Ownership Profile

Shareholder Breakdown
Shareholder Holders Values ($) % O/S Shares
Institution 118 522 100.95 17,562,945
Mutual Fund 112 103 18.20 3,166,966
Institutional Shareholder Rotation
Shareholder Holders Values Change ($) % O/S Shares Change
Buyers 49 29.73 4.96 863,698
Sellers 58 -41.21 7.17 -1,247,565
Net -- -11.48 2.21 -383,867
Institutional Shareholder Concentration
Shareholder Values ($) % O/S Shares
Top 10 Inst. 372 74.65 12,987,483
Top 20 Inst. 463.95 91.32 15,887,856
Top 50 Inst. 508.64 98.75 17,180,505
Total Inst. 508.64 98.75 17,180,505
Institutional Shareholder Style
Shareholder Holders Values ($) % O/S Shares
Index 22 76 12.56 2,185,943
AggresGr 1 0 0.00 200
CoreGrowth 17 7 1.20 209,207
Growth 3 62 10.25 1,783,178
IncomeValue 1 1 0.21 36,304
BrokerDealer 9 3 0.47 81,686
GARP 9 7 1.13 196,531
HedgeFund 20 200 32.91 5,725,865
SectorSpecific 1 26 4.30 748,026
Specialty 1 0 0.01 1,645
VCPrivateEquity 1 32 5.21 907,162
CoreValue 10 10 1.59 277,376
DeepValue 3 3 0.53 91,856
Top Holders: Institutional Investor
Holder Shares Held % O/S Shares Change Filing Date
EcoR1 Capital, LLC 2,943,164 16.92 0 09/30/2017
Jennison Associates LLC 1,773,275 10.19 -180,121 09/30/2017
Zlotnick Adam 1,321,009 7.59 0 03/31/2017
Acuta Capital Partners, LLC 1,000,000 5.75 -30,072 09/30/2017
venBio Select Advisor LLC 907,162 5.21 300,000 09/30/2017
BlackRock Institutional Trust Company, N.A. 837,395 4.81 23,699 09/30/2017
OrbiMed Advisors, LLC 748,026 4.30 -140,400 09/30/2017
The Vanguard Group, Inc. 661,032 3.80 50,116 09/30/2017
Small Derek A 634,391 3.65 0 03/31/2017
Lopatin Uri A 626,651 3.60 0 03/31/2017
Perceptive Advisors LLC 441,833 2.54 0 09/30/2017
Rock Springs Capital Management LP 390,000 2.24 0 09/30/2017
DiMarchi (Richard D) 319,240 1.83 0 03/31/2017
Baker Bros. Advisors LP 250,000 1.44 0 09/30/2017
State Street Global Advisors (US) 224,371 1.29 19,255 09/30/2017
Renaissance Technologies LLC 183,000 1.05 39,100 09/30/2017
Northern Trust Investments, Inc. 173,716 1.00 -3,865 09/30/2017
Lyon Street Capital, LLC 149,443 0.86 13,243 09/30/2017
Valeo Financial Advisors LLC 142,119 0.82 142,119 09/30/2017
Geode Capital Management, L.L.C. 129,472 0.74 6,372 09/30/2017
AXA Investment Managers UK Ltd. 118,322 0.68 -1,619 09/30/2017
Millennium Management LLC 102,471 0.59 -43,193 09/30/2017
JP Morgan Asset Management 89,700 0.52 -2,300 09/30/2017
Nuveen LLC 74,206 0.43 4,214 09/30/2017
JPMorgan Private Bank (United States) 73,900 0.42 0 09/30/2017
OxFORD Asset Management 66,227 0.38 13,925 09/30/2017
QVT Financial LP 53,280 0.31 -339,207 09/30/2017
K2 Advisors L.L.C. 52,735 0.30 -4,013 09/30/2017
BlackRock Investment Management, LLC 49,909 0.29 153 09/30/2017
Deutsche Asset Management Americas 36,430 0.21 -10,326 09/30/2017
BNY Mellon Asset Management 36,304 0.21 -525 09/30/2017
Morgan Stanley & Co. LLC 35,967 0.21 12,165 09/30/2017
Dimensional Fund Advisors, L.P. 35,474 0.20 -10,017 09/30/2017
California Public Employees' Retirement System 27,925 0.16 3,385 09/30/2017
Acadian Asset Management LLC 27,625 0.16 11,289 09/30/2017
Charles Schwab Investment Management, Inc. 23,400 0.13 0 09/30/2017
State Teachers Retirement System of Ohio 22,700 0.13 9,100 09/30/2017
California State Teachers Retirement System 22,439 0.13 -2,361 09/30/2017
Victory Capital Management Inc. 21,870 0.13 -640 09/30/2017
INVESCO Asset Management Deutschland GmbH 21,669 0.12 21,669 09/30/2017
PDT Partners, LLC 21,528 0.12 21,528 09/30/2017
Barrett (David Jonathan) 19,936 0.11 0 03/31/2017
Jacobs Levy Equity Management, Inc. 19,582 0.11 -23,086 09/30/2017
Arthur M. Cohen & Associates, LLC 19,502 0.11 0 09/30/2017
Ringo (William R JR) 19,465 0.11 0 11/01/2017
INVESCO Global Structured Products Group 18,400 0.11 18,400 06/30/2017
Oppenheim Asset Management Services S.à r.l. 17,850 0.10 2,050 09/30/2017
Northern Trust Global Investments 17,240 0.10 -500 09/30/2017
Two Sigma Investments, LP 17,121 0.10 4,576 09/30/2017

Ownership data is provided by Thomson Reuters, a third party service, and Assembly Biosciences, Inc. does not maintain or provide information directly to this service.

Investor Contact

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