Portolan Capital 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
ABIOMED, INC.	COM	003654100	7,798	46,254	SH		SOLE		46,254	0	0
ABRAXAS PETROLEUM CORPORATION	COM	003830106	8,705	4,630,420	SH		SOLE		4,630,420	0	0
ADOBE SYSTEMS, INC.	COM	00724F101	2,554	17,117	SH		SOLE		17,117	0	0
ALARM.COM HOLDINGS, INC.	COM	011642105	960	21,238	SH		SOLE		21,238	0	0
ALCOA CORPORATION	COM	013872106	1,701	36,488	SH		SOLE		36,488	0	0
ALPHABET, INC.	COM	02079K107	11,718	12,218	SH		SOLE		12,218	0	0
ALTISOURCE RESIDENTIAL CORPORATION	COM	02153W100	569	51,186	SH		SOLE		51,186	0	0
AMBARELLA, INC.	COM	G037AX101	7,530	153,644	SH		SOLE		153,644	0	0
ANGIODYNAMICS, INC.	COM	03475V101	3,305	193,416	SH		SOLE		193,416	0	0
ANIKA THERAPEUTICS, INC.	COM	035255108	845	14,566	SH		SOLE		14,566	0	0
APPLIED OPTOELECTRONICS, INC.	COM	03823U102	858	13,261	SH		SOLE		13,261	0	0
APPTIO, INC.	COM	03835C108	12,932	700,163	SH		SOLE		700,163	0	0
ARDMORE SHIPPING CORPORATION	COM	Y0207T100	3,920	475,166	SH		SOLE		475,166	0	0
AXON ENTERPRISE, INC.	COM	05464C101	6,837	301,584	SH		SOLE		301,584	0	0
AXT, INC.	COM	00246W103	3,203	350,004	SH		SOLE		350,004	0	0
BILL BARRETT CORPORATION	COM	06846N104	2,586	602,881	SH		SOLE		602,881	0	0
BIO-RAD LABORATORIES, INC.	COM	090572207	17,246	77,607	SH		SOLE		77,607	0	0
BOINGO WIRELESS, INC.	COM	09739C102	26,724	1,250,550	SH		SOLE		1,250,550	0	0
BOX, INC.	COM	10316T104	14,283	739,284	SH		SOLE		739,284	0	0
CALAVO GROWERS, INC.	COM	128246105	16,645	227,394	SH		SOLE		227,394	0	0
CALLIDUS SOFTWARE, INC.	COM	13123E500	24,092	977,353	SH		SOLE		977,353	0	0
CAPITAL SENIOR LIVING CORPORATION	COM	140475104	1,809	144,162	SH		SOLE		144,162	0	0
CARBONITE, INC.	COM	141337105	19,657	893,522	SH		SOLE		893,522	0	0
CARE.COM, INC.	COM	141633107	24,544	1,544,592	SH		SOLE		1,544,592	0	0
CARROLS RESTAURANT GROUP, INC.	COM	14574X104	561	51,431	SH		SOLE		51,431	0	0
CASELLA WASTE SYSTEMS, INC.	COM	147448104	29,958	1,593,492	SH		SOLE		1,593,492	0	0
CENTRAL GARDEN & PET COMPANY	COM	153527106	8,314	214,068	SH		SOLE		214,068	0	0
CITIZENS FINANCIAL GROUP, INC.	COM	174610105	2,723	71,912	SH		SOLE		71,912	0	0
COMERICA INCORPORATED	COM	200340107	3,505	45,959	SH		SOLE		45,959	0	0
CONNS, INC.	COM	208242107	3,531	125,433	SH		SOLE		125,433	0	0
COOPER TIRE & RUBBER CO.	COM	216831107	3,480	93,057	SH		SOLE		93,057	0	0
COSTAMARE, INC.	COM	Y1771G102	3,166	512,363	SH		SOLE		512,363	0	0
COTT CORP.	COM	22163N106	13,440	895,388	SH		SOLE		895,388	0	0
COVENANT TRANSPORTATION GROUP, INC.	COM	22284P105	9,332	322,031	SH		SOLE		322,031	0	0
DASEKE, INC.	COM	23753F107	13,510	1,035,240	SH		SOLE		1,035,240	0	0
DEVON ENERGY CORPORATION	COM	25179M103	11,442	311,680	SH		SOLE		311,680	0	0
EBIX, INC.	COM	278715206	12,314	188,720	SH		SOLE		188,720	0	0
ECHO GLOBAL LOGISTICS, INC.	COM	27875T101	10,842	575,158	SH		SOLE		575,158	0	0
ELECTRONIC ARTS	COM	285512109	2,794	23,670	SH		SOLE		23,670	0	0
EMCORE CORPORATION	COM	290846203	7,162	873,474	SH		SOLE		873,474	0	0
EURONET WORLDWIDE, INC.	COM	298736109	9,549	100,739	SH		SOLE		100,739	0	0
EXTRACTION OIL & GAS, INC.	COM	30227M105	14,541	944,842	SH		SOLE		944,842	0	0
FABRINET	COM	G3323L100	10,287	277,588	SH		SOLE		277,588	0	0
FACEBOOK, INC.	COM	30303M102	7,875	46,088	SH		SOLE		46,088	0	0
FARMERS BROTHERS CO.	COM	307675108	7,825	238,204	SH		SOLE		238,204	0	0
FIFTH THIRD BANCORP	COM	316773100	7,491	267,721	SH		SOLE		267,721	0	0
FIVE BELOW, INC.	COM	33829M101	955	17,399	SH		SOLE		17,399	0	0
FIVE9, INC.	COM	338307101	887	37,128	SH		SOLE		37,128	0	0
GENESCO, INC.	COM	371532102	2,626	98,717	SH		SOLE		98,717	0	0
GODADDY.COM, INC.	COM	380237107	11,112	255,399	SH		SOLE		255,399	0	0
GROUPON, INC.	COM	399473107	4,004	770,009	SH		SOLE		770,009	0	0
GULFPORT ENERGY CORPORATION	COM	402635304	13,646	951,577	SH		SOLE		951,577	0	0
HALCON RESOURCES CORPORATION	COM	40537Q605	3,266	480,256	SH		SOLE		480,256	0	0
HORTONWORKS, INC.	COM	440894103	20,316	1,198,574	SH		SOLE		1,198,574	0	0
HUBSPOT, INC.	COM	443573100	1,041	12,390	SH		SOLE		12,390	0	0
INPHI CORPORATION	COM	45772F107	3,743	94,315	SH		SOLE		94,315	0	0
INSTRUCTURE, INC.	COM	45781U103	9,606	289,788	SH		SOLE		289,788	0	0
INTERNAP CORPORATION	COM	45885A300	3,904	897,573	SH		SOLE		897,573	0	0
J B HUNT TRANSPORT SERVICES, INC.	COM	445658107	5,970	53,744	SH		SOLE		53,744	0	0
KAPSTONE PAPER AND PACKAGING CORPORATION	COM	48562P103	7,372	343,062	SH		SOLE		343,062	0	0
KNIGHT-SWIFT TRANSPORTATION HOLDINGS, INC.	COM	499049104	9,636	231,903	SH		SOLE		231,903	0	0
KVH INDUSTRIES, INC.	COM	482738101	1,929	161,396	SH		SOLE		161,396	0	0
LENDINGTREE, INC.	COM	52603B107	8,195	33,524	SH		SOLE		33,524	0	0
LKQ CORPORATION	COM	501889208	6,256	173,838	SH		SOLE		173,838	0	0
MACOM TECHNOLOGY SOLUTIONS	COM	55405Y100	3,695	82,821	SH		SOLE		82,821	0	0
MATCH GROUP, INC.	COM	57665R106	12,309	530,777	SH		SOLE		530,777	0	0
MAXWELL TECHNOLOGIES, INC.	COM	577767106	1,183	230,699	SH		SOLE		230,699	0	0
MIMECAST LIMITED	COM	G14838109	5,270	185,420	SH		SOLE		185,420	0	0
MINDBODY, INC.	COM	60255W105	4,954	191,649	SH		SOLE		191,649	0	0
NANOSTRING TECHNOLOGIES, INC.	COM	63009R109	1,836	113,639	SH		SOLE		113,639	0	0
NEVRO CORP.	COM	64157F103	5,091	56,017	SH		SOLE		56,017	0	0
NEW RELIC, INC.	COM	64829B100	4,732	95,026	SH		SOLE		95,026	0	0
NOMAD FOODS LIMITED	COM	G6564A105	14,450	991,733	SH		SOLE		991,733	0	0
NUANCE COMMUNICATIONS, INC.	COM	67020Y100	1,068	67,914	SH		SOLE		67,914	0	0
NUTANIX, INC.	COM	67059N108	16,359	730,660	SH		SOLE		730,660	0	0
OCLARO, INC.	COM	67555N206	4,048	469,083	SH		SOLE		469,083	0	0
ON DECK CAPITAL, INC.	COM	682163100	7,327	1,568,976	SH		SOLE		1,568,976	0	0
PACKAGING CORPORATION OF AMERICA	COM	695156109	2,646	23,077	SH		SOLE		23,077	0	0
PACWEST BANCORP	COM	695263103	6,050	119,788	SH		SOLE		119,788	0	0
PAYPAL HOLDINGS, INC.	COM	70450Y103	7,418	115,849	SH		SOLE		115,849	0	0
PENSARE ACQUISITION CORP.	OTHER	70957E204	2,876	278,460	SH		SOLE		278,460	0	0
PREFERRED BANK	COM	740367404	2,145	35,543	SH		SOLE		35,543	0	0
PRIMO WATER CORPORATION	COM	74165N105	10,625	896,588	SH		SOLE		896,588	0	0
QAD, INC.	COM	74727D306	4,172	121,449	SH		SOLE		121,449	0	0
QUALYS, INC.	COM	74758T303	16,225	313,227	SH		SOLE		313,227	0	0
RAPID7, INC.	COM	753422104	6,348	360,700	SH		SOLE		360,700	0	0
REALPAGE, INC.	COM	75606N109	6,810	170,677	SH		SOLE		170,677	0	0
RED LION HOTELS CORPORATION	COM	756764106	3,081	356,229	SH		SOLE		356,229	0	0
RESOLUTE ENERGY CORPORATION	COM	76116A306	15,433	519,795	SH		SOLE		519,795	0	0
RH	COM	74967X103	1,810	25,739	SH		SOLE		25,739	0	0
RINGCENTRAL, INC.	COM	76680R206	6,496	155,604	SH		SOLE		155,604	0	0
RYERSON HOLDING CORPORATION	COM	783754104	9,558	880,957	SH		SOLE		880,957	0	0
SCORPIO TANKERS, INC.	COM	Y7542C106	5,638	1,643,847	SH		SOLE		1,643,847	0	0
SKECHERS USA, INC.	COM	830566105	14,995	597,652	SH		SOLE		597,652	0	0
SLM CORPORATION	COM	78442P106	26,014	2,268,029	SH		SOLE		2,268,029	0	0
SMART & FINAL STORES, INC.	COM	83190B101	7,722	983,750	SH		SOLE		983,750	0	0
SPIRIT AIRLINES, INC.	COM	848577102	764	22,870	SH		SOLE		22,870	0	0
SQUARE, INC.	COM	852234103	2,359	81,879	SH		SOLE		81,879	0	0
STAMPS.COM, INC.	COM	852857200	3,900	19,243	SH		SOLE		19,243	0	0
SVB FINANCIAL GROUP	COM	78486Q101	6,585	35,199	SH		SOLE		35,199	0	0
SYSTEMAX, INC.	COM	871851101	7,049	266,698	SH		SOLE		266,698	0	0
TELENAV, INC.	COM	879455103	393	61,960	SH		SOLE		61,960	0	0
TRITON INTERNATIONAL LIMITED	COM	G9078F107	4,122	123,870	SH		SOLE		123,870	0	0
U.S. AUTO PARTS NETWORK, INC.	COM	90343C100	6,902	2,388,235	SH		SOLE		2,388,235	0	0
UNITED THERAPEUTICS CORPORATION	COM	91307C102	5,413	46,189	SH		SOLE		46,189	0	0
USA TRUCK, INC.	COM	902925106	9,941	707,579	SH		SOLE		707,579	0	0
VIRTUSA CORPORATION	COM	92827P102	4,411	116,743	SH		SOLE		116,743	0	0
VOYA FINANCIAL, INC.	COM	929089100	1,971	49,415	SH		SOLE		49,415	0	0
WINTRUST FINANCIAL CORPORATION	COM	97650W108	4,083	52,134	SH		SOLE		52,134	0	0
WIX.COM LTD.	COM	M98068105	6,469	90,036	SH		SOLE		90,036	0	0
YELP, INC.	COM	985817105	6,903	159,424	SH		SOLE		159,424	0	0