| Filer | Ownership | Change % | Holdings Value | Net Change | Nb Shares | Change % | Reporting Name | Report Period |
|---|---|---|---|---|---|---|---|---|
| Commodore Capital LP | 9.9% | $29,281,576 | 1,615,981 | Commodore Capital LP | 08 Aug 2025 | |||
| RA CAPITAL MANAGEMENT, L.P. | 9.5% | $28,392,908 | 1,530,615 | RA Capital Management, L.P. | 11 Aug 2025 | |||
| JANUS HENDERSON GROUP PLC | 8.2% | $44,444,160 | 1,341,508 | JANUS HENDERSON GROUP PLC | 28 Nov 2025 | |||
| Farallon Capital Partners, L.P. | 7.8% | +7.1% | $38,963,707 | +$2,763,919 | 1,227,590 | +7.6% | Dapice Joshua J. | 31 Dec 2025 |
| Schornstein Alexander | 3.5% | -65% | $10,082,352 | -$3,424,144 | 543,523 | -25% | Alexander Schornstein | 11 Aug 2025 |
| ARMISTICE CAPITAL, LLC | 10% | $5,252,553 | 289,876 | Armistice Capital, LLC | 30 Jun 2025 |
As of 31 Dec 2025, 68 institutional investors reported holding 13,650,452 shares of ASSEMBLY BIOSCIENCES, INC. - Common Stock, par value $0.001 per shares (the "Shares") (ASMB). This represents 87% of the company’s total 15,738,333 outstanding shares.
The largest institutional shareholders of ASSEMBLY BIOSCIENCES, INC. - Common Stock, par value $0.001 per shares (the "Shares") (ASMB) together control 82% of the company’s outstanding shares — a level of ownership often associated with strong institutional conviction and long‑term capital commitment.
| Institution | Ownership % | Shares Held | Share Change % | Portfolio % | Holdings Value |
|---|---|---|---|---|---|
| GILEAD SCIENCES, INC. | 29% | 4,505,391 | 0% | 7.9% | $153,228,348 |
| FARALLON CAPITAL MANAGEMENT LLC | 7.8% | 1,227,590 | 0% | 0.24% | $41,750,336 |
| RA CAPITAL MANAGEMENT, L.P. | 6.5% | 1,020,410 | 0% | 0.36% | $34,704,144 |
| Commodore Capital LP | 6.4% | 1,000,000 | 0% | 2.3% | $34,010,000 |
| JANUS HENDERSON GROUP PLC | 5.3% | 837,925 | +11% | 0.01% | $28,539,726 |
| Paradigm Biocapital Advisors LP | 4.2% | 665,251 | 0.61% | $22,625,187 | |
| Point72 Asset Management, L.P. | 3.8% | 600,609 | +103% | 0.03% | $20,426,712 |
| VANGUARD GROUP INC | 3.6% | 572,898 | +14% | 0% | $19,484,260 |
| Blackstone Inc. | 2% | 318,754 | -29% | 0.05% | $10,840,824 |
| Parkman Healthcare Partners LLC | 1.6% | 249,357 | -0.65% | 0.81% | $8,480,632 |
| FRANKLIN RESOURCES INC | 1.3% | 210,528 | 0% | 0% | $7,160,057 |
| BlackRock, Inc. | 1.2% | 192,296 | +13% | 0% | $6,539,986 |
| B Group, Inc. | 1.1% | 175,706 | 0% | 4.4% | $5,975,761 |
| ADAGE CAPITAL PARTNERS GP, L.L.C. | 1% | 161,000 | 0.01% | $5,475,610 | |
| Eversept Partners, LP | 1% | 159,676 | 0.3% | $5,430,581 | |
| STEMPOINT CAPITAL LP | 1% | 156,728 | +137% | 0.91% | $5,330,319 |
| GEODE CAPITAL MANAGEMENT, LLC | 0.83% | 131,307 | +0.93% | 0% | $4,467,714 |
| MARSHALL WACE, LLP | 0.82% | 129,075 | +51% | 0% | $4,389,840 |
| Patient Square Capital LP | 0.81% | 127,000 | -6.1% | 0.92% | $4,319,270 |
| Caption Management, LLC | 0.68% | 106,591 | 0.16% | $3,625,160 | |
| MILLENNIUM MANAGEMENT LLC | 0.62% | 98,221 | +355% | 0% | $3,340,496 |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | 0.51% | 80,394 | -39% | 0% | $2,734,200 |
| SUPERSTRING CAPITAL MANAGEMENT LP | 0.41% | 65,273 | 1.2% | $2,219,935 | |
| Schonfeld Strategic Advisors LLC | 0.34% | 54,235 | -56% | 0.01% | $1,844,529 |
| JANE STREET GROUP, LLC | 0.34% | 53,702 | +59% | 0% | $1,826,405 |
| Period | Reported Shares, Excl. Options | Value, Excl. Options | Value Change | Price (Median) | Investors |
|---|---|---|---|---|---|
| 2025 Q4 | 13,650,452 | $464,172,637 | +$45,981,788 | $34.01 | 68 |
| 2025 Q3 | 12,244,439 | $313,500,808 | +$233,088,276 | $25.60 | 56 |
| 2025 Q2 | 3,148,479 | $57,049,319 | +$415,033 | $18.12 | 33 |
| 2025 Q1 | 3,175,639 | $30,358,304 | -$551,384 | $9.56 | 36 |
| 2024 Q4 | 3,185,761 | $50,270,587 | -$3,179,725 | $15.78 | 35 |
| 2024 Q3 | 1,026,987 | $15,540,749 | -$2,242,995 | $15.14 | 30 |
| 2024 Q2 | 1,175,256 | $16,110,171 | +$7,242,756 | $13.72 | 27 |
| 2024 Q1 | 647,283 | $8,609,474 | +$8,609,474 | $13.30 | 24 |