ASSEMBLY BIOSCIENCES, INC. - ASMB

Detailed investor-level table based on 13F positions.

Shareholders (13F)

Quarter: Q1 2026 · Compare: Q4 2025
13D/13G major owners: Ownership tab.
Methodology: Market value and % of portfolio use SEC reported VALUE ($000). For PUT/CALL positions this reflects reported underlying exposure, not premium cash paid/received. Details.
Rows: 0
Investor History Status Shares held Market value ($000) % of portfolio Previous % Rank Change in shares % change in shares Source Date reported
GILEAD SCIENCES, INC. History No change 4,505,391 125,024 5.9% 7.92% 1 0 0.0% Q1 2026 May 08, 2026
FARALLON CAPITAL MANAGEMENT LLC History No change 1,227,590 34,065 0.19% 0.2% 2 0 0.0% Q1 2026 May 15, 2026
RA CAPITAL MANAGEMENT, L.P. History No change 1,020,410 28,316 0.3% 0.36% 3 0 0.0% Q1 2026 May 15, 2026
Commodore Capital LP History No change 1,000,000 27,750 1.61% 2.26% 4 0 0.0% Q1 2026 May 15, 2026
JANUS HENDERSON GROUP PLC History Added to 849,309 23,479 0.01% 0.01% 5 +11,384 1.36% Q1 2026 May 18, 2026
VANGUARD GROUP INC History No change 572,898 19,484 0.0% 0.0% 6 0 0.0% Q4 2025 Jan 29, 2026
Paradigm Biocapital Advisors LP History No change 665,251 18,460 0.38% 0.58% 7 0 0.0% Q1 2026 May 15, 2026
VANGUARD CAPITAL MANAGEMENT LLC History New 490,447 13,609 0.0% 8 +490,447 New Q1 2026 May 15, 2026
Parkman Healthcare Partners LLC History Added to 411,227 11,411 1.18% 0.81% 9 +161,870 64.91% Q1 2026 May 15, 2026
Point72 Asset Management, L.P. History Reduced 344,105 9,548 0.01% 0.02% 10 -256,504 -42.71% Q1 2026 May 15, 2026
Blackstone Inc. History Reduced 296,855 8,237 0.03% 0.04% 11 -21,899 -6.87% Q1 2026 May 15, 2026
MILLENNIUM MANAGEMENT LLC History Added to 233,650 6,483 0.0% 0.0% 12 +135,429 137.88% Q1 2026 May 15, 2026
BlackRock, Inc. History Added to 202,743 5,626 0.0% 0.0% 13 +10,447 5.43% Q1 2026 May 13, 2026
STEMPOINT CAPITAL LP History Added to 185,435 5,145 1.0% 0.91% 14 +28,707 18.32% Q1 2026 May 15, 2026
B Group, Inc. History No change 175,706 4,875 3.61% 4.41% 15 0 0.0% Q1 2026 May 15, 2026
MARSHALL WACE, LLP History Added to 163,400 4,534 0.0% 0.0% 16 +34,325 26.59% Q1 2026 May 14, 2026
ADAGE CAPITAL PARTNERS GP, L.L.C. History No change 161,000 4,467 0.01% 0.01% 17 0 0.0% Q1 2026 May 15, 2026
Patient Square Capital LP History Added to 136,315 3,782 0.67% 0.92% 18 +9,315 7.33% Q1 2026 May 15, 2026
GEODE CAPITAL MANAGEMENT, LLC History Added to 132,971 3,691 0.0% 0.0% 19 +1,664 1.27% Q1 2026 May 15, 2026
Schonfeld Strategic Advisors LLC History Added to 120,500 3,343 0.02% 0.01% 20 +66,265 122.18% Q1 2026 May 15, 2026
Caption Management, LLC History Reduced 81,841 2,271 0.01% 0.02% 21 -24,750 -23.22% Q1 2026 May 15, 2026
HighVista Strategies LLC History New 74,735 2,073 0.57% 22 +74,735 New Q1 2026 May 15, 2026
VANGUARD FIDUCIARY TRUST CO History New 71,606 1,987 0.0% 23 +71,606 New Q1 2026 May 08, 2026
Qube Research & Technologies Ltd History Added to 69,256 1,921 0.0% 0.0% 24 +27,071 64.17% Q1 2026 May 15, 2026
STATE STREET CORP History Added to 56,689 1,573 0.0% 0.0% 25 +3,700 6.98% Q1 2026 May 15, 2026
Seven Fleet Capital Management LP History Reduced 56,147 1,558 0.49% 1.7% 26 -17,615 -23.88% Q1 2026 May 15, 2026
JPMORGAN CHASE & CO History Added to 53,962 1,437 0.0% 0.0% 27 +5,803 12.05% Q1 2026 May 13, 2026
MONIMUS CAPITAL MANAGEMENT, LP History Added to 48,390 1,342 0.37% 0.86% 28 +10,089 26.34% Q1 2026 May 15, 2026
GSA CAPITAL PARTNERS LLP History Added to 45,049 1,250 0.08% 0.04% 29 +32,350 254.74% Q1 2026 May 08, 2026
NORTHERN TRUST CORP History Reduced 41,014 1,138 0.0% 0.0% 30 -213 -0.52% Q1 2026 May 14, 2026
Eversept Partners, LP History Reduced 40,889 1,134 0.06% 0.27% 31 -118,787 -74.39% Q1 2026 May 15, 2026
ARROWSTREET CAPITAL, LIMITED PARTNERSHIP History Added to 39,446 1,094 0.0% 0.0% 32 +1,634 4.32% Q1 2026 May 14, 2026
GOLDMAN SACHS GROUP INC History Added to 36,205 1,004 0.0% 0.0% 33 +1,411 4.06% Q1 2026 May 15, 2026
JANE STREET GROUP, LLC History Reduced 34,499 957 0.0% 0.0% 34 -19,203 -35.76% Q1 2026 May 12, 2026
MORGAN STANLEY History Added to 33,055 917 0.0% 0.0% 35 +10,521 46.69% Q1 2026 May 15, 2026
SUSQUEHANNA INTERNATIONAL GROUP, LLP History Reduced 32,949 914 0.0% 0.0% 36 -47,445 -59.02% Q1 2026 May 15, 2026
683 Capital Management, LLC History No change 27,863 773 0.04% 0.04% 37 0 0.0% Q1 2026 May 15, 2026
BARCLAYS PLC History Added to 27,050 750 0.0% 0.0% 38 +2,309 9.33% Q1 2026 May 14, 2026
WELLINGTON MANAGEMENT GROUP LLP History New 26,496 735 0.0% 39 +26,496 New Q1 2026 May 15, 2026
CITADEL ADVISORS LLC History Reduced 25,437 705 0.0% 0.0% 40 -7,429 -22.6% Q1 2026 May 15, 2026
Squarepoint Ops LLC History New 23,804 660 0.0% 41 +23,804 New Q1 2026 May 15, 2026
Trexquant Investment LP History Reduced 22,741 631 0.0% 0.01% 42 -5,535 -19.57% Q1 2026 May 15, 2026
Connor, Clark & Lunn Investment Management Ltd. History Added to 21,761 603 0.0% 0.0% 43 +959 4.61% Q1 2026 May 11, 2026
TWO SIGMA INVESTMENTS, LP History New 20,550 570 0.0% 44 +20,550 New Q1 2026 May 15, 2026
ADAR1 Capital Management, LLC History Added to 19,947 553 0.03% 0.05% 45 +200 1.01% Q1 2026 May 15, 2026
Palumbo Wealth Management LLC History Reduced 19,643 545 0.13% 0.31% 46 -17,662 -47.34% Q1 2026 May 12, 2026
FEDERATED HERMES, INC. History Reduced 18,904 524 0.0% 0.0% 47 -6,490 -25.56% Q1 2026 May 11, 2026
VANGUARD PORTFOLIO MANAGEMENT LLC History New 17,723 491 0.0% 48 +17,723 New Q1 2026 May 08, 2026
Hudson Bay Capital Management LP History Added to 16,799 466 0.0% 0.0% 49 +1,749 11.62% Q1 2026 May 13, 2026
RENAISSANCE TECHNOLOGIES LLC History Added to 15,651 434 0.0% 0.0% 50 +6,411 69.38% Q1 2026 May 14, 2026
Susquehanna Portfolio Strategies, LLC History Added to 14,100 391 0.01% 0.01% 51 +197 1.42% Q1 2026 May 15, 2026
EntryPoint Capital, LLC History New 12,384 343 0.1% 52 +12,384 New Q1 2026 May 14, 2026
Brevan Howard Capital Management LP History New 11,112 308 0.0% 53 +11,112 New Q1 2026 May 15, 2026
Jump Financial, LLC History New 10,917 302 0.0% 55 +10,917 New Q1 2026 May 14, 2026
BANK OF AMERICA CORP /DE/ History Added to 10,902 302 0.0% 0.0% 54 +5,792 113.35% Q1 2026 May 15, 2026
XTX Topco Ltd History New 10,785 299 0.01% 56 +10,785 New Q1 2026 May 15, 2026
Engineers Gate Manager LP History Reduced 9,423 261 0.0% 0.0% 57 -952 -9.18% Q1 2026 May 15, 2026
AMERICAN CENTURY COMPANIES INC History New 9,154 254 0.0% 58 +9,154 New Q1 2026 May 15, 2026
CANADA PENSION PLAN INVESTMENT BOARD History Added to 8,500 235 0.0% 0.0% 59 +5,000 142.86% Q1 2026 May 15, 2026
OMERS ADMINISTRATION Corp History Reduced 8,100 224 0.0% 0.0% 60 -7,498 -48.07% Q1 2026 May 15, 2026
Virtus Investment Advisers, LLC History Added to 7,553 209 0.06% 0.07% 61 +184 2.5% Q1 2026 May 14, 2026
CITIGROUP INC History Added to 6,483 179 0.0% 0.0% 62 +4,282 194.55% Q1 2026 May 11, 2026
Vanguard Global Advisers, LLC History New 4,615 128 0.0% 63 +4,615 New Q1 2026 May 08, 2026
Tower Research Capital LLC (TRC) History Reduced 544 15 0.0% 0.0% 64 -63 -10.38% Q1 2026 May 15, 2026
UBS Group AG History Reduced 364 10 0.0% 0.0% 65 -9,415 -96.28% Q1 2026 May 05, 2026
NORTHWESTERN MUTUAL WEALTH MANAGEMENT CO History No change 260 7 0.0% 0.0% 66 0 0.0% Q1 2026 May 07, 2026
Aquatic Capital Management LLC History New 220 6 0.0% 67 +220 New Q1 2026 May 15, 2026
RHUMBLINE ADVISERS History No change 190 5 0.0% 0.0% 68 0 0.0% Q1 2026 May 12, 2026
BNP PARIBAS FINANCIAL MARKETS History Added to 149 4 0.0% 69 +147 7350.0% Q1 2026 May 12, 2026
Accent Capital Management, LLC History New 142 3 0.0% 70 +142 New Q1 2026 May 11, 2026
OSAIC HOLDINGS, INC. History No change 100 2 0.0% 0.0% 71 0 0.0% Q1 2026 May 15, 2026
FIFTH THIRD BANCORP History New 57 1 0.0% 74 +57 New Q1 2026 May 01, 2026
US BANCORP \DE\ History No change 59 1 0.0% 0.0% 72 0 0.0% Q1 2026 May 14, 2026
EverSource Wealth Advisors, LLC History No change 55 1 0.0% 0.0% 73 0 0.0% Q1 2026 May 15, 2026
FRANKLIN RESOURCES INC History Closed out 0 0 0.0% -210,528 -100.0% Q1 2026 May 13, 2026
SUPERSTRING CAPITAL MANAGEMENT LP History Closed out 0 0 1.19% -65,273 -100.0% Q1 2026 May 14, 2026
Ellsworth Advisors, LLC History Closed out 0 0 0.18% -29,735 -100.0% Q1 2026 Apr 16, 2026
Informed Momentum Co LLC History Closed out 0 0 0.11% -29,523 -100.0% Q1 2026 May 13, 2026
SEI INVESTMENTS CO History Closed out 0 0 0.0% -17,745 -100.0% Q1 2026 May 13, 2026
RAYMOND JAMES FINANCIAL INC History Closed out 0 0 0.0% -13,082 -100.0% Q1 2026 May 14, 2026
ACADIAN ASSET MANAGEMENT LLC History Closed out 0 0 0.0% -12,446 -100.0% Q1 2026 May 13, 2026
CHARLES SCHWAB INVESTMENT MANAGEMENT INC History Closed out 0 0 0.0% -6,704 -100.0% Q1 2026 May 15, 2026
Farther Finance Advisors, LLC History Closed out 0 0 0.0% -154 -100.0% Q1 2026 Apr 07, 2026
QUADRANT CAPITAL GROUP LLC History Closed out 0 0 -22 -100.0% Q1 2026 May 13, 2026
ROYAL BANK OF CANADA History New 16 0 +16 New Q1 2026 May 15, 2026
Allworth Financial LP History Reduced 29 0 0.0% -3 -9.38% Q1 2026 May 14, 2026