Cowen Prime Services 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
AT&T INC COM	Stock	00206R102	1	23	SH		SOLE		0	0	1
ABBOTT LABS COM	Stock	002824100	94	1,300	SH		SOLE		0	0	94
ABBVIE INC COM	Stock	00287Y109	74	800	SH		SOLE		0	0	74
ACCURAY INC COM	Stock	004397105	664	194,686	SH		SOLE		0	0	664
ACI WORLDWIDE INC COM	Stock	004498101	623	22,500	SH		SOLE		0	0	623
AEHR TEST SYSTEMS COM	Stock	00760J108	1	600	SH		SOLE		0	0	1
ADVANCED MICRO DEVICES INC COM	Stock	007903107	28	1,500	SH		SOLE		0	0	28
ALIBABA GROUP HLDG LTD SPONSORED ADS	Stock	01609W102	27	200	SH		SOLE		0	0	27
ALPHABET INC CAP STK CL C	Stock	02079K107	145	140	SH		SOLE		0	0	145
ALPHABET INC CAP STK CL A	Stock	02079K305	42	40	SH		SOLE		0	0	42
ALTABA INC COM	Stock	021346101	194	3,356	SH		SOLE		0	0	194
ALTRIA GROUP INC COM	Stock	02209S103	74	1,500	SH		SOLE		0	0	74
AMERICAN ELEC PWR INC COM	Stock	025537101	146	1,950	SH		SOLE		0	0	146
AMERICAN EXPRESS CO COM	Stock	025816109	38	400	SH		SOLE		0	0	38
ANALOG DEVICES INC COM	Stock	032654105	1,142	13,300	SH		SOLE		0	0	1,142
ANDEAVOR LOGISTICS LP COM UNIT LP INT	Stock	03350F106	162	5,000	SH		SOLE		0	0	162
ANNALY CAP MGMT INC COM	Stock	035710409	113	11,500	SH		SOLE		0	0	113
APACHE CORP COM	Stock	037411105	12	450	SH		SOLE		0	0	12
APOLLO GLOBAL MGMT LLC CL A SHS	Stock	037612306	25	1,000	SH		SOLE		0	0	25
APPLE INC COM	Stock	037833100	354	2,245	SH		SOLE		0	0	354
ASPEN AEROGELS INC COM	Stock	04523Y105	1,346	632,100	SH		SOLE		0	0	1,346
ASTRAZENECA PLC SPONSORED ADR	Stock	046353108	2,774	73,040	SH		SOLE		0	0	2,774
BRT APARTMENTS CORP COM	Stock	055645303	115	10,025	SH		SOLE		0	0	115
BANK AMER CORP COM	Stock	060505104	19	760	SH		SOLE		0	0	19
BANK MONTREAL QUE COM	Stock	063671101	49	753	SH		SOLE		0	0	49
BERKSHIRE HATHAWAY INC DEL CL B NEW	Stock	084670702	2,328	11,400	SH		SOLE		0	0	2,328
BLACKSTONE GROUP L P COM UNIT LTD	Stock	09253U108	340	11,400	SH		SOLE		0	0	340
BOINGO WIRELESS INC COM	Stock	09739C102	237	11,500	SH		SOLE		0	0	237
BOSTON OMAHA CORP COM	Stock	101044105	2,541	108,569	SH		SOLE		0	0	2,541
BOVIE MEDICAL CORP COM	Stock	10211F100	2,142	330,550	SH		SOLE		0	0	2,142
BRISTOL MYERS SQUIBB CO COM	Stock	110122108	109	2,100	SH		SOLE		0	0	109
CUI GLOBAL INC COM NEW	Stock	126576206	274	222,433	SH		SOLE		0	0	274
CASTLIGHT HEALTH INC CL B	Stock	14862Q100	4,758	2,192,456	SH		SOLE		0	0	4,758
CATASYS INC COM PAR	Stock	149049504	47	5,000	SH		SOLE		0	0	47
CEVA INC COM	Stock	157210105	537	24,321	SH		SOLE		0	0	537
CHEVRON CORP NEW COM	Stock	166764100	1,072	9,850	SH		SOLE		0	0	1,072
CHROMADEX CORP COM NEW	Stock	171077407	8	2,200	SH		SOLE		0	0	8
CISCO SYS INC COM	Stock	17275R102	4	100	SH		SOLE		0	0	4
CITIGROUP INC COM NEW	Stock	172967424	2	35	SH		SOLE		0	0	2
COCA COLA CO COM	Stock	191216100	47	1,000	SH		SOLE		0	0	47
CORNING INC COM	Stock	219350105	50	1,650	SH		SOLE		0	0	50
CROWN CASTLE INTL CORP NEW COM	Stock	22822V101	2,870	26,420	SH		SOLE		0	0	2,870
DCP MIDSTREAM LP COM UT LTD PTN	Stock	23311P100	42	1,600	SH		SOLE		0	0	42
DXC TECHNOLOGY CO COM	Stock	23355L106	1	16	SH		SOLE		0	0	1
DARDEN RESTAURANTS INC COM	Stock	237194105	25	250	SH		SOLE		0	0	25
DEERE & CO COM	Stock	244199105	224	1,500	SH		SOLE		0	0	224
DELTA AIR LINES INC DEL COM NEW	Stock	247361702	1,202	24,090	SH		SOLE		0	0	1,202
DIGIMARC CORP NEW COM	Stock	25381B101	2,279	157,140	SH		SOLE		0	0	2,279
DOMINION ENERGY INC COM	Stock	25746U109	57	800	SH		SOLE		0	0	57
DOWDUPONT INC COM	Stock	26078J100	4,884	91,327	SH		SOLE		0	0	4,884
DURECT CORP COM	Stock	266605104	42	87,128	SH		SOLE		0	0	42
EOG RES INC COM	Stock	26875P101	26	300	SH		SOLE		0	0	26
EATON VANCE TAX MNGD GBL DV COM	Stock	27829F108	20	2,700	SH		SOLE		0	0	20
EBAY INC COM	Stock	278642103	28	1,000	SH		SOLE		0	0	28
EHEALTH INC COM	Stock	28238P109	17,496	455,387	SH		SOLE		0	0	17,496
ELECTRONICS FOR IMAGING INC COM	Stock	286082102	119	4,800	SH		SOLE		0	0	119
EMERSON ELEC CO COM	Stock	291011104	60	1,000	SH		SOLE		0	0	60
EMPIRE ST RLTY OP L P UNIT LTD PRTNSP	Stock	292102100	183	12,904	SH		SOLE		0	0	183
ENTERPRISE PRODS PARTNERS L COM	Stock	293792107	1,625	66,080	SH		SOLE		0	0	1,625
EVERSPIN TECHNOLOGIES INC COM	Stock	30041T104	25	4,500	SH		SOLE		0	0	25
EXELON CORP COM	Stock	30161N101	904	20,050	SH		SOLE		0	0	904
EXP WORLD HOLDINGS INC COM	Stock	30212W100	4	500	SH		SOLE		0	0	4
EXXON MOBIL CORP COM	Stock	30231G102	387	5,670	SH		SOLE		0	0	387
FORMFACTOR INC COM	Stock	346375108	75	5,295	SH		SOLE		0	0	75
FUSION CONNECT INC COM	Stock	36116X102	1,433	852,700	SH		SOLE		0	0	1,433
GW PHARMACEUTICALS PLC ADS	Stock	36197T103	7	70	SH		SOLE		0	0	7
GSI TECHNOLOGY COM	Stock	36241U106	378	73,583	SH		SOLE		0	0	378
GENERAL ELECTRIC CO COM	Stock	369604103	107	14,070	SH		SOLE		0	0	107
GENOMIC HEALTH INC COM	Stock	37244C101	129	2,000	SH		SOLE		0	0	129
GLOBAL PARTNERS LP COM UNITS	Stock	37946R109	68	4,150	SH		SOLE		0	0	68
GREENSKY INC CL A	Stock	39572G100	19	2,000	SH		SOLE		0	0	19
HCP INC COM	Stock	40414L109	223	8,000	SH		SOLE		0	0	223
HP INC COM	Stock	40434L105	4	200	SH		SOLE		0	0	4
HALLIBURTON CO COM	Stock	406216101	3	100	SH		SOLE		0	0	3
HARMONIC INC COM	Stock	413160102	1,705	361,323	SH		SOLE		0	0	1,705
HARMONIC INC NOTE 4.000 12/0	Stock	413160AB8	2,291	2,175,000	SH		SOLE		0	0	2,291
HELMERICH & PAYNE INC COM	Stock	423452101	38	800	SH		SOLE		0	0	38
HEWLETT PACKARD ENTERPRISE C COM	Stock	42824C109	3	200	SH		SOLE		0	0	3
HIMAX TECHNOLOGIES INC SPONSORED ADR	Stock	43289P106	17	5,000	SH		SOLE		0	0	17
INOVALON HLDGS INC COM CL A	Stock	45781D101	3,220	227,100	SH		SOLE		0	0	3,220
INTEL CORP COM	Stock	458140100	75	1,600	SH		SOLE		0	0	75
INTERMOLECULAR INC COM	Stock	45882D109	3	3,000	SH		SOLE		0	0	3
INTERNATIONAL BUSINESS MACHS COM	Stock	459200101	554	4,872	SH		SOLE		0	0	554
INTERPACE DIAGNOSTICS GROUP COM NEW	Stock	46062X204	1	1,400	SH		SOLE		0	0	1
ITERIS INC COM	Stock	46564T107	4,332	1,161,390	SH		SOLE		0	0	4,332
JPMORGAN CHASE & CO COM	Stock	46625H100	1,383	14,169	SH		SOLE		0	0	1,383
JOHNSON & JOHNSON COM	Stock	478160104	1,208	9,364	SH		SOLE		0	0	1,208
KKR & CO INC CL A	Stock	48251W104	1,573	80,150	SH		SOLE		0	0	1,573
KIMBERLY CLARK CORP COM	Stock	494368103	103	900	SH		SOLE		0	0	103
KINDER MORGAN INC DEL COM	Stock	49456B101	245	15,942	SH		SOLE		0	0	245
KOPIN CORP COM	Stock	500600101	305	305,218	SH		SOLE		0	0	305
LEIDOS HLDGS INC COM	Stock	525327102	3,065	58,145	SH		SOLE		0	0	3,065
LENNAR CORP CL A	Stock	526057104	59	1,500	SH		SOLE		0	0	59
LENNAR CORP CL B	Stock	526057302	1	30	SH		SOLE		0	0	1
LOCKHEED MARTIN CORP COM	Stock	539830109	105	400	SH		SOLE		0	0	105
LOWES COS INC COM	Stock	548661107	31	340	SH		SOLE		0	0	31
LUMINEX CORP DEL COM	Stock	55027E102	5,388	233,162	SH		SOLE		0	0	5,388
MACOM TECH SOLUTIONS HLDGS I COM	Stock	55405Y100	729	50,258	SH		SOLE		0	0	729
MACERICH CO COM	Stock	554382101	11	260	SH		SOLE		0	0	11
MAGELLAN MIDSTREAM PRTNRS LP COM UNIT RP LP	Stock	559080106	1,986	34,800	SH		SOLE		0	0	1,986
MAGNOLIA OIL & GAS CORP CL A	Stock	559663109	1	50	SH		SOLE		0	0	1
MCDONALDS CORP COM	Stock	580135101	117	661	SH		SOLE		0	0	117
MERCK & CO INC COM	Stock	58933Y105	31	400	SH		SOLE		0	0	31
METLIFE INC COM	Stock	59156R108	257	6,250	SH		SOLE		0	0	257
MICROSOFT CORP COM	Stock	594918104	1,343	13,225	SH		SOLE		0	0	1,343
MICROVISION INC DEL COM NEW	Stock	594960304	8	13,700	SH		SOLE		0	0	8
MOBILEIRON INC COM NEW	Stock	60739U204	5,702	1,242,200	SH		SOLE		0	0	5,702
MONDELEZ INTL INC CL A	Stock	609207105	132	3,300	SH		SOLE		0	0	132
MORGAN STANLEY COM NEW	Stock	617446448	1	18	SH		SOLE		0	0	1
NIC INC COM	Stock	62914B100	452	36,200	SH		SOLE		0	0	452
NVE CORP COM NEW	Stock	629445206	808	9,231	SH		SOLE		0	0	808
NATIONAL RESH CORP COM NEW	Stock	637372202	618	16,200	SH		SOLE		0	0	618
NATIONAL RETAIL PPTYS INC COM	Stock	637417106	49	1,000	SH		SOLE		0	0	49
NEOGEN CORP COM	Stock	640491106	627	11,000	SH		SOLE		0	0	627
NEOGENOMICS INC COM NEW	Stock	64049M209	8,414	667,220	SH		SOLE		0	0	8,414
NEW MEDIA INVT GROUP INC COM	Stock	64704V106	1,649	142,500	SH		SOLE		0	0	1,649
NEW RESIDENTIAL INVT CORP COM NEW	Stock	64828T201	60	4,200	SH		SOLE		0	0	60
NOKIA CORP SPONSORED ADR	Stock	654902204	1	166	SH		SOLE		0	0	1
NORTHROP GRUMMAN CORP COM	Stock	666807102	110	450	SH		SOLE		0	0	110
NORTHSTAR REALTY EUROPE CORP COM	Stock	66706L101	16	1,083	SH		SOLE		0	0	16
NOVARTIS A G SPONSORED ADR	Stock	66987V109	9	100	SH		SOLE		0	0	9
NOVO-NORDISK A S ADR	Stock	670100205	150	3,250	SH		SOLE		0	0	150
NUSTAR ENERGY LP UNIT COM	Stock	67058H102	97	4,630	SH		SOLE		0	0	97
NUTANIX INC CL A	Stock	67059N108	729	17,530	SH		SOLE		0	0	729
OCCIDENTAL PETE CORP DEL COM	Stock	674599105	34	550	SH		SOLE		0	0	34
ORACLE CORP COM	Stock	68389X105	18	394	SH		SOLE		0	0	18
ORGENESIS INC COM NEW	Stock	68619K204	2	500	SH		SOLE		0	0	2
OXFORD SQUARE CAP CORP COM	Stock	69181V107	49	7,600	SH		SOLE		0	0	49
PDF SOLUTIONS INC COM	Stock	693282105	6,273	744,071	SH		SOLE		0	0	6,273
PRGX GLOBAL INC COM NEW	Stock	69357C503	49	5,166	SH		SOLE		0	0	49
PTC INC COM	Stock	69370C100	1,795	21,650	SH		SOLE		0	0	1,795
PAYCHEX INC COM	Stock	704326107	156	2,400	SH		SOLE		0	0	156
PAYPAL HLDGS INC COM	Stock	70450Y103	87	1,034	SH		SOLE		0	0	87
PEAPACK-GLADSTONE FINL CORP COM	Stock	704699107	38	1,500	SH		SOLE		0	0	38
PEPSICO INC COM	Stock	713448108	99	900	SH		SOLE		0	0	99
PFIZER INC COM	Stock	717081103	4,506	103,220	SH		SOLE		0	0	4,506
PHILIP MORRIS INTL INC COM	Stock	718172109	67	1,000	SH		SOLE		0	0	67
PLAINS ALL AMERN PIPELINE L UNIT LTD PARTN	Stock	726503105	68	3,400	SH		SOLE		0	0	68
PORTFOLIO RECOVERY ASSOCS IN NOTE 3.000 8/0	Stock	73640QAB1	9	10,000	SH		SOLE		0	0	9
PROCTER AND GAMBLE CO COM	Stock	742718109	92	1,000	SH		SOLE		0	0	92
QUOTIENT TECHNOLOGY INC COM	Stock	749119103	14,314	1,340,281	SH		SOLE		0	0	14,314
REDFIN CORP COM	Stock	75737F108	688	47,800	SH		SOLE		0	0	688
RIBBON COMMUNICATIONS INC COM	Stock	762544104	1,421	294,783	SH		SOLE		0	0	1,421
RUBICON PROJ INC COM	Stock	78112V102	56	15,000	SH		SOLE		0	0	56
SPDR GOLD TRUST GOLD SHS	Stock	78463V107	19	160	SH		SOLE		0	0	19
SCHLUMBERGER LTD COM	Stock	806857108	30	835	SH		SOLE		0	0	30
SEMPRA ENERGY COM	Stock	816851109	87	800	SH		SOLE		0	0	87
SERVICESOURCE INTL INC COM	Stock	81763U100	5	5,000	SH		SOLE		0	0	5
SMITH MICRO SOFTWARE INC COM NEW	Stock	832154207	76	42,156	SH		SOLE		0	0	76
SOCIAL REALITY INC COM CL A NEW	Stock	83362P300	1	400	SH		SOLE		0	0	1
STITCH FIX INC COM CL A	Stock	860897107	9	500	SH		SOLE		0	0	9
SUBURBAN PROPANE PARTNERS L UNIT LTD PARTN	Stock	864482104	106	5,513	SH		SOLE		0	0	106
SYNACOR INC COM	Stock	871561106	489	330,225	SH		SOLE		0	0	489
SYSCO CORP COM	Stock	871829107	75	1,200	SH		SOLE		0	0	75
TARGA RES CORP COM	Stock	87612G101	16	434	SH		SOLE		0	0	16
TECHTARGET INC COM	Stock	87874R100	2,609	213,700	SH		SOLE		0	0	2,609
TEVA PHARMACEUTICAL INDS LTD SPONSORED ADR	Stock	881624209	1,294	83,904	SH		SOLE		0	0	1,294
TEXAS INSTRS INC COM	Stock	882508104	285	3,012	SH		SOLE		0	0	285
3-D SYS CORP DEL COM NEW	Stock	88554D205	1,276	125,466	SH		SOLE		0	0	1,276
TRANSACT TECHNOLOGIES INC COM	Stock	892918103	2,023	225,228	SH		SOLE		0	0	2,023
TRUECAR INC COM	Stock	89785L107	4,380	483,450	SH		SOLE		0	0	4,380
TYME TECHNOLOGIES INC COM	Stock	90238J103	18	5,000	SH		SOLE		0	0	18
UNILEVER PLC SPON ADR NEW	Stock	904767704	76	1,445	SH		SOLE		0	0	76
UNITED CONTL HLDGS INC COM	Stock	910047109	2,498	29,830	SH		SOLE		0	0	2,498
UNITED PARCEL SERVICE INC CL B	Stock	911312106	105	1,080	SH		SOLE		0	0	105
UNITEDHEALTH GROUP INC COM	Stock	91324P102	125	500	SH		SOLE		0	0	125
VANECK VECTORS ETF TR GOLD MINERS ETF	Stock	92189F106	221	10,500	SH		SOLE		0	0	221
VANECK VECTORS ETF TR JR GOLD MINERS E	Stock	92189F791	1	35	SH		SOLE		0	0	1
VERIZON COMMUNICATIONS INC COM	Stock	92343V104	127	2,263	SH		SOLE		0	0	127
VERU INC COM	Stock	92536C103	3	1,900	SH		SOLE		0	0	3
VISTAGEN THERAPEUTICS INC COM NEW	Stock	92840H202	4	2,400	SH		SOLE		0	0	4
VOLITIONRX LTD COM	Stock	928661107	2	1,013	SH		SOLE		0	0	2
VONAGE HLDGS CORP COM	Stock	92886T201	8,787	1,006,500	SH		SOLE		0	0	8,787
WESTERN GAS PARTNERS LP COM UNIT LP IN	Stock	958254104	106	2,500	SH		SOLE		0	0	106
WEYERHAEUSER CO COM	Stock	962166104	659	30,150	SH		SOLE		0	0	659
WILLIAMS COS INC DEL COM	Stock	969457100	22	1,000	SH		SOLE		0	0	22
YUM BRANDS INC COM	Stock	988498101	1,531	16,660	SH		SOLE		0	0	1,531
ALLEGION PUB LTD CO ORD SHS	Stock	G0176J109	53	666	SH		SOLE		0	0	53
ALLERGAN PLC SHS	Stock	G0177J108	24	181	SH		SOLE		0	0	24
INGERSOLL-RAND PLC SHS	Stock	G47791101	260	2,850	SH		SOLE		0	0	260
NOBLE CORP PLC SHS USD	Stock	G65431101	2	800	SH		SOLE		0	0	2
ALLOT COMMUNICATIONS LTD SHS	Stock	M0854Q105	61	10,102	SH		SOLE		0	0	61
KORNIT DIGITAL LTD SHS	Stock	M6372Q113	1,201	64,144	SH		SOLE		0	0	1,201
RADA ELECTR INDS LTD COM PAR NEW	Stock	M81863124	4	1,500	SH		SOLE		0	0	4