LBRX · Lb Pharmaceuticals Inc · Holdings
Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.
Institutional Ownership Trend
Holder Concentration
Across 114 13F filersWho Holds LBRX
Last 5 quarters through Sep 30, 2026 (filing window open)Each kind of 13F filer's share of the common shares 13F filers report. Holder type comes from regulatory records, never the filer's name; style, turnover and horizon are measured from each filer's own 13F book. The quarter selector does not change this card.
Jun 30, 2026, the newest closed quarter: 114 filers, like-for-like change +5.5%; actively managed books +2.8%; index-like books +17.5%.
| Holder type | Share | Filers | Change |
|---|---|---|---|
| Registered adviser | 51.8% | 47 | +2.4% |
| Exempt adviser | 0.1% | 2 | new |
| Adviser | 12.2% | 5 | +3.4% |
| Bank | 8.4% | 12 | +8.4% |
| Benefit plan | 0.1% | 1 | +166.7% |
| Non-US | 0.4% | 2 | +458.2% |
| Holding company | 12.1% | 5 | +14.3% |
| Unknown | 14.9% | 40 | +6.6% |
| Style | Share | Filers | Change |
|---|---|---|---|
| Index-like | 20.6% | 22 | +17.5% |
| Systematic-like | 9.1% | 13 | +14.5% |
| Concentrated | 25.5% | 14 | +1.8% |
| Diversified active | 44.8% | 65 | +1.2% |
| Not measured | 0.0% | 0 | — |
| Unknown | 0.0% | 0 | — |
| Turnover | Share | Filers | Change |
|---|---|---|---|
| Low turnover | 43.5% | 56 | +7.1% |
| Medium turnover | 29.7% | 24 | +3.3% |
| High turnover | 12.4% | 22 | +1.4% |
| Unknown | 14.4% | 12 | +9.1% |
| Not measured | 0.0% | 0 | — |
| Holding horizon | Share | Filers | Change |
|---|---|---|---|
| Short horizon | 16.1% | 21 | +11.2% |
| Medium horizon | 40.6% | 24 | -1.9% |
| Long horizon | 28.1% | 59 | +11.5% |
| Unknown | 15.2% | 10 | +10.6% |
| Not measured | 0.0% | 0 | — |
| 13F book size | Share | Filers | Change |
|---|---|---|---|
| Under $1B | 14.5% | 20 | +11.1% |
| $1B to $10B | 37.1% | 26 | -1.8% |
| $10B to $100B | 14.7% | 22 | +2.2% |
| $100B or more | 33.6% | 46 | +14.0% |
| Not measured | 0.0% | 0 | — |
| Client base | Share | Filers | Change |
|---|---|---|---|
| Individuals and high net worth | 0.1% | 7 | +74.9% |
| Pooled investment vehicles | 42.8% | 22 | +0.1% |
| Registered funds and BDCs | 8.6% | 9 | +11.5% |
| Pension and profit sharing plans | 0.0% | 1 | new |
| Insurance companies | 0.1% | 2 | +22.4% |
| Governments and sovereign funds | 0.1% | 1 | +62.5% |
| Other investment advisers | 0.0% | 1 | +21.0% |
| Diversified | 0.2% | 4 | +16452.7% |
| Unknown | 48.2% | 67 | +9.0% |
| Private funds | Share | Filers | Change |
|---|---|---|---|
| Hedge funds | 29.7% | 21 | +4.4% |
| Private equity funds | 3.8% | 5 | +3.0% |
| Venture capital funds | 9.4% | 2 | -10.6% |
| Real estate funds | 0.0% | 2 | +1200.0% |
| Other private funds | 2.2% | 6 | +7.2% |
| Mixed private funds | 0.1% | 1 | new |
| No private funds | 6.7% | 12 | +15.2% |
| Unknown | 48.0% | 65 | +8.6% |
| Location | Share | Filers | Change |
|---|---|---|---|
| United States | 96.6% | 94 | +4.9% |
| Outside the US | 3.4% | 20 | +26.4% |
The Sep 30, 2026 filing window is still open, so its bar carries the Jun 30, 2026 positions of filers that have not filed yet.
How the mix is measured
Shares are 13F common shares restated to today's split basis; options and principal amounts are left out. The change compares only filers with a 13F in both quarters and keeps each filer in its bucket of the later quarter on both sides; a filer that continues under a new CIK is compared through its successor. Holder type comes from each filer's current regulatory profile; client base and private funds come from the Form ADV roster current at each quarter end (rosters from December 2019, so an earlier quarter reads Unknown). Style, turnover, horizon and book size are measured from each filer's 13F book in the newest measured quarter, and Not measured means none was. Actively managed books are those measured systematic-like, concentrated or diversified active.
Excluded 1 holder with no observed 2026-03-31 13F and 1 holder with no observed 2026-06-30 13F. Compared across CIK changes: JANUS HENDERSON GROUP PLC continues as Jupiter Topco LLC.
Conviction and Crowding
114 13F filers, quarter ended Jun 30, 2026Measured across every 13F filer's common-share book once the quarter's filing window closed. Crowding counts filers with high turnover or that advise private funds on Form ADV.
Managers in the top fifth by current three-year FundScore alpha were net buyers of $5,982,364 (1 buying, 0 selling).
Estimated Holder Cost Basis
Quarter ended Jun 30, 2026, on that quarter's share basisEstimated, never filed: each 13F buy is costed at its quarter's average traded price and each sale keeps the average cost, so this is what holders paid on average if they traded evenly through each quarter.
Estimated cost covers 16.5% of the 13F shares; positions already held when a filer's 13F history starts, or bought in a quarter without a trusted average price, have no estimate.
Shared Holders
Companies LBRX's active holders also own, quarter ended Jun 30, 2026| # | Company | Shared holders |
|---|---|---|
| 1 | AVTX Avalo Therapeutics, Inc. | 13 |
| 2 | TNGX Tango Therapeutics, Inc. | 13 |
| 3 | SRZN Surrozen, Inc./DE | 6 |
| 4 | VOR Vor Biopharma Inc. | 8 |
| 5 | IPSC Century Therapeutics, Inc. | 7 |
| 6 | RLMD Relmada Therapeutics, Inc. | 8 |
| 7 | AURA Aura Biosciences, Inc. | 8 |
| 8 | AMLX Amylyx Pharmaceuticals, Inc. | 9 |
| 9 | NERV Minerva Neurosciences, Inc. | 5 |
| 10 | MLTX MoonLake Immunotherapeutics | 8 |
Shareholder Targets
13F filers that own its peers but not LBRX, quarter ended Jun 30, 2026Found through its holder-overlap peers: AVTX, TNGX, SRZN, VOR, IPSC, RLMD, AURA, AMLX, NERV, MLTX, ELVN, FTH, IVA, EVMN, IFRX, TYRA, EDIT, ALT, JATT, DSGN. 551 filers in all.
| # | Filer | In peers | Largest peers |
|---|---|---|---|
| 1 | RTW INVESTMENTS, LP Registered adviser, Diversified active | $479,036,431 4 held | TNGX, IPSC, EVMN |
| 2 | FARALLON CAPITAL MANAGEMENT LLC Registered adviser, Diversified active | $453,923,810 5 held | TNGX, AVTX, NERV |
| 3 | ORBIMED ADVISORS LLC Registered adviser, Diversified active | $401,400,041 6 held | ELVN, RLMD, AURA |
| 4 | BVF INC/IL Unknown, Concentrated | $399,644,001 4 held | MLTX, TYRA, AVTX |
| 5 | ADAGE CAPITAL PARTNERS GP, L.L.C. Registered adviser, Diversified active | $390,883,350 11 held | TNGX, ELVN, AMLX |
| 6 | Polar Capital Holdings Plc Registered adviser, Diversified active | $385,978,998 4 held | ELVN, TNGX, RLMD |
| 7 | Siren, L.L.C. Unknown, Diversified active | $340,536,977 5 held | TNGX, ELVN, AMLX |
| 8 | Paradigm Biocapital Advisors LP Registered adviser, Concentrated | $322,580,040 5 held | TNGX, TYRA, VOR |
| 9 | PERCEPTIVE ADVISORS LLC Registered adviser, Diversified active | $272,400,054 4 held | AMLX, TNGX, SRZN |
| 10 | Woodline Partners LP Registered adviser, Systematic-like | $242,673,471 15 held | TNGX, ELVN, AMLX |
Fund Ownership of LBRX by Fund Type
Registered funds' Form N-PORT reports for the quarter ended Jun 30, 2026Index funds and index ETFs hold 9.37% of shares outstanding.
| Fund type | Of shares outstanding | Shares |
|---|---|---|
| Index funds | 2.27% | 733,194 |
| Index ETFs | 7.10% | 2,289,243 |
| Active ETFs | 0.19% | 62,672 |
| Active funds | 7.84% | 2,527,771 |
| Unclassified | 0.38% | 122,472 |
| All registered funds | 17.78% | 5,735,352 |
How fund types are measured
Each fund series counts once, with its latest Form N-PORT report dated inside the quarter; only long share positions count, restated to today's split basis. The fund type is the series' latest Form N-CEN answer on or before the quarter end (the index-fund box and the exchange-traded flag), never its name. Unclassified funds have no usable N-CEN; unit investment trusts are among them, so index ownership is a floor. Funds sit inside their advisers' 13F reports, so these shares overlap the 13F figures and are never added to them.
| Holder | Value (USD) | % of 13F | Shares | Type | Filed | Open |
|---|---|---|---|---|---|---|
| Mid Deep Track Capital, LP Adviser | $108,815,253 | 11.27% | 3,352,804 | Shares | 2026-08-14 | |
| Mega BlackRock, Inc. Holding company | $88,741,866 | 9.19% | 2,734,305 | Shares | 2026-08-07 | |
| Large RA CAPITAL MANAGEMENT, L.P. Registered adviser | $71,680,242 | 7.42% | 2,208,604 | Shares | 2026-08-14 | |
| Small Trails Edge Capital Partners, LP | $49,429,679 | 5.12% | 1,523,022 | Shares | 2026-08-14 | |
| Mid Commodore Capital LP Registered adviser | $48,682,500 | 5.04% | 1,500,000 | Shares | 2026-08-14 | |
| Mega JPMORGAN CHASE & CO Bank | $48,594,642 | 5.03% | 1,497,293 | Shares | 2026-08-12 | |
| Mid TCG Crossover Management, LLC | $46,972,446 | 4.86% | 1,447,310 | Shares | 2026-08-14 | |
| Mid Caligan Partners LP Registered adviser | $46,672,561 | 4.83% | 1,438,070 | Shares | 2026-08-14 | |
| Small Spruce Street Capital LP Registered adviser | $44,663,240 | 4.62% | 1,376,159 | Shares | 2026-08-13 | |
| Mid Nantahala Capital Management, LLC Registered adviser | $34,171,674 | 3.54% | 1,052,894 | Shares | 2026-08-19 | |
| Mega VANGUARD CAPITAL MANAGEMENT LLC Registered adviser | $31,519,160 | 3.26% | 971,165 | Shares | 2026-08-13 | |
| Large Balyasny Asset Management L.P. Registered adviser | $29,906,341 | 3.10% | 921,471 | Shares | 2026-08-14 | |
| Large Alyeska Investment Group, L.P. Registered adviser | $28,039,399 | 2.90% | 863,947 | Shares | 2026-08-14 | |
| Mid Vivo Capital, LLC Registered adviser | $25,964,000 | 2.69% | 800,000 | Shares | 2026-08-14 | |
| Small Nan Fung Group Holdings Ltd | $20,467,972 | 2.12% | 630,657 | Shares | 2026-08-13 | |
| Mega GEODE CAPITAL MANAGEMENT, LLC Registered adviser | $19,888,195 | 2.06% | 612,793 | Shares | 2026-08-12 | |
| Mega STATE STREET CORP Bank | $19,538,818 | 2.02% | 602,028 | Shares | 2026-09-22 | |
| Mid Logos Global Management LP Registered adviser | $18,986,175 | 1.97% | 585,000 | Shares | 2026-08-14 | |
| Mega GOLDMAN SACHS GROUP INC Holding company | $18,708,879 | 1.94% | 576,456 | Shares | 2026-08-14 | |
| Mega JENNISON ASSOCIATES LLC Registered adviser | $17,554,974 | 1.82% | 540,902 | Shares | 2026-08-03 | |
| Small GREAT POINT PARTNERS LLC Registered adviser | $10,295,407 | 1.07% | 317,221 | Shares | 2026-08-14 | |
| Mid BOOTHBAY FUND MANAGEMENT, LLC Registered adviser | $8,947,032 | 0.93% | 275,675 | Shares | 2026-08-14 | |
| Mega MILLENNIUM MANAGEMENT LLC Registered adviser | $8,412,952 | 0.87% | 259,219 | Shares | 2026-08-14 | |
| Mega AMERIPRISE FINANCIAL INC Adviser | $7,383,025 | 0.76% | 227,485 | Shares | 2026-08-14 | |
| Mega CITADEL ADVISORS LLC Registered adviser | $7,009,273 | 0.73% | 215,969 | Shares | 2026-09-02 | |
| Small HighVista Strategies LLC Registered adviser | $6,864,589 | 0.71% | 211,511 | Shares | 2026-08-14 | |
| Large BAKER BROS. ADVISORS LP Registered adviser | $6,491,000 | 0.67% | 200,000 | Shares | 2026-08-14 | |
| Mega CHARLES SCHWAB INVESTMENT MANAGEMENT INC Registered adviser | $6,344,498 | 0.66% | 195,486 | Shares | 2026-08-14 | |
| Mega FMR LLC Holding company | $6,130,976 | 0.63% | 188,907 | Shares | 2026-08-13 | |
| Mega NORTHERN TRUST CORP Bank | $6,037,829 | 0.63% | 186,037 | Shares | 2026-08-13 | |
| Mid Eversept Partners, LP Registered adviser | $5,960,782 | 0.62% | 183,663 | Shares | 2026-08-14 | |
| Mega VANGUARD FIDUCIARY TRUST CO | $5,283,706 | 0.55% | 162,801 | Shares | 2026-08-13 | |
| Mega VANGUARD PORTFOLIO MANAGEMENT LLC Registered adviser | $4,938,417 | 0.51% | 152,162 | Shares | 2026-08-13 | |
| Mid Integral Health Asset Management, LLC Registered adviser | $4,868,250 | 0.50% | 150,000 | Shares | 2026-08-14 | |
| Mega RAYMOND JAMES FINANCIAL INC | $2,974,695 | 0.31% | 91,656 | Shares | 2026-08-14 | |
| Mega BNP PARIBAS ARBITRAGE, SA Non-US | $2,803,170 | 0.29% | 86,371 | Shares | 2026-08-13 | |
| Mega UBS Group AG Bank | $2,789,539 | 0.29% | 85,951 | Shares | 2026-08-13 | |
| Small Longbow Finance SA | $2,672,214 | 0.28% | 82,336 | Shares | 2026-07-29 | |
| Mid Boxer Capital Management, LLC Registered adviser | $2,271,850 | 0.24% | 70,000 | Shares | 2026-08-14 | |
| Small NEXTBio Capital Management LP | $2,215,021 | 0.23% | 68,249 | Shares | 2026-08-14 | |
| Mega WELLINGTON MANAGEMENT GROUP LLP Holding company | $1,911,305 | 0.20% | 58,891 | Shares | 2026-08-14 | |
| Mega Bank of New York Mellon Corp Bank | $1,784,341 | 0.18% | 54,979 | Shares | 2026-08-06 | |
| Mid ALERUS FINANCIAL NA | $1,781,487 | 0.18% | 54,891 | Shares | 2026-08-14 | |
| Mega Nuveen, LLC | $1,692,267 | 0.18% | 52,142 | Shares | 2026-08-11 | |
| Mega MORGAN STANLEY Holding company | $1,661,920 | 0.17% | 51,207 | Shares | 2026-08-13 | |
| Mega TWO SIGMA INVESTMENTS, LP Registered adviser | $1,579,000 | 0.16% | 48,652 | Shares | 2026-08-14 | |
| Mid XTX Topco Ltd | $1,525,579 | 0.16% | 47,006 | Shares | 2026-08-14 | |
| Mid Y-Intercept (Hong Kong) Ltd Exempt adviser | $1,422,976 | 0.15% | 37,076 | Shares | 2026-10-16 | |
| Mega Russell Investments Group, Ltd. | $1,105,869 | 0.11% | 34,074 | Shares | 2026-08-06 | |
| Small STEMPOINT CAPITAL LP Registered adviser | $1,031,582 | 0.11% | 31,785 | Shares | 2026-08-14 | |
| Large GREAT LAKES ADVISORS, LLC Registered adviser | $986,956 | 0.10% | 30,410 | Shares | 2026-08-10 | |
| Mega Swiss National Bank | $980,141 | 0.10% | 30,200 | Shares | 2026-08-11 | |
| Large ALPS ADVISORS INC Registered adviser | $944,505 | 0.10% | 29,102 | Shares | 2026-07-29 | |
| Small ACUTA CAPITAL PARTNERS, LLC Adviser | $938,566 | 0.10% | 28,919 | Shares | 2026-08-14 | |
| Mega RHUMBLINE ADVISERS Registered adviser | $901,891 | 0.09% | 27,789 | Shares | 2026-08-12 | |
| Mega ALLIANCEBERNSTEIN L.P. Registered adviser | $895,758 | 0.09% | 27,600 | Shares | 2026-08-14 | |
| Mega BANK OF AMERICA CORP /DE/ Bank | $861,355 | 0.09% | 26,540 | Shares | 2026-08-14 | |
| Large Quadrature Capital Ltd | $777,459 | 0.08% | 23,955 | Shares | 2026-08-07 | |
| Mega AMERICAN CENTURY COMPANIES INC | $744,030 | 0.08% | 22,925 | Shares | 2026-08-12 | |
| Mega DEUTSCHE BANK AG\ Non-US | $713,100 | 0.07% | 21,972 | Shares | 2026-08-07 | |
| Large Focus Partners Wealth Registered adviser | $635,241 | 0.07% | 19,573 | Shares | 2026-08-12 | |
| Mega WELLS FARGO & COMPANY/MN Bank | $634,073 | 0.07% | 19,537 | Shares | 2026-08-14 | |
| Large Calamos Advisors LLC Registered adviser | $623,070 | 0.06% | 19,198 | Shares | 2026-07-31 | |
| Mega PRICE T ROWE ASSOCIATES INC /MD/ Registered adviser | $604,377 | 0.06% | 18,622 | Shares | 2026-08-14 | |
| Large HRT FINANCIAL LP | $562,282 | 0.06% | 17,325 | Shares | 2026-08-14 | |
| Mega CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM Benefit plan | $531,547 | 0.06% | 16,378 | Shares | 2026-08-24 | |
| Mega CITIGROUP INC Bank | $510,159 | 0.05% | 15,719 | Shares | 2026-08-03 | |
| Mid MEYER HANDELMAN CO | $489,875 | 0.05% | 15,094 | Shares | 2026-08-03 | |
| Mid HOLLENCREST CAPITAL MANAGEMENT Registered adviser | $445,347 | 0.05% | 13,722 | Shares | 2026-08-13 | |
| Mega D. E. Shaw & Co., Inc. | $438,726 | 0.05% | 13,518 | Shares | 2026-08-14 | |
| Large MetLife Investment Management, LLC Registered adviser | $437,136 | 0.05% | 13,469 | Shares | 2026-08-14 | |
| Small Knott David M Jr | $420,779 | 0.04% | 12,965 | Shares | 2026-08-12 | |
| Mega SEI INVESTMENTS CO | $409,289 | 0.04% | 12,611 | Shares | 2026-08-14 | |
| Mid Virtu Financial LLC | $397,898 | 0.04% | 12,260 | Shares | 2026-08-13 | |
| Mega Invesco Ltd. Adviser | $389,491 | 0.04% | 12,001 | Shares | 2026-08-14 | |
| Small Virtus Investment Advisers, LLC Registered adviser | $373,654 | 0.04% | 11,513 | Shares | 2026-08-11 | |
| Mega VANGUARD ASSET MANAGEMENT, Ltd | $342,075 | 0.04% | 10,540 | Shares | 2026-08-13 | |
| Large MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | $334,481 | 0.03% | 10,306 | Shares | 2026-08-14 | |
| Mega Legal & General Group Plc | $319,291 | 0.03% | 9,838 | Shares | 2026-08-14 | |
| Large NEW YORK STATE COMMON RETIREMENT FUND | $305,077 | 0.03% | 9,400 | Shares | 2026-07-29 | |
| Mega Jupiter Topco LLC | $301,831 | 0.03% | 9,300 | Shares | 2026-08-14 | |
| Mega BARCLAYS PLC Bank | $289,757 | 0.03% | 8,928 | Shares | 2026-08-14 | |
| Mega Vanguard Global Advisers, LLC Registered adviser | $284,078 | 0.03% | 8,753 | Shares | 2026-08-13 | |
| Mid Jump Financial, LLC | $227,769 | 0.02% | 7,018 | Shares | 2026-08-13 | |
| Small Verdad Advisers, LP | $222,868 | 0.02% | 6,867 | Shares | 2026-08-14 | |
| Mega MANUFACTURERS LIFE INSURANCE COMPANY, THE | $202,908 | 0.02% | 6,252 | Shares | 2026-09-09 | |
| Large Police & Firemen's Retirement System of New Jersey | $196,060 | 0.02% | 6,041 | Shares | 2026-07-23 | |
| Mid Aquatic Capital Management LLC Registered adviser | $193,301 | 0.02% | 5,956 | Shares | 2026-08-14 | |
| Large Vanguard Investments Australia, Ltd. | $165,682 | 0.02% | 5,105 | Shares | 2026-08-13 | |
| Small Persistent Asset Partners Ltd Exempt adviser | $159,873 | 0.02% | 4,926 | Shares | 2026-08-07 | |
| Large KLP KAPITALFORVALTNING AS | $110,347 | 0.01% | 3,400 | Shares | 2026-08-12 | |
| Large LOS ANGELES CAPITAL MANAGEMENT LLC Registered adviser | $85,356 | 0.01% | 2,630 | Shares | 2026-08-13 | |
| Large FEDERATED HERMES, INC. Adviser | $81,137 | 0.01% | 2,500 | Shares | 2026-08-12 | |
| Mid Ameritas Investment Partners, Inc. Registered adviser | $65,916 | 0.01% | 2,031 | Shares | 2026-08-13 | |
| Mega Mitsubishi UFJ Asset Management Co., Ltd. | $45,437 | 0.00% | 1,400 | Shares | 2026-08-07 | |
| Small Pinnacle Wealth Planning Services, Inc. Registered adviser | $42,645 | 0.00% | 1,314 | Shares | 2026-08-07 | |
| Large NISA INVESTMENT ADVISORS, LLC Registered adviser | $27,096 | 0.00% | 706 | Shares | 2026-10-20 | |
| Mid Tower Research Capital LLC (TRC) | $24,729 | 0.00% | 762 | Shares | 2026-08-11 | |
| Mega ROYAL BANK OF CANADA Bank | $22,653 | 0.00% | 698 | Shares | 2026-08-14 | |
| Large FIFTH THIRD BANCORP Bank | $12,657 | 0.00% | 390 | Shares | 2026-08-05 |
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