Ownership Profile

Shareholder Breakdown
Shareholder Holders Values ($) % O/S Shares
Institution 105 349 102.40 17,781,803
Mutual Fund 100 70 16.97 2,946,946
Institutional Shareholder Rotation
Shareholder Holders Values Change ($) % O/S Shares Change
Buyers 59 43.90 12.24 2,124,668
Sellers 39 -38.78 10.32 -1,792,100
Net -- 5.11 1.92 332,568
Institutional Shareholder Concentration
Shareholder Values ($) % O/S Shares
Top 10 Inst. 248 74.77 12,983,750
Top 20 Inst. 312.97 92.47 16,056,733
Top 50 Inst. 343.37 100.89 17,519,036
Total Inst. 343.37 100.89 17,519,036
Institutional Shareholder Style
Shareholder Holders Values ($) % O/S Shares
Index 22 43 12.03 2,089,336
AggresGr 1 0 0.00 200
CoreGrowth 16 4 1.15 199,523
Growth 2 41 11.30 1,962,096
IncomeValue 1 1 0.21 36,829
BrokerDealer 8 4 1.11 193,035
GARP 7 5 1.43 247,503
HedgeFund 20 126 35.18 6,109,468
SectorSpecific 1 18 5.12 888,426
Specialty 1 0 0.01 1,645
VCPrivateEquity 1 13 3.50 607,162
CoreValue 8 5 1.31 228,236
DeepValue 2 1 0.38 66,092
Top Holders: Institutional Investor
Holder Shares Held % O/S Shares Change Filing Date
EcoR1 Capital, LLC 2,943,164 16.95 0 06/30/2017
Jennison Associates LLC 1,953,396 11.25 -62,130 06/30/2017
Zlotnick Adam 1,321,009 7.61 0 03/31/2017
Acuta Capital Partners, LLC 1,030,072 5.93 -69,928 06/30/2017
OrbiMed Advisors, LLC 888,426 5.12 -368,874 06/30/2017
BlackRock Institutional Trust Company, N.A. 813,696 4.69 496,470 06/30/2017
Small Derek A 634,391 3.65 0 03/31/2017
Lopatin Uri A 626,651 3.61 0 03/31/2017
The Vanguard Group, Inc. 610,916 3.52 107,065 06/30/2017
venBio Select Advisor LLC 607,162 3.50 -89,247 06/30/2017
Perceptive Advisors LLC 441,833 2.54 -222,521 06/30/2017
QVT Financial LP 392,487 2.26 -302,330 06/30/2017
Rock Springs Capital Management LP 390,000 2.25 0 06/30/2017
DiMarchi (Richard D) 319,240 1.84 0 03/31/2017
Baker Bros. Advisors LP 250,000 1.44 0 06/30/2017
State Street Global Advisors (US) 205,116 1.18 205,116 06/30/2017
Northern Trust Investments, Inc. 177,581 1.02 125,966 06/30/2017
Millennium Management LLC 145,664 0.84 -108,067 06/30/2017
Renaissance Technologies LLC 143,900 0.83 134,400 06/30/2017
Lyon Street Capital, LLC 136,200 0.78 106,107 06/30/2017
Geode Capital Management, L.L.C. 123,100 0.71 25,136 06/30/2017
AXA Investment Managers UK Ltd. 119,941 0.69 119,941 06/30/2017
Susquehanna Financial Group, LLLP 109,920 0.63 -23,197 06/30/2017
JP Morgan Asset Management 92,000 0.53 91,063 06/30/2017
JPMorgan Private Bank (United States) 73,900 0.43 73,900 06/30/2017
Nuveen LLC 69,992 0.40 69,992 06/30/2017
Invesco Advisers, Inc. 63,540 0.37 63,540 06/30/2017
K2 Advisors L.L.C. 56,748 0.33 0 06/30/2017
OxFORD Asset Management 52,302 0.30 52,302 06/30/2017
BlackRock Investment Management, LLC 49,756 0.29 47,283 06/30/2017
Deutsche Asset Management Americas 46,756 0.27 36,756 06/30/2017
Dimensional Fund Advisors, L.P. 45,491 0.26 0 06/30/2017
Goldman Sachs & Company, Inc. 44,012 0.25 -17,566 06/30/2017
Jacobs Levy Equity Management, Inc. 42,668 0.25 1,900 06/30/2017
BNY Mellon Asset Management 36,829 0.21 24,681 06/30/2017
TFS Capital LLC 36,457 0.21 28,777 06/30/2017
California State Teachers Retirement System 24,800 0.14 24,800 06/30/2017
California Public Employees' Retirement System 24,540 0.14 13,300 06/30/2017
Morgan Stanley & Co. LLC 23,802 0.14 6,155 06/30/2017
Charles Schwab Investment Management, Inc. 23,400 0.13 23,400 06/30/2017
Victory Capital Management Inc. 22,510 0.13 -230 06/30/2017
Ringo (William R JR) 20,465 0.12 0 05/10/2017
Barrett (David Jonathan) 19,936 0.11 0 03/31/2017
Arthur M. Cohen & Associates, LLC 19,502 0.11 19,502 06/30/2017
Northern Trust Global Investments 17,740 0.10 8,547 06/30/2017
EAM Investors, LLC 17,660 0.10 -7,554 06/30/2017
T. Rowe Price Associates, Inc. 17,000 0.10 17,000 06/30/2017
Acadian Asset Management LLC 16,336 0.09 6,011 06/30/2017
New York State Common Retirement Fund 15,000 0.09 15,000 06/30/2017

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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