LB PHARMACEUTICALS INC - LBRX
Detailed investor-level table based on 13F positions.
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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Deep Track Capital, LP | History | No change | 3,352,804 | 82,680 | 1.35% | 1.33% | 1 | 0 | 0.0% | Q1 2026 | May 15, 2026 |
| BlackRock, Inc. | History | Added to | 2,470,845 | 60,931 | 0.0% | 0.0% | 2 | +231,911 | 10.36% | Q1 2026 | May 13, 2026 |
| RA CAPITAL MANAGEMENT, L.P. | History | No change | 2,208,604 | 54,464 | 0.58% | 0.5% | 3 | 0 | 0.0% | Q1 2026 | May 15, 2026 |
| TCG Crossover Management, LLC | History | Added to | 1,839,489 | 45,279 | 1.3% | 1.29% | 4 | +94,474 | 5.41% | Q1 2026 | May 15, 2026 |
| Commodore Capital LP | History | No change | 1,500,000 | 36,990 | 2.14% | 2.22% | 5 | 0 | 0.0% | Q1 2026 | May 15, 2026 |
| Caligan Partners LP | History | New | 1,438,070 | 34,628 | 2.3% | — | 6 | +1,438,070 | New | Q1 2026 | May 15, 2026 |
| Spruce Street Capital LP | History | Added to | 1,376,159 | 33,644 | 8.09% | 7.4% | 7 | +370,566 | 36.85% | Q1 2026 | May 14, 2026 |
| JPMORGAN CHASE & CO | History | Reduced | 1,427,568 | 33,190 | 0.0% | 0.0% | 8 | -183,914 | -11.41% | Q1 2026 | May 13, 2026 |
| Trails Edge Capital Partners, LP | History | Reduced | 1,319,362 | 32,535 | 7.45% | 7.68% | 9 | -76,246 | -5.46% | Q1 2026 | May 15, 2026 |
| Nantahala Capital Management, LLC | History | Added to | 1,052,894 | 25,964 | 0.96% | 0.5% | 10 | +377,894 | 55.98% | Q1 2026 | May 15, 2026 |
| VANGUARD GROUP INC | History | No change | 1,112,978 | 24,774 | 0.0% | 0.0% | 11 | 0 | 0.0% | Q4 2025 | Jan 29, 2026 |
| BALYASNY ASSET MANAGEMENT L.P. | History | Added to | 923,694 | 22,778 | 0.03% | 0.03% | 12 | +26,888 | 3.0% | Q1 2026 | May 15, 2026 |
| Logos Global Management LP | History | Reduced | 915,000 | 22,563 | 1.13% | 1.61% | 13 | -285,000 | -23.75% | Q1 2026 | May 15, 2026 |
| VANGUARD CAPITAL MANAGEMENT LLC | History | New | 894,653 | 22,062 | 0.0% | — | 14 | +894,653 | New | Q1 2026 | May 15, 2026 |
| Alyeska Investment Group, L.P. | History | Added to | 863,947 | 21,283 | 0.06% | 0.04% | 15 | +188,947 | 27.99% | Q1 2026 | May 15, 2026 |
| Vivo Capital, LLC | History | No change | 800,000 | 19,728 | 1.64% | 1.15% | 16 | 0 | 0.0% | Q1 2026 | May 20, 2026 |
| Nan Fung Group Holdings Ltd | History | Added to | 630,657 | 15,552 | 12.82% | 5.98% | 17 | +330,657 | 110.22% | Q1 2026 | May 14, 2026 |
| JENNISON ASSOCIATES LLC | History | Reduced | 538,216 | 13,272 | 0.01% | 0.01% | 18 | -283,636 | -34.51% | Q1 2026 | May 06, 2026 |
| GEODE CAPITAL MANAGEMENT, LLC | History | Added to | 518,228 | 12,783 | 0.0% | 0.0% | 19 | +76,774 | 17.39% | Q1 2026 | May 15, 2026 |
| STATE STREET CORP | History | Added to | 504,373 | 12,437 | 0.0% | 0.0% | 20 | +254,343 | 101.72% | Q1 2026 | May 15, 2026 |
| CITADEL ADVISORS LLC | History | Added to | 416,906 | 10,280 | 0.0% | 0.0% | 21 | +9,238 | 2.27% | Q1 2026 | May 15, 2026 |
| GOLDMAN SACHS GROUP INC | History | Added to | 363,799 | 8,971 | 0.0% | 0.0% | 22 | +60,684 | 20.02% | Q1 2026 | May 15, 2026 |
| GREAT POINT PARTNERS LLC | History | New | 300,000 | 7,398 | 1.7% | — | 23 | +300,000 | New | Q1 2026 | May 15, 2026 |
| FMR LLC | History | Added to | 222,508 | 5,487 | 0.0% | 0.0% | 24 | +643 | 0.29% | Q1 2026 | May 15, 2026 |
| BAKER BROS. ADVISORS LP | History | No change | 200,000 | 4,932 | 0.03% | 0.03% | 25 | 0 | 0.0% | Q1 2026 | May 15, 2026 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | History | Added to | 186,095 | 4,589 | 0.0% | 0.0% | 26 | +8,479 | 4.77% | Q1 2026 | May 15, 2026 |
| HighVista Strategies LLC | History | Added to | 173,595 | 4,280 | 1.18% | 0.8% | 27 | +33,488 | 23.9% | Q1 2026 | May 15, 2026 |
| VANGUARD FIDUCIARY TRUST CO | History | New | 157,426 | 3,882 | 0.0% | — | 28 | +157,426 | New | Q1 2026 | May 08, 2026 |
| NORTHERN TRUST CORP | History | Added to | 154,398 | 3,807 | 0.0% | 0.0% | 29 | +10,432 | 7.25% | Q1 2026 | May 14, 2026 |
| Integral Health Asset Management, LLC | History | Added to | 150,000 | 3,699 | 0.18% | 0.11% | 30 | +50,000 | 50.0% | Q1 2026 | May 15, 2026 |
| UBS Group AG | History | Added to | 137,932 | 3,401 | 0.0% | 0.0% | 31 | +87,219 | 171.99% | Q1 2026 | May 05, 2026 |
| MILLENNIUM MANAGEMENT LLC | History | New | 136,966 | 3,377 | 0.0% | — | 32 | +136,966 | New | Q1 2026 | May 15, 2026 |
| VANGUARD PORTFOLIO MANAGEMENT LLC | History | New | 112,497 | 2,774 | 0.0% | — | 33 | +112,497 | New | Q1 2026 | May 08, 2026 |
| AMERIPRISE FINANCIAL INC | History | Reduced | 108,307 | 2,670 | 0.0% | 0.0% | 34 | -85,237 | -44.04% | Q1 2026 | May 15, 2026 |
| Eversept Partners, LP | History | New | 100,198 | 2,470 | 0.13% | — | 35 | +100,198 | New | Q1 2026 | May 15, 2026 |
| Russell Investments Group, Ltd. | History | Added to | 72,067 | 1,777 | 0.0% | 0.0% | 36 | +70,542 | 4625.7% | Q1 2026 | May 08, 2026 |
| Boxer Capital Management, LLC | History | No change | 70,000 | 1,726 | 0.23% | 0.34% | 37 | 0 | 0.0% | Q1 2026 | May 15, 2026 |
| JANUS HENDERSON GROUP PLC | History | New | 65,429 | 1,613 | 0.0% | — | 38 | +65,429 | New | Q1 2026 | May 18, 2026 |
| WELLINGTON MANAGEMENT GROUP LLP | History | New | 52,640 | 1,298 | 0.0% | — | 39 | +52,640 | New | Q1 2026 | May 15, 2026 |
| STEMPOINT CAPITAL LP | History | New | 50,000 | 1,233 | 0.24% | — | 40 | +50,000 | New | Q1 2026 | May 15, 2026 |
| MORGAN STANLEY | History | Added to | 47,280 | 1,165 | 0.0% | 0.0% | 41 | +22,639 | 91.88% | Q1 2026 | May 15, 2026 |
| Bank of New York Mellon Corp | History | Added to | 45,457 | 1,120 | 0.0% | 0.0% | 42 | +4,940 | 12.19% | Q1 2026 | May 05, 2026 |
| ACUTA CAPITAL PARTNERS, LLC | History | Reduced | 28,919 | 713 | 0.5% | 0.45% | 43 | -1,081 | -3.6% | Q1 2026 | May 15, 2026 |
| Calamos Advisors LLC | History | New | 24,063 | 593 | 0.0% | — | 44 | +24,063 | New | Q1 2026 | May 04, 2026 |
| Nuveen, LLC | History | No change | 22,966 | 566 | 0.0% | 0.0% | 45 | 0 | 0.0% | Q1 2026 | Apr 30, 2026 |
| Focus Partners Wealth | History | Reduced | 19,815 | 488 | 0.0% | 0.0% | 46 | -280 | -1.39% | Q1 2026 | May 14, 2026 |
| NORGES BANK | History | No change | 20,000 | 445 | 0.0% | 0.0% | 47 | 0 | 0.0% | Q4 2025 | Feb 10, 2026 |
| RHUMBLINE ADVISERS | History | Added to | 17,103 | 421 | 0.0% | 0.0% | 48 | +820 | 5.04% | Q1 2026 | May 12, 2026 |
| BANK OF AMERICA CORP /DE/ | History | Reduced | 16,618 | 409 | 0.0% | 0.0% | 49 | -27,140 | -62.02% | Q1 2026 | May 15, 2026 |
| DEUTSCHE BANK AG\ | History | Added to | 15,359 | 378 | 0.0% | 0.0% | 50 | +2,061 | 15.5% | Q1 2026 | May 06, 2026 |
| MEYER HANDELMAN CO | History | New | 15,094 | 372 | 0.01% | — | 51 | +15,094 | New | Q1 2026 | Apr 20, 2026 |
| Opaleye Management Inc. | History | New | 14,506 | 357 | 0.05% | — | 52 | +14,506 | New | Q1 2026 | May 15, 2026 |
| PRICE T ROWE ASSOCIATES INC /MD/ | History | Added to | 13,229 | 327 | 0.0% | 0.0% | 53 | +2,155 | 19.46% | Q1 2026 | May 15, 2026 |
| TWO SIGMA INVESTMENTS, LP | History | No change | 12,720 | 313 | 0.0% | 0.0% | 54 | 0 | 0.0% | Q1 2026 | May 15, 2026 |
| MetLife Investment Management, LLC | History | No change | 11,104 | 273 | 0.0% | 0.0% | 55 | 0 | 0.0% | Q1 2026 | May 14, 2026 |
| Invesco Ltd. | History | Reduced | 10,729 | 264 | 0.0% | 0.0% | 56 | -226 | -2.06% | Q1 2026 | May 12, 2026 |
| Soleus Capital Management, L.P. | History | No change | 10,000 | 246 | 0.01% | 0.01% | 57 | 0 | 0.0% | Q1 2026 | May 14, 2026 |
| Quadrature Capital Ltd | History | New | 9,931 | 244 | 0.0% | — | 58 | +9,931 | New | Q1 2026 | May 15, 2026 |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | History | Added to | 9,170 | 226 | 0.0% | 0.0% | 59 | +204 | 2.28% | Q1 2026 | May 15, 2026 |
| Vanguard Global Advisers, LLC | History | New | 8,753 | 215 | 0.0% | — | 60 | +8,753 | New | Q1 2026 | May 08, 2026 |
| WELLS FARGO & COMPANY/MN | History | Reduced | 8,623 | 212 | 0.0% | 0.0% | 61 | -13,680 | -61.34% | Q1 2026 | May 11, 2026 |
| NEW YORK STATE COMMON RETIREMENT FUND | History | New | 6,100 | 150 | 0.0% | — | 62 | +6,100 | New | Q1 2026 | May 06, 2026 |
| Police & Firemen's Retirement System of New Jersey | History | Added to | 6,041 | 148 | 0.0% | 0.0% | 63 | +1,616 | 36.52% | Q1 2026 | Apr 29, 2026 |
| CITIGROUP INC | History | Added to | 5,569 | 137 | 0.0% | 0.0% | 64 | +5,134 | 1180.23% | Q1 2026 | May 11, 2026 |
| STRS OHIO | History | Added to | 5,100 | 125 | 0.0% | 0.0% | 65 | +1,700 | 50.0% | Q1 2026 | Apr 24, 2026 |
| FEDERATED HERMES, INC. | History | No change | 5,000 | 123 | 0.0% | 0.0% | 66 | 0 | 0.0% | Q1 2026 | May 11, 2026 |
| BARCLAYS PLC | History | Reduced | 4,530 | 111 | 0.0% | 0.0% | 67 | -25,685 | -85.01% | Q1 2026 | May 14, 2026 |
| BNP PARIBAS FINANCIAL MARKETS | History | Added to | 4,052 | 99 | 0.0% | 0.0% | 68 | +45 | 1.12% | Q1 2026 | May 12, 2026 |
| Legal & General Group Plc | History | Reduced | 1,723 | 42 | 0.0% | 0.0% | 69 | -155 | -8.25% | Q1 2026 | May 08, 2026 |
| Tower Research Capital LLC (TRC) | History | Added to | 1,661 | 40 | 0.0% | 0.0% | 70 | +300 | 22.04% | Q1 2026 | May 15, 2026 |
| Ameritas Investment Partners, Inc. | History | No change | 1,562 | 38 | 0.0% | 0.0% | 71 | 0 | 0.0% | Q1 2026 | May 13, 2026 |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM | History | Reduced | 1,041 | 25 | 0.0% | 0.0% | 72 | -143 | -12.08% | Q1 2026 | May 15, 2026 |
| Sterling Capital Management LLC | History | Reduced | 368 | 9 | 0.0% | 0.0% | 73 | -224 | -37.84% | Q1 2026 | Apr 22, 2026 |
| GAMMA Investing LLC | History | Added to | 162 | 3 | 0.0% | — | 74 | +148 | 1057.14% | Q1 2026 | Apr 06, 2026 |
| PNC FINANCIAL SERVICES GROUP, INC. | History | New | 145 | 3 | 0.0% | — | 75 | +145 | New | Q1 2026 | May 08, 2026 |
| MassMutual Private Wealth & Trust, FSB | History | New | 54 | 1 | 0.0% | — | 76 | +54 | New | Q1 2026 | Apr 13, 2026 |
| Longbow Finance SA | History | Closed out | 0 | 0 | — | 0.31% | — | -82,336 | -100.0% | Q1 2026 | May 12, 2026 |
| JANE STREET GROUP, LLC | History | Closed out | 0 | 0 | — | 0.0% | — | -31,733 | -100.0% | Q1 2026 | May 12, 2026 |
| XTX Topco Ltd | History | Closed out | 0 | 0 | — | 0.01% | — | -19,121 | -100.0% | Q1 2026 | May 15, 2026 |
| MARSHALL WACE, LLP | History | Closed out | 0 | 0 | — | 0.0% | — | -18,014 | -100.0% | Q1 2026 | May 14, 2026 |
| Jefferies Financial Group Inc. | History | Closed out | 0 | 0 | — | 0.0% | — | -12,445 | -100.0% | Q1 2026 | May 07, 2026 |
| SG Americas Securities, LLC | History | Closed out | 0 | 0 | — | 0.0% | — | -6,434 | -100.0% | Q1 2026 | Apr 16, 2026 |
| Persistent Asset Partners Ltd | History | Closed out | 0 | 0 | — | 0.04% | — | -4,080 | -100.0% | Q1 2026 | May 12, 2026 |
| ROYAL BANK OF CANADA | History | Closed out | 0 | 0 | — | 0.0% | — | -767 | -100.0% | Q1 2026 | May 15, 2026 |
| AMALGAMATED BANK | History | Closed out | 0 | 0 | — | 0.0% | — | -605 | -100.0% | Q1 2026 | May 08, 2026 |
| CWM, LLC | History | Added to | 29 | 0 | — | — | — | +21 | 262.5% | Q1 2026 | May 14, 2026 |
| Allworth Financial LP | History | New | 1 | 0 | — | — | — | +1 | New | Q1 2026 | May 14, 2026 |
| EverSource Wealth Advisors, LLC | History | New | 1 | 0 | — | — | — | +1 | New | Q1 2026 | May 15, 2026 |