ARK Investment 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
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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	Common Stock	90214J101	23,658	366,736	SH		OTR		256,746	7,463	102,527
3D SYSTEMS CORP	Common Stock	88554D205	1,921	222,296	SH		SOLE		222,296	0	0
ADOBE SYSTEMS INC	Common Stock	00724F101	3,314	18,913	SH		SOLE		18,913	0	0
AERONAUTICS LTD	Common Stock	M0R84M115	176	56,518	SH		SOLE		0	0	0
AEROVIRONMENT INC	Common Stock	008073108	7,030	125,183	SH		OTR		43,580	0	81,603
AKAMAI TECHNOLOGIES INC	Common Stock	00971T101	2,436	37,448	SH		SOLE		37,448	0	0
ALBEMARLE CORP	Common Stock	012653101	1,066	8,333	SH		SOLE		8,333	0	0
ALIBABA GROUP HOLDING-SP ADR	ADR	01609W102	16,545	95,952	SH		OTR		56,991	3,823	33,750
ALIGN TECHNOLOGY INC	Common Stock	016255101	3,571	16,072	SH		SOLE		16,072	0	0
ALLEGHENY TECHNOLOGIES INC	Common Stock	01741R102	72	3,000	SH		SOLE		3,000	0	0
ALLIED MOTION TECHNOLOGIES	Common Stock	019330109	1,210	36,578	SH		SOLE		36,578	0	0
ALNYLAM PHARMACEUTICALS INC	Common Stock	02043Q107	267	2,098	SH		SOLE		2,098	0	0
ALPHABET INC-CL C	Common Stock	02079K107	28,658	27,387	SH		OTR		18,224	967	8,121
AMAZON.COM INC	Common Stock	023135106	51,790	44,285	SH		OTR		28,909	1,513	13,607
AMETEK INC	Common Stock	031100100	643	8,870	SH		SOLE		8,870	0	0
ANSYS INC	Common Stock	03662Q105	2,795	18,935	SH		SOLE		18,935	0	0
APPLE INC	Common Stock	037833100	20,334	120,157	SH		OTR		69,535	5,437	44,055
APTIV PLC	Common Stock	G6095L109	13,387	157,806	SH		OTR		97,335	7,134	53,337
ARCONIC INC	Common Stock	03965L100	751	27,553	SH		SOLE		27,553	0	0
ARCTURUS THERAPEUTICS LTD	Common Stock	M1492T105	610	76,737	SH		SOLE		76,737	0	0
ARKEMA SA	Common Stock	F0392W125	70	571	SH		SOLE		571	0	0
ARRK CORP	Common Stock	J0198N101	810	772,548	SH		SOLE		772,548	0	0
ASX Ltd	Common Stock	Q0604U105	108	2,525	SH		SOLE		0	0	0
ATHENAHEALTH INC	Common Stock	04685W103	50,481	379,439	SH		OTR		228,787	14,623	134,238
AUDIOCODES LTD	Common Stock	M15342104	227	30,895	SH		SOLE		0	0	0
AUTODESK INC	Common Stock	052769106	13,523	128,998	SH		OTR		86,943	5,233	36,822
BAIDU INC - SPON ADR	ADR	056752108	35,244	150,481	SH		OTR		83,077	4,802	61,927
BAYER AG REG	Common Stock	D0712D163	49	390	SH		OTR		0	390	0
BERTRANDT AG	Common Stock	D1014N107	978	8,002	SH		SOLE		8,002	0	0
BEZEQ THE ISRAELI TELECOMMUNICATION CORP LTD	Common Stock	M2012Q100	255	169,324	SH		SOLE		0	0	0
BIOGEN INC	Common Stock	09062X103	2,096	6,579	SH		SOLE		6,579	0	0
BITCOIN GOLD RECEIVABLE	Common Stock	07384Q103	501	2,004	SH		SOLE		2,004	0	0
BITCOIN INVESTMENT TRUST	Open-End Fund	09173T108	4,376	197,541	SH		OTR		22,334	171,416	3,571
BLACKBERRY LTD	Common Stock	09228F103	1,175	105,161	SH		SOLE		105,161	0	0
BLUEBIRD BIO INC	Common Stock	09609G100	21,632	121,462	SH		OTR		59,456	5,192	56,814
BOX INC - CLASS A	Common Stock	10316T104	2,784	131,811	SH		SOLE		131,811	0	0
BYD CO LTD-UNSPONSORED ADR	ADR	05606L100	1,609	92,036	SH		SOLE		92,036	0	0
CAMTEK LTD	Common Stock	M20791105	259	45,300	SH		SOLE		0	0	0
CARPENTER TECHNOLOGY	Common Stock	144285103	85	1,674	SH		SOLE		1,674	0	0
Cboe Global Markets Inc	Common Stock	12503M108	91	732	SH		SOLE		0	0	0
CELGENE CORP	Common Stock	151020104	1,012	9,695	SH		SOLE		9,695	0	0
CELLCOM ISRAEL LTD	Common Stock	M2196U109	272	26,332	SH		SOLE		0	0	0
CELLECTIS - ADR	ADR	15117K103	1,294	44,382	SH		SOLE		44,382	0	0
CERAGON NETWORKS LTD	Common Stock	M22013102	245	123,737	SH		SOLE		0	0	0
CERUS CORP	Common Stock	157085101	12,048	3,564,373	SH		OTR		2,079,802	31,986	1,452,585
Charles Schwab Corp/The	Common Stock	808513105	85	1,662	SH		SOLE		0	0	0
CHECK POINT SOFTWARE TECH	Common Stock	M22465104	224	2,158	SH		SOLE		0	0	0
CME Group Inc	Common Stock	12572Q105	120	820	SH		SOLE		0	0	0
COGNEX CORP	Common Stock	192422103	1,098	17,948	SH		SOLE		17,948	0	0
COMPUGEN LTD	Common Stock	M25722105	5,634	2,253,416	SH		OTR		2,010,753	34,170	143,129
CONFORMIS INC	Common Stock	20717E101	930	390,564	SH		SOLE		390,564	0	0
CORNERSTONE ONDEMAND INC	Common Stock	21925Y103	1,181	33,434	SH		SOLE		33,434	0	0
CRISPR THERAPEUTICS AG	Common Stock	H17182108	737	31,388	SH		SOLE		31,388	0	0
CTRIP.COM INTERNATIONAL-ADR	ADR	22943F100	6,624	150,213	SH		OTR		64,542	0	85,671
CYBERARK SOFTWARE LTD/ISRAEL	Common Stock	M2682V108	240	5,810	SH		SOLE		0	0	0
DANEL (ADIR YEOSHUA) LTD	Common Stock	M27013107	299	5,304	SH		SOLE		0	0	0
DASSAULT SYSTEMES SE	Common Stock	F2457H472	2,992	28,092	SH		SOLE		28,092	0	0
DEERE & CO	Common Stock	244199105	2,940	18,787	SH		SOLE		18,787	0	0
Domino's Pizza Inc	Common Stock	25754A201	33	173	SH		SOLE		0	0	0
DOWDUPONT INC	Common Stock	26078J100	216	3,032	SH		SOLE		3,032	0	0
EASTMAN CHEMICAL CO	Common Stock	277432100	72	774	SH		SOLE		774	0	0
EASTMAN KODAK CO	Common Stock	277461406	24	7,728	SH		SOLE		7,728	0	0
EDITAS MEDICINE INC	Common Stock	28106W103	34,198	1,112,845	SH		OTR		557,529	62,059	493,257
ELBIT SYSTEMS LTD	Common Stock	M3760D101	1,392	10,442	SH		SOLE		10,442	0	0
ELBIT SYSTEMS LTD	Common Stock	M3760D101	228	1,712	SH		SOLE		0	0	0
ELCO LTD	Common Stock	M3787F105	255	12,514	SH		SOLE		0	0	0
EVOGENE LTD	Common Stock	M4119S104	97	31,499	SH		SOLE		31,499	0	0
EXONE CO/THE	Common Stock	302104104	10,590	1,260,716	SH		OTR		873,160	6,737	380,819
FACEBOOK INC-A	Common Stock	30303M102	20,670	117,138	SH		OTR		67,978	4,550	44,152
FANUC CORP	Common Stock	J15666100	4	220	SH		OTR		0	220	0
FANUC CORP-UNSP ADR	ADR	307305102	2,914	121,203	SH		SOLE		121,203	0	0
FARO TECHNOLOGIES INC	Common Stock	311642102	724	15,397	SH		SOLE		15,397	0	0
FENNER PLC	Common Stock	G33656102	79	14,593	SH		SOLE		14,593	0	0
FirstRand Ltd	Common Stock	S5202Z131	102	18,730	SH		SOLE		0	0	0
Fiserv Inc	Common Stock	337738108	118	901	SH		SOLE		0	0	0
FIVE PRIME THERAPEUTICS INC	Common Stock	33830X104	947	43,215	SH		SOLE		43,215	0	0
FMS ENTERPRISES MIGUN LTD	Common Stock	M42619102	236	6,444	SH		SOLE		0	0	0
FOAMIX PHARMACEUTICALS LTD	Common Stock	M46135105	235	39,160	SH		SOLE		0	0	0
FOUNDATION MEDICINE INC	Common Stock	350465100	17,642	258,685	SH		OTR		87,925	8,617	162,143
GEELY AUTOMOBILE-UNSPON ADR	ADR	36847Q103	1,352	19,460	SH		SOLE		19,460	0	0
GENERAL ELECTRIC CO	Common Stock	369604103	596	34,137	SH		SOLE		34,137	0	0
GENERAL MOTORS CO	Common Stock	37045V100	4,786	116,761	SH		OTR		57,043	0	59,718
GILAT SATELLITE NETWORKS LTD	Common Stock	M51474118	290	36,694	SH		SOLE		0	0	0
GILEAD SCIENCES INC	Common Stock	375558103	1,696	23,674	SH		SOLE		23,674	0	0
Guidewire Software Inc	Common Stock	40171V100	118	1,585	SH		SOLE		0	0	0
HDFC Bank Ltd	ADR	40415F101	81	794	SH		SOLE		0	0	0
HEXAGON AB	Common Stock	W40063104	617	12,284	SH		SOLE		12,284	0	0
HEXCEL CORP	Common Stock	428291108	74	1,194	SH		SOLE		1,194	0	0
HILAN LTD	Common Stock	M5299H123	282	12,572	SH		SOLE		0	0	0
HORTONWORKS INC	Common Stock	440894103	18,537	921,786	SH		OTR		481,472	6,215	428,566
HP INC	Common Stock	40434L105	2,478	117,954	SH		SOLE		117,954	0	0
HUBSPOT INC	Common Stock	443573100	4,991	56,462	SH		SOLE		56,462	0	0
ILLUMINA INC	Common Stock	452327109	36,293	166,109	SH		OTR		84,455	9,768	71,886
IMPINJ INC	Common Stock	453204109	2,006	89,057	SH		SOLE		89,057	0	0
INCYTE CORP	Common Stock	45337C102	1,042	11,004	SH		SOLE		11,004	0	0
INOVIO PHARMACEUTICALS INC	Common Stock	45773H201	1,182	286,277	SH		SOLE		286,277	0	0
INTELLIA THERAPEUTICS INC	Common Stock	45826J105	26,430	1,375,149	SH		OTR		953,130	76,777	345,242
Interactive Brokers Group Inc	Common Stock	45841N107	30	515	SH		SOLE		0	0	0
International Business Machine	Common Stock	459200101	56	366	SH		SOLE		0	0	0
Intuit Inc	Common Stock	461202103	146	923	SH		SOLE		0	0	0
INVITAE CORP	Common Stock	46185L103	19,112	2,104,798	SH		OTR		1,250,027	19,286	835,485
IONIS PHARMACEUTICALS INC	Common Stock	462222100	18,653	370,835	SH		OTR		215,129	3,880	151,826
ITURAN LOCATION AND CONTROL	Common Stock	M6158M104	233	6,802	SH		SOLE		0	0	0
JD.COM INC-ADR	ADR	47215P106	28,079	677,913	SH		OTR		445,809	21,747	206,322
JOUNCE THERAPEUTICS INC	Common Stock	481116101	678	53,176	SH		SOLE		53,176	0	0
JUNO THERAPEUTICS INC	Common Stock	48205A109	31,197	682,495	SH		OTR		356,390	30,976	295,129
K2M GROUP HOLDINGS INC	Common Stock	48273J107	2,335	129,738	SH		SOLE		129,738	0	0
KAMADA LTD	Common Stock	M6240T109	251	52,695	SH		SOLE		0	0	0
KONINKLIJKE DSM NV	Common Stock	N5017D122	84	881	SH		SOLE		881	0	0
LENDINGCLUB CORP	Common Stock	52603A109	24,001	5,811,387	SH		OTR		3,465,595	261,706	2,042,701
LENDINGTREE INC	Common Stock	52603B107	14,811	43,505	SH		OTR		21,317	307	21,059
MAGIC SOFTWARE ENTERPRISES	Common Stock	559166103	242	28,561	SH		SOLE		0	0	0
MAGICJACK VOCALTEC LTD	Common Stock	M6787E101	314	37,211	SH		SOLE		0	0	0
MATERIALISE NV-ADR	ADR	57667T100	9,384	738,284	SH		OTR		720,859	4,808	12,617
MATRIX IT LTD	Common Stock	M6859E153	297	23,472	SH		SOLE		0	0	0
MAZOR ROBOTICS LTD-SPON ADR	ADR	57886P103	2,272	44,035	SH		SOLE		39,375	0	0
MEDIDATA SOLUTIONS INC	Common Stock	58471A105	20,664	326,079	SH		OTR		205,428	14,746	105,905
MELLANOX TECHNOLOGIES LTD	Common Stock	M51363113	3,769	58,256	SH		SOLE		52,362	0	0
MENSCH UND MASCHINE SOFTWARE	Common Stock	D5345W108	1,246	48,859	SH		SOLE		48,859	0	0
MERCADOLIBRE INC	Common Stock	58733R102	11,472	36,457	SH		OTR		19,911	0	15,980
MICROSOFT CORP	Common Stock	594918104	1,499	17,528	SH		SOLE		17,528	0	0
MSCI Inc	Common Stock	55354G100	60	477	SH		SOLE		0	0	0
NANO DIMENSION LTD - ADR	ADR	63008G104	186	60,629	SH		SOLE		60,629	0	0
NANOSTRING TECHNOLOGIES INC	Common Stock	63009R109	8,507	1,138,821	SH		OTR		1,118,525	20,296	0
Nasdaq Inc	Common Stock	631103108	122	1,588	SH		SOLE		0	0	0
NETFLIX INC	Common Stock	64110L106	26,728	139,238	SH		OTR		84,911	7,152	47,175
NICE LTD	ADR	653656108	287	3,126	SH		SOLE		0	0	0
NINTENDO CO LTD	Common Stock	J51699106	63	171	SH		OTR		0	171	0
NINTENDO CO LTD-UNSPONS ADR	ADR	654445303	10,228	226,928	SH		OTR		128,464	0	98,464
NOVA MEASURING INSTRUMENTS	Common Stock	M7516K103	220	8,474	SH		SOLE		0	0	0
NVIDIA CORP	Common Stock	67066G104	30,505	157,649	SH		OTR		108,479	4,590	43,672
ORBOTECH LTD	Common Stock	M75253100	293	5,832	SH		SOLE		0	0	0
ORGANOVO HOLDINGS INC	Common Stock	68620A104	7,895	5,891,552	SH		OTR		5,829,850	61,702	0
PACIFIC BIOSCIENCES OF CALIF	Common Stock	69404D108	565	213,917	SH		SOLE		213,917	0	0
PARTNER COMMUNICATIONS CO	Common Stock	M78465107	310	48,950	SH		SOLE		0	0	0
PAYPAL HOLDINGS INC	Common Stock	70450Y103	11,101	150,785	SH		OTR		95,195	1,572	50,757
PLUG POWER INC	Common Stock	72919P202	973	412,391	SH		SOLE		412,391	0	0
PLURISTEM THERAPEUTICS INC	Common Stock	72940R102	401	290,922	SH		SOLE		290,922	0	0
POINTER TELOCATION LTD	Common Stock	M7946T104	279	15,002	SH		SOLE		0	0	0
POLYONE CORPORATION	Common Stock	73179P106	74	1,706	SH		SOLE		1,706	0	0
PRAXAIR INC	Common Stock	74005P104	76	491	SH		SOLE		491	0	0
PRODWAYS GROUP SA	Common Stock	F7329W102	2,248	392,776	SH		SOLE		392,776	0	0
PROTO LABS INC	Common Stock	743713109	17,316	168,121	SH		OTR		93,206	1,275	73,640
PTC INC	Common Stock	69370C100	1,421	23,377	SH		SOLE		23,377	0	0
QUALCOMM INC	Common Stock	747525103	1,162	18,147	SH		SOLE		18,147	0	0
RADA ELECTRONIC INDS LTD	Common Stock	M81863124	225	73,042	SH		SOLE		0	0	0
RADCOM LTD	Common Stock	M81865111	248	12,470	SH		SOLE		0	0	0
RADWARE LTD	Common Stock	M81873107	288	14,835	SH		SOLE		0	0	0
Rakuten Inc	Common Stock	J64264104	97	10,600	SH		SOLE		0	0	0
RED HAT INC	Common Stock	756577102	18,696	155,671	SH		OTR		93,918	7,225	53,830
REDFIN CORP	Common Stock	75737F108	17,866	570,449	SH		OTR		340,451	23,733	203,108
REDHILL BIOPHARMA LTD-SP ADR	ADR	757468103	149	29,040	SH		SOLE		0	0	0
REGENERON PHARMACEUTICALS	Common Stock	75886F107	1,038	2,761	SH		SOLE		2,761	0	0
RENISHAW PLC	Common Stock	G75006117	3,034	42,936	SH		SOLE		42,936	0	0
ROCKWELL AUTOMATION INC	Common Stock	773903109	1,232	6,277	SH		SOLE		6,277	0	0
SALESFORCE.COM INC	Common Stock	79466L302	23,288	227,803	SH		OTR		132,046	6,411	88,302
SANDVIK AB	Common Stock	W74857165	71	4,068	SH		SOLE		4,068	0	0
SAPIENS INTERNATIONAL CORP	Common Stock	N7716A151	213	18,524	SH		SOLE		0	0	0
SBI Holdings Inc/Japan	Common Stock	J6991H100	180	8,600	SH		SOLE		0	0	0
SERES THERAPEUTICS INC	Common Stock	81750R102	16,483	1,625,501	SH		OTR		934,013	80,640	610,848
SERVICENOW INC	Common Stock	81762P102	2,933	22,495	SH		SOLE		22,495	0	0
SHOPIFY INC - CLASS A	Common Stock	82509L107	3,795	37,573	SH		SOLE		36,982	0	0
SIEMENS AG	Common Stock	D69671218	799	5,723	SH		SOLE		5,723	0	0
SIGMA LABS INC	Common Stock	826598302	35	16,063	SH		SOLE		16,063	0	0
SILICOM LTD	Common Stock	M84116108	262	3,742	SH		SOLE		0	0	0
SLM SOLUTIONS GROUP AG	Common Stock	D6T690109	3,937	68,577	SH		SOLE		68,577	0	0
SOFTBANK GROUP CORP	Common Stock	J75963108	44	555	SH		OTR		0	555	0
SOFTBANK GROUP CORP-UNSP ADR	ADR	83404D109	19,344	486,580	SH		OTR		326,281	17,421	139,391
SOLAREDGE TECHNOLOGIES INC	Common Stock	83417M104	315	8,382	SH		SOLE		0	0	0
SPLUNK INC	Common Stock	848637104	20,244	244,377	SH		OTR		154,057	10,550	78,467
SQUARE INC - A	Common Stock	852234103	23,464	676,779	SH		OTR		376,788	29,977	260,165
Starbucks Corp	Common Stock	855244109	98	1,707	SH		SOLE		0	0	0
STRATASYS LTD	Common Stock	M85548101	55,120	2,761,525	SH		OTR		1,571,565	105,719	1,072,073
SUNY CELLULAR COMMUNICATION	Common Stock	M8708U107	228	363,578	SH		SOLE		0	0	0
SYROS PHARMACEUTICALS INC	Common Stock	87184Q107	8,122	834,757	SH		OTR		629,973	11,439	193,345
TARO PHARMACEUTICAL INDUS	Common Stock	M8737E108	247	2,356	SH		SOLE		0	0	0
TELADOC INC	Common Stock	87918A105	1,092	31,321	SH		SOLE		31,321	0	0
TENCENT HOLDINGS LTD-UNS ADR	ADR	88032Q109	22,059	424,860	SH		OTR		261,420	14,266	143,930
TERADYNE INC	Common Stock	880770102	12,850	306,909	SH		OTR		178,201	16,243	112,465
TESLA INC	Common Stock	88160R101	43,869	140,900	SH		OTR		132,916	7,984	0
TEVA PHARMACEUTICAL-SP ADR	ADR	881624209	325	17,164	SH		SOLE		0	0	0
TORAY INDUSTRIES INC	Common Stock	J89494116	70	7,392	SH		SOLE		7,392	0	0
TOWER SEMICONDUCTOR LTD	Common Stock	M87915274	278	8,162	SH		SOLE		0	0	0
TOYOTA MOTOR CORP -SPON ADR	ADR	892331307	1,863	14,646	SH		SOLE		14,646	0	0
Trade Me Group Ltd	Common Stock	Q9162N106	55	15,998	SH		SOLE		0	0	0
TransUnion	Common Stock	89400J107	99	1,803	SH		SOLE		0	0	0
TRIMBLE INC	Common Stock	896239100	3,416	84,044	SH		SOLE		84,044	0	0
TWILIO INC - A	Common Stock	90138F102	3,696	156,620	SH		OTR		153,666	2,954	0
TWITTER INC	Common Stock	90184L102	53,199	2,215,686	SH		OTR		1,288,625	84,547	842,514
ULTRA CLEAN HOLDINGS INC	Common Stock	90385V107	549	23,758	SH		SOLE		23,758	0	0
UNITED PARCEL SERVICE-CL B	Common Stock	911312106	703	5,896	SH		SOLE		5,896	0	0
UROGEN PHARMA LTD	Common Stock	M96088105	345	9,284	SH		SOLE		0	0	0
VASCULAR BIOGENICS LTD	Common Stock	M96883109	302	42,484	SH		SOLE		0	0	0
VERACYTE INC	Common Stock	92337F107	9,157	1,402,264	SH		OTR		1,386,031	16,233	0
Verisk Analytics Inc	Common Stock	92345Y106	33	344	SH		SOLE		0	0	0
Visa Inc	Common Stock	92826C839	69	602	SH		SOLE		0	0	0
Wirecard AG	ADR	97654L108	33	597	SH		SOLE		0	0	0
WIX.COM LTD	Common Stock	M98068105	215	3,742	SH		SOLE		0	0	0
Workday Inc	Common Stock	98138H101	68	671	SH		SOLE		0	0	0
Xero Ltd	Common Stock	Q98665104	71	3,196	SH		SOLE		0	0	0
XILINX INC	Common Stock	983919101	18,983	281,568	SH		OTR		178,714	8,786	94,068