Who owns Lantheus Holdings (LNTH)
Which tracked institutional funds hold LNTH, how they are positioned, and who is buying versus exiting — from SEC Form 13F-HR filings. See LNTH company fundamentals →
Ownership as of the 2026-Q2 13F filings (latest filed 2026-09-22). 13F is disclosed up to 45 days after quarter-end, so the most recent quarter fills in over the following weeks.
Conviction spread
LNTH’s largest tracked holder by dollar value, BlackRock, Inc., sizes it at 0.0% of its own reported 13F book, while the median holder sizes it at 0.0% of theirs — a 0.0pp gap the other way — the median holder sizes LNTH more heavily than its largest holder by dollar value does.
Book-share is each fund’s reported value in LNTH divided by its whole reported 13F book, so it is comparable across funds of different sizes and is unaffected by stock splits. A higher share means a fund has committed more of its book to the name — a starting question about conviction, not a verdict or a signal to trade.
Institutional & insider positioning
Between 2026-Q1 and 2026-Q2, we do not read how tracked institutions changed their LNTH positions: many holders could not be matched across the two filings, most often because the security’s identifier changed and our mapping is incomplete, or because funds are still filing for the newer quarter. Over the same quarter, there were no open-market insider Form 4s.
This fuses two public signals for the same quarter — how tracked institutions changed their positions and whether insiders bought or sold in the open market. It describes what was filed; it is a starting question, not a verdict or a signal to trade.
New buyers & exits
Institutional holders
One row per tracked fund, most shares held first (every row is from one quarter; reported value breaks ties). “% of value” is the fund’s share of this security’s tracked institutional value — not of shares outstanding.
| Fund | Shares | Reported value | % of value | Quarter |
|---|---|---|---|---|
| Ovata Capital Management Ltd new | 18,500,000 | $27M | 0.3% | 2026-Q2 |
| ABSOLUTE INVESTMENT ADVISERS, LLC added | 10,600,000 | $15M | 0.2% | 2026-Q2 |
| BlackRock, Inc. added | 8,397,642 | $932M | 11.6% | 2026-Q2 |
| FARALLON CAPITAL MANAGEMENT, L.L.C. | 5,583,479 | $619M | 7.7% | 2026-Q2 |
| Jupiter Topco LLC new | 5,188,416 | $576M | 7.2% | 2026-Q2 |
| FMR LLC trimmed | 3,879,971 | $430M | 5.4% | 2026-Q2 |
| VANGUARD PORTFOLIO MANAGEMENT LLC added | 3,238,471 | $359M | 4.5% | 2026-Q2 |
| VANGUARD CAPITAL MANAGEMENT LLC added | 2,932,214 | $325M | 4.1% | 2026-Q2 |
| AMERICAN CENTURY COMPANIES INC added | 2,816,547 | $312M | 3.9% | 2026-Q2 |
| STATE STREET CORP added | 2,500,696 | $277M | 3.5% | 2026-Q2 |
| PRICE T ROWE ASSOCIATES INC /MD/ added | 1,903,354 | $211M | 2.6% | 2026-Q2 |
| GEODE CAPITAL MANAGEMENT, LLC added | 1,841,367 | $204M | 2.6% | 2026-Q2 |
| MORGAN STANLEY added | 1,726,303 | $192M | 2.4% | 2026-Q2 |
| REINHART PARTNERS, LLC. added | 1,599,379 | $177M | 2.2% | 2026-Q2 |
| DIMENSIONAL FUND ADVISORS LP added | 1,466,260 | $163M | 2.0% | 2026-Q2 |
| CITADEL ADVISORS LLC added | 1,376,480 | $153M | 1.9% | 2026-Q2 |
| Carmignac Gestion added | 1,340,100 | $149M | 1.9% | 2026-Q2 |
| Swedbank AB trimmed | 1,201,243 | $133M | 1.7% | 2026-Q2 |
| WELLINGTON MANAGEMENT GROUP LLP added | 1,013,063 | $112M | 1.4% | 2026-Q2 |
| BROWN ADVISORY INC added | 915,683 | $102M | 1.3% | 2026-Q2 |
| UBS Group AG trimmed | 835,494 | $93M | 1.2% | 2026-Q2 |
| NORTHERN TRUST CORP added | 818,394 | $91M | 1.1% | 2026-Q2 |
| GOLDMAN SACHS GROUP INC added | 814,096 | $90M | 1.1% | 2026-Q2 |
| MARSHALL WACE, LLP added | 773,978 | $86M | 1.1% | 2026-Q2 |
| DEERFIELD MANAGEMENT COMPANY, L.P. trimmed | 752,999 | $84M | 1.0% | 2026-Q2 |
| Assenagon Asset Management S.A. added | 714,980 | $79M | 1.0% | 2026-Q2 |
| JACOBS LEVY EQUITY MANAGEMENT, INC added | 699,583 | $78M | 1.0% | 2026-Q2 |
| JPMORGAN CHASE & CO trimmed | 699,229 | $77M | 1.0% | 2026-Q2 |
| NOMURA ASSET MANAGEMENT INTERNATIONAL INC. trimmed | 671,042 | $74M | 0.9% | 2026-Q2 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC added | 665,457 | $74M | 0.9% | 2026-Q2 |
| TD Asset Management Inc trimmed | 653,736 | $73M | 0.9% | 2026-Q2 |
| Point72 Asset Management, L.P. trimmed | 629,806 | $70M | 0.9% | 2026-Q2 |
| AMERIPRISE FINANCIAL INC added | 619,298 | $69M | 0.9% | 2026-Q2 |
| NORGES BANK added | 586,845 | $65M | 0.8% | 2026-Q2 |
| Holocene Advisors, LP new | 546,961 | $61M | 0.8% | 2026-Q2 |
| Boston Partners added | 500,622 | $55M | 0.7% | 2026-Q2 |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC trimmed | 482,743 | $54M | 0.7% | 2026-Q2 |
| VICTORY CAPITAL MANAGEMENT INC added | 470,051 | $52M | 0.7% | 2026-Q2 |
| VANGUARD FIDUCIARY TRUST CO added | 466,076 | $52M | 0.6% | 2026-Q2 |
| Bank of New York Mellon Corp trimmed | 441,831 | $49M | 0.6% | 2026-Q2 |
| Polaris Capital Management, LLC trimmed | 424,500 | $47M | 0.6% | 2026-Q2 |
| Summit Street Capital Management, LLC trimmed | 400,699 | $44M | 0.6% | 2026-Q2 |
| Epoch Investment Partners, Inc. trimmed | 386,993 | $43M | 0.5% | 2026-Q2 |
| VOYA INVESTMENT MANAGEMENT LLC added | 370,571 | $41M | 0.5% | 2026-Q2 |
| Private Capital Management, LLC added | 358,224 | $40M | 0.5% | 2026-Q2 |
| MILLENNIUM MANAGEMENT LLC added | 336,399 | $37M | 0.5% | 2026-Q2 |
| BANK OF AMERICA CORP /DE/ trimmed | 330,268 | $37M | 0.5% | 2026-Q2 |
| BRIGADE CAPITAL MANAGEMENT, LP trimmed | 328,745 | $36M | 0.5% | 2026-Q2 |
| BNP PARIBAS FINANCIAL MARKETS added | 300,967 | $33M | 0.4% | 2026-Q2 |
| Portolan Capital Management, LLC trimmed | 288,691 | $32M | 0.4% | 2026-Q2 |
| BALYASNY ASSET MANAGEMENT L.P. trimmed | 277,821 | $31M | 0.4% | 2026-Q2 |
| SILVERCREST ASSET MANAGEMENT GROUP LLC trimmed | 270,710 | $30M | 0.4% | 2026-Q2 |
| AQR CAPITAL MANAGEMENT LLC added | 261,250 | $29M | 0.4% | 2026-Q2 |
| DEUTSCHE BANK AG\ added | 248,743 | $28M | 0.3% | 2026-Q2 |
| ADAGE CAPITAL PARTNERS GP, L.L.C. trimmed | 246,755 | $27M | 0.3% | 2026-Q2 |
| PRINCIPAL FINANCIAL GROUP INC added | 235,768 | $26M | 0.3% | 2026-Q2 |
| RAYMOND JAMES FINANCIAL INC added | 234,788 | $26M | 0.3% | 2026-Q2 |
| Invesco Ltd. trimmed | 234,745 | $26M | 0.3% | 2026-Q2 |
| WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC trimmed | 232,597 | $26M | 0.3% | 2026-Q2 |
| RHUMBLINE ADVISERS added | 197,060 | $22M | 0.3% | 2026-Q2 |
| Integral Health Asset Management, LLC added | 190,000 | $21M | 0.3% | 2026-Q2 |
| CITIGROUP INC added | 189,692 | $21M | 0.3% | 2026-Q2 |
| Sarissa Capital Management LP | 166,919 | $19M | 0.2% | 2026-Q2 |
| Nuveen, LLC added | 162,208 | $18M | 0.2% | 2026-Q2 |
| Retirement Systems of Alabama trimmed | 160,043 | $18M | 0.2% | 2026-Q2 |
| WELLS FARGO & COMPANY/MN added | 156,526 | $17M | 0.2% | 2026-Q2 |
| Penn Capital Management Company, LLC added | 153,877 | $17M | 0.2% | 2026-Q2 |
| ExodusPoint Capital Management, LP trimmed | 150,033 | $17M | 0.2% | 2026-Q2 |
| Russell Investments Group, Ltd. added | 147,146 | $16M | 0.2% | 2026-Q2 |
| PFM Health Sciences, LP new | 146,403 | $16M | 0.2% | 2026-Q2 |
| LOOMIS SAYLES & CO L P added | 141,424 | $16M | 0.2% | 2026-Q2 |
| HOTCHKIS & WILEY CAPITAL MANAGEMENT LLC trimmed | 139,177 | $15M | 0.2% | 2026-Q2 |
| ALLIANCEBERNSTEIN L.P. trimmed | 133,938 | $10M | 0.1% | 2026-Q2 |
| Defilade Capital Management, L.P. trimmed | 132,662 | $15M | 0.2% | 2026-Q2 |
| Swiss National Bank trimmed | 130,654 | $14M | 0.2% | 2026-Q2 |
| California Public Employees Retirement System trimmed | 130,421 | $14M | 0.2% | 2026-Q2 |
| NEW YORK STATE COMMON RETIREMENT FUND added | 127,334 | $14M | 0.2% | 2026-Q2 |
| STATE OF WISCONSIN INVESTMENT BOARD trimmed | 115,962 | $13M | 0.2% | 2026-Q2 |
| FIL Ltd trimmed | 114,279 | $13M | 0.2% | 2026-Q2 |
| SEI INVESTMENTS CO added | 98,305 | $11M | 0.1% | 2026-Q2 |
| Legal & General Group Plc trimmed | 88,207 | $10M | 0.1% | 2026-Q2 |
| Creative Planning added | 85,571 | $9M | 0.1% | 2026-Q2 |
| FIRST TRUST ADVISORS LP added | 77,457 | $9M | 0.1% | 2026-Q2 |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM trimmed | 76,025 | $8M | 0.1% | 2026-Q2 |
| MetLife Investment Management, LLC added | 68,281 | $8M | 0.1% | 2026-Q2 |
| Stanley-Laman Group, Ltd. trimmed | 67,964 | $8M | 0.1% | 2026-Q2 |
| Focus Partners Wealth trimmed | 67,843 | $8M | 0.1% | 2026-Q2 |
| Bridgewater Associates, LP added | 65,941 | $7M | 0.1% | 2026-Q2 |
| ENVESTNET ASSET MANAGEMENT INC added | 65,841 | $7M | 0.1% | 2026-Q2 |
| 1492 Capital Management LLC added | 65,439 | $7M | 0.1% | 2026-Q2 |
| MANUFACTURERS LIFE INSURANCE COMPANY, THE trimmed | 61,716 | $7M | 0.1% | 2026-Q2 |
| VANGUARD ASSET MANAGEMENT, Ltd added | 61,298 | $7M | 0.1% | 2026-Q2 |
| DANSKE BANK A/S added | 60,756 | $7M | 0.1% | 2026-Q2 |
| Man Group plc trimmed | 54,815 | $6M | 0.1% | 2026-Q2 |
| Lido Advisors, LLC trimmed | 49,202 | $5M | 0.1% | 2026-Q2 |
| Universal- Beteiligungs- und Servicegesellschaft mbH trimmed | 48,508 | $5M | 0.1% | 2026-Q2 |
| MUTUAL OF AMERICA CAPITAL MANAGEMENT LLC trimmed | 46,852 | $5M | 0.1% | 2026-Q2 |
| STATE BOARD OF ADMINISTRATION OF FLORIDA RETIREMENT SYSTEM trimmed | 45,365 | $5M | 0.1% | 2026-Q2 |
| INTECH INVESTMENT MANAGEMENT LLC trimmed | 44,458 | $5M | 0.1% | 2026-Q2 |
| SkyOak Wealth, LLC trimmed | 44,419 | $5M | 0.1% | 2026-Q2 |
Ownership over time
Tracked institutional holder count and total shares held by filing quarter (independent scales). The curated-era tail and any mid-ingest latest quarter are handled honestly — a partial quarter is not drawn as a collapse.
Reading this table
Funds hold the same stock for different reasons — an index fund “holds” almost everything, an active manager sizes a name to a mandate and a benchmark, and each fund entered at its own price and time. Because 13F is filed up to 45 days after quarter-end, every row is a backward-looking snapshot; a manager may have traded since. Share-class siblings (a company’s A and C shares) are rolled up to one line so a dual-class name is never double-counted. Compare like-for-like. A large holder is not an endorsement, and a fund exiting is not a warning — this is a starting question, not a verdict.
About 13F filings
A Form 13F is a quarterly disclosure that institutional investment managers with over $100 million in US-listed equities must file with the SEC. In plain English: it is a snapshot of the long stock positions a fund held at the end of a quarter. It covers long US-listed equities only — not short positions, options, cash, or private holdings — and the funds shown are the large sample we track, not the complete 13F universe.