Ownership Profile

Shareholder Breakdown
Shareholder Holders Values ($) % O/S Shares
Institution 73 393 98.63 17,108,129
Mutual Fund 37 53 12.24 2,123,859
Institutional Shareholder Rotation
Shareholder Holders Values Change ($) % O/S Shares Change
Buyers 42 27.60 6.26 1,085,334
Sellers 18 -22.41 5.39 -934,520
Net -- 5.20 0.87 150,814
Institutional Shareholder Concentration
Shareholder Values ($) % O/S Shares
Top 10 Inst. 301 77.76 13,488,999
Top 20 Inst. 376.00 94.79 16,442,357
Top 50 Inst. 391.54 98.32 17,055,538
Total Inst. 391.54 98.32 17,055,538
Institutional Shareholder Style
Shareholder Holders Values ($) % O/S Shares
Index 8 25 5.72 991,719
AggresGr 1 0 0.00 200
CoreGrowth 11 3 0.79 136,941
Growth 3 52 11.67 2,023,451
IncomeValue 1 0 0.07 12,148
BrokerDealer 6 6 1.47 254,528
GARP 3 1 0.24 42,466
HedgeFund 18 166 37.57 6,517,201
SectorSpecific 1 32 7.25 1,257,300
VCPrivateEquity 1 18 4.01 696,409
CoreValue 4 1 0.12 20,179
DeepValue 3 0 0.08 13,058
Top Holders: Institutional Investor
Holder Shares Held % O/S Shares Change Filing Date
EcoR1 Capital, LLC 2,943,164 16.97 0 03/31/2017
Jennison Associates LLC 2,015,526 11.62 -62,304 03/31/2017
Zlotnick Adam 1,321,009 7.62 0 03/31/2017
OrbiMed Advisors, LLC 1,257,300 7.25 -139,800 03/31/2017
Acuta Capital Partners, LLC 1,100,000 6.34 123,401 03/31/2017
venBio Select Advisor LLC 696,409 4.01 426,120 03/31/2017
QVT Financial LP 694,817 4.01 -96,769 03/31/2017
Perceptive Advisors LLC 664,354 3.83 -50,000 03/31/2017
Small Derek A 634,391 3.66 0 03/31/2017
Lopatin Uri A 626,651 3.61 0 03/31/2017
The Vanguard Group, Inc. 503,851 2.90 50,615 03/31/2017
Rock Springs Capital Management LP 390,000 2.25 0 03/31/2017
DiMarchi (Richard D) 319,240 1.84 0 03/31/2017
BlackRock Institutional Trust Company, N.A. 317,226 1.83 3,354 03/31/2017
Millennium Management LLC 253,731 1.46 -106,174 03/31/2017
Baker Bros. Advisors LP 250,000 1.44 0 03/31/2017
Susquehanna Financial Group, LLLP 133,117 0.77 101,698 03/31/2017
Geode Capital Management, L.L.C. 97,964 0.56 23,926 03/31/2017
Goldman Sachs & Company, Inc. 61,578 0.35 61,578 03/31/2017
K2 Advisors L.L.C. 53,724 0.31 0 03/31/2017
Northern Trust Investments, Inc. 51,615 0.30 9,804 03/31/2017
Dimensional Fund Advisors, L.P. 45,491 0.26 -536 03/31/2017
William Blair & Company, L.L.C. 40,850 0.24 0 03/31/2017
Jacobs Levy Equity Management, Inc. 40,768 0.24 0 03/31/2017
Lyon Street Capital, LLC 30,093 0.17 30,093 03/31/2017
Laurion Capital Management LP 26,007 0.15 26,007 03/31/2017
EAM Investors, LLC 25,214 0.15 25,214 03/31/2017
Barclays Capital 24,976 0.14 24,976 03/31/2017
Victory Capital Management Inc. 22,740 0.13 22,740 03/31/2017
Ringo (William R JR) 20,465 0.12 0 05/10/2017
Barrett (David Jonathan) 19,936 0.11 0 03/31/2017
Segantii Capital Management Limited 19,710 0.11 16,710 03/31/2017
Morgan Stanley & Co. LLC 17,647 0.10 17,647 03/31/2017
Simplex Trading, LLC 16,910 0.10 12,025 03/31/2017
PDT Partners, LLC 14,400 0.08 14,400 03/31/2017
DuPont Capital Management Corporation 13,515 0.08 13,515 03/31/2017
BNY Mellon Asset Management 12,148 0.07 0 03/31/2017
BlueCrest Capital Management LLP 12,142 0.07 12,142 03/31/2017
National Asset Management, Inc. 11,750 0.07 -2,250 03/31/2017
California Public Employees' Retirement System 11,240 0.06 0 03/31/2017
Acadian Asset Management LLC 10,325 0.06 6,083 03/31/2017
Deutsche Asset Management Americas 10,000 0.06 600 03/31/2017
Renaissance Technologies LLC 9,500 0.05 9,500 03/31/2017
Northern Trust Global Investments 9,193 0.05 851 03/31/2017
Vericimetry Advisors LLC 9,023 0.05 1,000 10/31/2016
Parametric Portfolio Associates LLC 8,875 0.05 8,875 03/31/2017
GLG Partners LP 8,835 0.05 8,835 03/31/2017
HSBC Global Asset Management (UK) Limited 8,089 0.05 8,089 03/31/2017
Altig (Anthony E) 8,000 0.05 0 03/31/2017

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

investors@assemblybio.com