464C101	5,539	101,801	SH		SOLE		58,825	0	42,976
BALCHEM CORP	com	057665200	4,041	43,548	SH		SOLE		42,467	0	1,081
BANCORPSOUTH BANK	com	05971J102	13,312	471,736	SH		SOLE		459,704	0	12,032
BENEFITFOCUS INC	com	08180D106	8,939	180,514	SH		SOLE		104,183	0	76,331
BIO-TECHNE CORP	com	09073M104	215	1,083	SH		SOLE		1,083	0	0
BIODELIVERY SCIENCES INTL	com	09060J106	6,895	1,300,994	SH		SOLE		736,484	0	564,510
BIOTELEMETRY INC	com	090672106	7,423	118,536	SH		SOLE		68,190	0	50,346
BOINGO WIRELESS INC	com	09739C102	7,085	304,347	SH		SOLE		172,292	0	132,055
BRINK'S CO/THE	com	109696104	18,492	245,218	SH		SOLE		239,183	0	6,035
BROOKDALE SENIOR LIVING INC	com	112463104	9,721	1,477,421	SH		SOLE		1,440,941	0	36,480
BURLINGTON STORES INC	com	122017106	6,927	44,210	SH		SOLE		43,112	0	1,098
CACI INTERNATIONAL INC -CL A	com	127190304	10,465	57,492	SH		SOLE		56,062	0	1,430
CALAVO GROWERS INC	com	128246105	16,554	197,422	SH		SOLE		192,546	0	4,876
CARDIOVASCULAR SYSTEMS INC	com	141619106	19,819	512,656	SH		SOLE		421,146	0	91,510
CARDTRONICS PLC - A	com	G1991C105	6,577	184,858	SH		SOLE		180,281	0	4,577
CAREDX INC	com	14167L103	6,905	219,052	SH		SOLE		126,062	0	92,990
CASELLA WASTE SYSTEMS INC-A	com	147448104	9,614	270,374	SH		SOLE		263,683	0	6,691
CASTLIGHT HEALTH INC-B	com	14862Q100	7,483	1,995,554	SH		SOLE		1,129,686	0	865,868
CENTENNIAL RESOURCE DEVELOPMEN	com	15136A102	8,570	974,971	SH		SOLE		818,005	0	156,966
CENTERSTATE BANK CORP	com	15201P109	3,977	167,045	SH		SOLE		96,688	0	70,357
CHART INDUSTRIES INC	com	16115Q308	33,153	366,256	SH		SOLE		321,736	0	44,520
CHEGG INC	com	163092109	6,325	165,934	SH		SOLE		95,490	0	70,444
CHEMBIO DIAGNOSTICS INC	com	163572209	4,521	814,617	SH		SOLE		460,466	0	354,151
CHEMICAL FINANCIAL CORP	com	163731102	12,994	315,701	SH		SOLE		307,876	0	7,825
CHUY'S HOLDINGS INC	com	171604101	4,465	196,074	SH		SOLE		110,917	0	85,157
CODEXIS INC	com	192005106	3,774	183,830	SH		SOLE		104,065	0	79,765
COHERENT INC	com	192479103	4,905	34,609	SH		SOLE		20,156	0	14,453
COLLEGIUM PHARMACEUTICAL INC	com	19459J104	4,264	281,666	SH		SOLE		159,446	0	122,220
COLUMBIA BANKING SYSTEM INC	com	197236102	11,489	351,439	SH		SOLE		342,728	0	8,711
COLUMBIA SPORTSWEAR CO	com	198516106	7,612	73,069	SH		SOLE		71,102	0	1,967
COLUMBUS MCKINNON CORP/NY	com	199333105	7,708	224,410	SH		SOLE		218,155	0	6,255
COOPER-STANDARD HOLDING	com	21676P103	630	13,415	SH		SOLE		13,415	0	0
CRAY INC	com	225223304	9,687	371,873	SH		SOLE		224,279	0	147,594
CUBIC CORP	com	229669106	11,504	204,550	SH		SOLE		204,550	0	0
DULUTH HOLDINGS INC - CL B	com	26443V101	10,334	433,454	SH		SOLE		341,235	0	92,219
DYCOM INDUSTRIES INC	com	267475101	16,427	357,578	SH		SOLE		304,686	0	52,892
EGAIN CORPORATION	com	28225C806	3,436	328,782	SH		SOLE		186,126	0	142,656
EMERGENT BIOSOLUTIONS INC	com	29089Q105	13,628	269,761	SH		SOLE		224,018	0	45,743
ENERGY RECOVERY INC	com	29270J100	4,736	542,530	SH		SOLE		307,126	0	235,404
ENVESTNET INC	com	29404K106	6,197	94,769	SH		SOLE		54,882	0	39,887
EPLUS INC	com	294268107	16,447	185,753	SH		SOLE		181,151	0	4,602
EVOLENT HEALTH INC - A	com	30050B101	18,202	1,446,870	SH		SOLE		1,210,580	0	236,290
EXPONENT INC	com	30214U102	5,521	95,653	SH		SOLE		93,284	0	2,369
FIVE BELOW	com	33829M101	6,920	55,697	SH		SOLE		32,297	0	23,400
FIVE9 INC	com	338307101	18,169	343,917	SH		SOLE		274,201	0	69,716
FLEXION THERAPEUTICS INC	com	33938J106	4,324	346,457	SH		SOLE		196,126	0	150,331
FLOOR & DECOR HOLDINGS INC-A	com	339750101	6,594	159,971	SH		SOLE		156,012	0	3,959
FORMFACTOR INC	com	346375108	7,474	464,500	SH		SOLE		268,417	0	196,083
FORWARD AIR CORP	com	349853101	4,949	76,453	SH		SOLE		44,337	0	32,116
FRESHPET INC	com	358039105	6,246	147,697	SH		SOLE		85,049	0	62,648
GLAUKOS CORP	com	377322102	5,986	76,375	SH		SOLE		43,236	0	33,139
GLU MOBILE INC	com	379890106	8,028	733,850	SH		SOLE		415,422	0	318,428
GRANITE CONSTRUCTION INC	com	387328107	8,862	205,378	SH		SOLE		200,309	0	5,069
GREEN DOT CORP-CLASS A	com	39304D102	5,293	87,263	SH		SOLE		50,454	0	36,809
HANGER INC	com	41043F208	11,840	621,511	SH		SOLE		606,218	0	15,293
HEALTHEQUITY INC	com	42226A107	5,730	77,453	SH		SOLE		44,725	0	32,728
HOME BANCSHARES INC	com	436893200	11,081	630,672	SH		SOLE		615,147	0	15,525
ICF INTERNATIONAL INC	com	44925C103	11,537	151,643	SH		SOLE		147,889	0	3,754
INDEPENDENT BANK GROUP INC	com	45384B106	4,146	80,834	SH		SOLE		45,759	0	35,075
INGEVITY CORP	com	45688C107	24,873	235,520	SH		SOLE		229,688	0	5,832
INPHI CORP	com	45772F107	6,988	159,764	SH		SOLE		92,366	0	67,398
INSULET CORP	com	45784P101	221	2,321	SH		SOLE		2,321	0	0
INTER PARFUMS INC	com	458334109	28,107	370,457	SH		SOLE		361,285	0	9,172
INTRICON CORP	com	46121H109	4,788	190,918	SH		SOLE		108,076	0	82,842
J2 GLOBAL INC	com	48123V102	19,494	225,100	SH		SOLE		219,434	0	5,666
JAMES RIVER GROUP HOLDINGS L	com	G5005R107	14,420	359,779	SH		SOLE		350,753	0	9,026
KADANT INC	com	48282T104	700	7,956	SH		SOLE		7,956	0	0
KINSALE CAPITAL GROUP INC	com	49714P108	12,369	180,382	SH		SOLE		175,934	0	4,448
KORN FERRY	com	500643200	14,087	314,574	SH		SOLE		306,811	0	7,763
KORNIT DIGITAL LTD	com	M6372Q113	7,757	325,943	SH		SOLE		184,510	0	141,433
KRATOS DEFENSE & SECURITY	com	50077B207	13,712	877,291	SH		SOLE		719,678	0	157,613
LHC GROUP INC	com	50187A107	14,572	131,445	SH		SOLE		128,205	0	3,240
LIGAND PHARMACEUTICALS	com	53220K504	5,568	44,289	SH		SOLE		25,487	0	18,802
LIMONEIRA CO	com	532746104	6,257	265,927	SH		SOLE		150,542	0	115,385
LINDSAY CORP	com	535555106	9,749	100,725	SH		SOLE		98,231	0	2,494
LIVEPERSON INC	com	538146101	8,626	297,254	SH		SOLE		171,391	0	125,863
MAMMOTH ENERGY SERVICES INC	com	56155L108	3,158	189,666	SH		SOLE		109,371	0	80,295
MANITEX INTERNATIONAL INC	com	563420108	4,238	553,942	SH		SOLE		313,378	0	240,564
MARINEMAX INC	com	567908108	7,230	377,334	SH		SOLE		213,594	0	163,740
MASTEC INC	com	576323109	16,889	351,121	SH		SOLE		342,565	0	8,556
MATADOR RESOURCES CO	com	576485205	4,330	223,982	SH		SOLE		128,896	0	95,086
MAXLINEAR INC	com	57776J100	4,483	175,586	SH		SOLE		99,399	0	76,187
MELLANOX TECHNOLOGIES LTD	com	M51363113	5,042	42,600	SH		SOLE		41,540	0	1,060
MERCURY SYSTEMS INC	com	589378108	16,796	262,105	SH		SOLE		255,657	0	6,448
MERITOR INC	com	59001k100	7,238	355,661	SH		SOLE		205,888	0	149,773
META FINANCIAL GROUP INC	com	59100U108	4,179	212,356	SH		SOLE		120,215	0	92,141
MIMECAST LTD	com	G14838109	5,897	124,540	SH		SOLE		71,901	0	52,639
MKS INSTRUMENTS INC	com	55306N104	14,753	158,552	SH		SOLE		154,301	0	4,251
MODEL N INC	com	607525102	7,124	406,134	SH		SOLE		229,914	0	176,220
MYRIAD GENETICS INC	com	62855J104	5,121	154,246	SH		SOLE		88,936	0	65,310
NATIONAL VISION HOLDINGS INC	com	63845R107	13,794	438,873	SH		SOLE		427,875	0	10,998
NCR CORPORATION	com	62886E108	21,239	778,258	SH		SOLE		759,015	0	19,243
NEOGEN CORP	com	640491106	4,740	82,599	SH		SOLE		47,947	0	34,652
NEOGENOMICS INC	com	64049M209	6,226	304,297	SH		SOLE		175,381	0	128,916
NEURONETICS INC	com	64131A105	4,617	302,768	SH		SOLE		171,416	0	131,352
NINE ENERGY SERVICE INC	com	65441V101	9,294	410,321	SH		SOLE		400,205	0	10,116
NLIGHT INC	com	65487K100	3,962	177,846	SH		SOLE		100,680	0	77,166
NOODLES & CO	com	65540B105	5,216	767,041	SH		SOLE		434,225	0	332,816
NOVANTA INC	com	67000B104	15,014	177,196	SH		SOLE		172,746	0	4,450
NOVOCURE LTD	com	G6674U108	6,024	125,061	SH		SOLE		72,814	0	52,247
OCEANEERING INTL INC	com	675232102	7,399	469,174	SH		SOLE		457,406	0	11,768
OLLIE'S BARGAIN OUTLET HOLDING	com	681116109	23,782	278,702	SH		SOLE		249,280	0	29,422
OXFORD IMMUNOTEC GLOBAL PLC	com	G6855A103	9,452	548,556	SH		SOLE		310,305	0	238,251
OXFORD INDUSTRIES INC	com	691497309	12,082	160,531	SH		SOLE		156,567	0	3,964
PACIRA PHARMACEUTICALS INC	com	695127100	6,929	182,044	SH		SOLE		105,021	0	77,023
PATTERSON-UTI ENERGY INC	com	703481101	6,596	470,450	SH		SOLE		458,818	0	11,632
PAYLOCITY HOLDING CORP	com	70438V106	12,072	135,347	SH		SOLE		131,958	0	3,389
PETIQ INC	com	71639T106	3,324	105,830	SH		SOLE		59,909	0	45,921
PHOTRONICS INC	com	719405102	5,984	633,200	SH		SOLE		358,456	0	274,744
PINNACLE FINANCIAL PARTNERS	com	72346Q104	6,192	113,198	SH		SOLE		65,706	0	47,492
PLAYAGS INC	com	72814N104	14,648	612,128	SH		SOLE		486,290	0	125,838
PLURALSIGHT INC CLASS A	com	72941B106	7,065	222,586	SH		SOLE		128,486	0	94,100
PRA GROUP INC	com	69354N106	11,892	443,564	SH		SOLE		432,447	0	11,117
PROFIRE ENERGY INC	com	74316X101	2,322	1,297,070	SH		SOLE		733,722	0	563,348
PROPETRO HOLDING CORP	com	74347M108	26,444	1,173,197	SH		SOLE		1,021,246	0	151,951
PURE STORAGE INC - CLASS A	com	74624M102	202	9,293	SH		SOLE		9,293	0	0
QUAKER CHEMICAL CORP	com	747316107	6,015	30,027	SH		SOLE		29,287	0	740
QUANTENNA COMMUNICATIONS INC	com	74766D100	7,623	313,335	SH		SOLE		177,379	0	135,956
RADNET INC	com	750491102	10,914	880,866	SH		SOLE		859,051	0	21,815
RAPID7 INC	com	753422104	7,621	150,580	SH		SOLE		86,826	0	63,754
RBC BEARINGS INC	com	75524B104	11,487	90,327	SH		SOLE		88,060	0	2,267
REALPAGE INC	com	75606N109	20,354	335,381	SH		SOLE		326,366	0	9,015
REXNORD CORP	com	76169B102	5,230	208,050	SH		SOLE		203,778	0	4,272
RINGCENTRAL INC-CLASS A	com	76680R206	239	2,219	SH		SOLE		2,219	0	0
ROGERS CORP	com	775133101	12,470	78,485	SH		SOLE		76,540	0	1,945
ROSETTA STONE INC	com	777780107	4,883	223,461	SH		SOLE		126,502	0	96,959
RPC INC	com	749660106	903	79,181	SH		SOLE		79,181	0	0
RUDOLPH TECHNOLOGIES INC	com	781270103	5,209	228,476	SH		SOLE		129,338	0	99,138
RUSH ENTERPRISES INC CL A	com	781846209	4,185	100,105	SH		SOLE		56,669	0	43,436
SAIA INC	com	78709Y105	6,535	106,963	SH		SOLE		61,730	0	45,233
SAILPOINT TECHNOLOGIES HOLDI	com	78781P105	17,632	613,942	SH		SOLE		531,310	0	82,632
SANDERSON FARMS INC	com	800013104	22,544	170,997	SH		SOLE		166,764	0	4,233
SEACOAST BANKING CORP/FL	com	811707801	5,397	204,808	SH		SOLE		115,921	0	88,887
SIMPLY GOOD FOODS CO	com	82900L102	13,555	658,342	SH		SOLE		642,142	0	16,200
SKYLINE CHAMPION CORP	com	830830105	8,469	445,746	SH		SOLE		257,740	0	188,006
SOTHEBY'S	com	835898107	13,670	362,121	SH		SOLE		352,944	0	9,177
SOUTH STATE CORP	com	840441109	8,945	130,896	SH		SOLE		127,605	0	3,291
SPARTAN MOTORS INC	com	846819100	4,977	563,601	SH		SOLE		319,043	0	244,558
SPIRIT AIRLINES INC	com	848577102	7,714	145,933	SH		SOLE		84,162	0	61,771
STAAR SURGICAL CO	com	852312305	6,232	182,264	SH		SOLE		104,885	0	77,379
STERLING BANCORP INC	com	85917W102	2,232	220,078	SH		SOLE		124,507	0	95,571
STEVEN MADDEN LTD	com	556269108	22,320	659,586	SH		SOLE		643,040	0	16,546
TABULA RASA HEALTHCARE INC	com	873379101	6,210	110,063	SH		SOLE		107,335	0	2,728
TACTILE SYSTEMS TECHNOLOGY I	com	87357P100	13,826	262,251	SH		SOLE		223,203	0	39,048
TECHTARGET	com	87874R100	5,322	327,127	SH		SOLE		185,175	0	141,952
TERADYNE INC	com	880770102	203	5,088	SH		SOLE		5,088	0	0
TOWER SEMICONDUCTOR LTD	com	M87915274	6,609	399,100	SH		SOLE		230,274	0	168,826
TPI COMPOSITES INC	com	87266J104	8,380	292,799	SH		SOLE		168,981	0	123,818
TRADE DESK INC/THE -CLASS A	com	88339J105	201	1,016	SH		SOLE		1,016	0	0
TRISTATE CAPITAL HLDGS INC	com	89678F100	12,827	627,830	SH		SOLE		613,065	0	14,765
TWILIO INC - A	com	90138F102	258	1,994	SH		SOLE		1,994	0	0
UNDER ARMOUR INC CL C	com	904311206	221	11,698	SH		SOLE		11,698	0	0
VERACYTE INC	com	92337F107	7,514	300,303	SH		SOLE		170,002	0	130,301
VIEWRAY INC	com	92672L107	10,811	1,462,953	SH		SOLE		1,426,718	0	36,235
VOCERA COMMUNICATIONS INC	com	92857F107	5,314	167,994	SH		SOLE		95,099	0	72,895
WEBSTER FINANCIAL CORP	com	947890109	10,756	212,278	SH		SOLE		206,617	0	5,661
WERNER ENTERPRISES INC	com	950755108	6,040	176,878	SH		SOLE		102,145	0	74,733
WINGSTOP INC	com	974155103	17,140	225,437	SH		SOLE		180,011	0	45,426
WORLD FUEL SERVICES CORP	com	981475106	7,592	262,800	SH		SOLE		256,290	0	6,510
MATERIALISE NV SPONSORED ADS	adr	57667T100	5,309	337,275	SH		SOLE		190,928	0	146,347
MIX TELEMATICS LTD SPONSORED A	adr	60688N102	2,654	159,211	SH		SOLE		90,130	0	69,081