Cathie Wood - ARK Invest 13F Activity & Position Changes (Q4 2017)

As of Dec 31, 2017, the ARK Invest portfolio activity showed several notable changes in holdings, according to the latest SEC 13F filing reported on May 12, 2026. The activity included new positions, additions to existing holdings, reductions, and complete exits, providing a clear view of how the portfolio evolved during the quarter.

During Q4 2017, the filing reported:

New Buys - Cboe Global Markets, Inc., Cognex Corporation, Check Point, CME Group Inc., CyberArk, and 21 more

Increases - Apple Inc., Adobe Inc., Autodesk, Inc., Albemarle Corporation, Align Technology, Inc., and 61 more

Reductions - Akamai Technologies, Inc., Alnylam Pharmaceuticals, Inc., AeroVironment, Inc., BlackBerry Limited, bluebird bio, Inc., and 5 more

Complete Exits - Agios Pharmaceuticals, Inc., Bayer A.G., Flex, Thermo Fisher Scientific Inc

These updates highlight how the portfolio adjusted across different sectors and market conditions, offering insights into allocation shifts and investment trends.

Date	Symbol	Name	Type	Change Qty	% Change	Value	Remaining
Q4 2017	AAPL Apple Inc.	Apple Inc.	Buy	+63,393	+111.7%	$20.33K	120,157
Q4 2017	ADBE Adobe Inc.	Adobe Inc.	Buy	+11,893	+169.4%	$3.31K	18,913
Q4 2017	ADSK Autodesk, Inc.	Autodesk, Inc.	Buy	+100,310	+349.7%	$13.52K	128,998
Q4 2017	AGIO Agios Pharmaceuticals, Inc.	Agios Pharmaceuticals, Inc.	Sell - Position Exit	-13,399	-100.0%	$0.00	-
Q4 2017	AKAM Akamai Technologies, Inc.	Akamai Technologies, Inc.	Sell	-117,062	-75.8%	$2.44K	37,448
Q4 2017	ALB Albemarle Corporation	Albemarle Corporation	Buy	+2,380	+40.0%	$1.07K	8,333
Q4 2017	ALGN Align Technology, Inc.	Align Technology, Inc.	Buy	+1,875	+13.2%	$3.57K	16,072
Q4 2017	ALNT Allient Inc.	Allient Inc.	Buy	+7,303	+24.9%	$1.21K	36,578
Q4 2017	ALNY Alnylam Pharmaceuticals, Inc.	Alnylam Pharmaceuticals, Inc.	Sell	-6,976	-76.9%	$267.00	2,098
Q4 2017	AME AMETEK, Inc.	AMETEK, Inc.	Buy	+1,129	+14.6%	$643.00	8,870
Q4 2017	AMZN Amazon.com, Inc.	Amazon.com, Inc.	Buy	+7,861	+21.6%	$51.79K	44,285
Q4 2017	ANSS ANSYS, Inc.	ANSYS, Inc.	Buy	+2,742	+16.9%	$2.79K	18,935
Q4 2017	ATI ATI Inc.	ATI Inc.	Buy	+112	+3.9%	$72.00	3,000
Q4 2017	AVAV AeroVironment, Inc.	AeroVironment, Inc.	Sell	-13,959	-10.0%	$7.03K	125,183
Q4 2017	BABA Alibaba Group Holding Limited	Alibaba Group Holding Limited	Buy	+34,384	+55.8%	$16.55K	95,952
Q4 2017	BAYRY Bayer A.G.	Bayer A.G.	Sell - Position Exit	-10,684	-100.0%	$0.00	-
Q4 2017	BB BlackBerry Limited	BlackBerry Limited	Sell	-417,198	-79.9%	$1.18K	105,161
Q4 2017	BIDU Baidu, Inc.	Baidu, Inc.	Buy	+54,817	+57.3%	$35.24K	150,481
Q4 2017	BIIB Biogen Inc.	Biogen Inc.	Buy	+2,311	+54.1%	$2.10K	6,579
Q4 2017	BLUE bluebird bio, Inc.	bluebird bio, Inc.	Sell	-13,069	-9.7%	$21.63K	121,462
Q4 2017	BOX Box, Inc.	Box, Inc.	Buy	+80,373	+156.3%	$2.78K	131,811
Q4 2017	CBOE Cboe Global Markets, Inc.	Cboe Global Markets, Inc.	Buy - Position Entry	+732	-	$91.00	732
Q4 2017	CERS Cerus Corporation	Cerus Corporation	Buy	+881,171	+32.8%	$12.05K	3,564,373
Q4 2017	CGEN Compugen	Compugen	Buy	+1,103,384	+95.9%	$5.63K	2,253,416
Q4 2017	CGNX Cognex Corporation	Cognex Corporation	Buy - Position Entry	+17,948	-	$1.10K	17,948
Q4 2017	CHKP Check Point	Check Point	Buy - Position Entry	+2,158	-	$224.00	2,158
Q4 2017	CLLS Cellectis S.A.	Cellectis S.A.	Buy	+28,048	+171.7%	$1.29K	44,382
Q4 2017	CME CME Group Inc.	CME Group Inc.	Buy - Position Entry	+820	-	$120.00	820
Q4 2017	CRM Salesforce, Inc.	Salesforce, Inc.	Buy	+68,293	+42.8%	$23.29K	227,803
Q4 2017	CRS Carpenter Technology Corporatio	Carpenter Technology Corporatio	Buy	+331	+24.6%	$85.00	1,674

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