# LANTHEUS HLDGS INC COM

LANTHEUS HLDGS INC COM is a security (CUSIP 516544103) tracked across SEC portfolio filings. 449 institutional managers reported $5.6B on Form 13F as of 2026-06-30; 44 registered fund positions totaling $368.0M via N-PORT as of 2026-05-31.

## Summary

- Issuer: LANTHEUS HLDGS INC
- Class: COM
- CUSIP: 516544103
- Asset category: EC
- 13F holders: 449
- 13F value: $5.6B
- 13F period: 2026-06-30
- N-PORT fund positions: 44
- N-PORT value: $368.0M
- N-PORT report: 2026-05-31

## Top institutional holders (Form 13F)

_Showing 15 of 449 managers by value._

| Manager | Location | Value | Shares |
| --- | --- | --- | --- |
| BlackRock, Inc. | New York, NY | $620.7M | 8,183,193 |
| [VANGUARD GROUP INC](https://search.stillhousedata.com/firm/105958) | Valley Forge, PA | $445.8M | 6,699,381 |
| [FARALLON CAPITAL MANAGEMENT LLC](https://search.stillhousedata.com/firm/107322) | SAN FRANCISCO, CA | $423.5M | 5,583,479 |
| JANUS HENDERSON GROUP PLC | LONDON, X0 | $362.2M | 4,774,841 |
| FMR LLC | BOSTON, MA | $350.9M | 4,626,453 |
| STATE STREET CORP | BOSTON, MA | $184.3M | 2,429,803 |
| [REINHART PARTNERS, LLC.](https://search.stillhousedata.com/firm/106432) | MEQUON, WI | $177.4M | 1,599,379 |
| AMERICAN CENTURY COMPANIES INC | KANSAS CITY, MO | $135.1M | 1,781,106 |
| [GEODE CAPITAL MANAGEMENT, LLC](https://search.stillhousedata.com/firm/115504) | BOSTON, MA | $134.0M | 1,765,952 |
| Swedbank AB | STOCKHOLM, V7 | $133.3M | 1,201,243 |
| MORGAN STANLEY | NEW YORK, NY | $124.9M | 1,646,463 |
| DIMENSIONAL FUND ADVISORS LP | AUSTIN, TX | $104.6M | 1,379,570 |
| Carmignac Gestion | PARIS, I0 | $100.7M | 1,328,000 |
| Assenagon Asset Management S.A. | SENNINGERBERG, N4 | $79.3M | 714,980 |
| [Point72 Asset Management, L.P.](https://search.stillhousedata.com/firm/283077) | Stamford, CT | $74.3M | 974,210 |

## Top fund holders (N-PORT)

_Showing 15 of 44 fund positions by value._

| Fund | Registrant | Value | % of fund |
| --- | --- | --- | --- |
| State Street SPDR S&P MidCap 400SM ETF Trust | SPDR S&P MIDCAP 400 ETF TRUST | $151.6M | 62.62% |
| [VANGUARD EXTENDED MARKET INDEX FUND](https://search.stillhousedata.com/fund/S000002841) | VANGUARD INDEX FUNDS | $56.1M | 6.88% |
| [Janus Henderson Venture Fund](https://search.stillhousedata.com/fund/S000010488) | JANUS INVESTMENT FUND | $34.6M | 112.87% |
| [VANGUARD RUSSELL 2000 INDEX FUND](https://search.stillhousedata.com/fund/S000030003) | VANGUARD SCOTTSDALE FUNDS | $33.3M | 19.02% |
| BBR ALO Fund, LLC. | BBR ALO Fund, LLC. | $15.9M | 86.48% |
| [U.S. MICRO CAP PORTFOLIO](https://search.stillhousedata.com/fund/S000000948) | DFA INVESTMENT DIMENSIONS GROUP INC | $13.7M | 18.32% |
| [T. Rowe Price Health Sciences Fund, Inc.](https://search.stillhousedata.com/fund/S000002088) | T. ROWE PRICE HEALTH SCIENCES FUND, INC. | $9.3M | 8.51% |
| [Master Small Cap Index Series](https://search.stillhousedata.com/fund/S000002716) | Quantitative Master Series LLC | $8.1M | 16.70% |
| [Columbia Mid Cap Index Fund](https://search.stillhousedata.com/fund/S000010826) | COLUMBIA FUNDS SERIES TRUST | $4.7M | 18.51% |
| [HARTFORD SMALL CAP GROWTH HLS FUND](https://search.stillhousedata.com/fund/S000004108) | HARTFORD HLS SERIES FUND II INC | $3.7M | 48.61% |
| BlackRock Health Sciences Term Trust | BlackRock Health Sciences Term Trust | $3.7M | 36.19% |
| Gabelli Healthcare & WellnessRx Trust | Gabelli Healthcare & WellnessRx Trust | $3.6M | 246.12% |
| [Embark Small Cap Equity Fund](https://search.stillhousedata.com/fund/S000083503) | Harbor Funds II | $3.3M | 58.34% |
| [Fidelity Large Cap Value Enhanced Index Fund](https://search.stillhousedata.com/fund/S000015910) | Fidelity Commonwealth Trust II | $3.2M | 5.68% |
| [VANGUARD EXPLORER FUND](https://search.stillhousedata.com/fund/S000002578) | VANGUARD EXPLORER FUND | $2.8M | 1.30% |

## More

- [This page as markdown (for LLM agents)](https://search.stillhousedata.com/security/516544103.md)
- [Search all SEC filings, advisers and people on Adviser Search](https://search.stillhousedata.com/)

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Source: public SEC filing data via Adviser Search (https://search.stillhousedata.com).
Agents: this data is also queryable via MCP tools and read-only SQL — see https://search.stillhousedata.com/llms.txt.