LNTH Institutional Ownership & Shareholders
LANTHEUS HOLDINGS INC (LNTH) is currently held by 430 institutional investors tracked by InsiderSet, with a combined reported market value of approximately $7.24B based on the latest available SEC Form 13F filings for the quarter ended June 30, 2026.
Blackrock, Inc. is currently the largest disclosed institutional shareholder of LNTH tracked by InsiderSet, reporting ownership valued at approximately $931.63M in its June 30, 2026 SEC Form 13F filing. Based on current market prices and the latest disclosed share count, the position is now estimated to be worth approximately $842.37M, representing an estimated loss of -9.58% since the filing period.
The top 10 institutional shareholders tracked on this page collectively account for approximately 50% of the total disclosed LNTH value among the investors covered in this analysis. Major shareholders include Blackrock, Inc., Fmr Llc, Janus Henderson Group Plc, and several other long-term asset managers with concentrated positions in LANTHEUS HOLDINGS INC (LNTH).
This page ranks the largest institutional LNTH shareholders using publicly disclosed SEC Form 13F data, including reported values, estimated current holding values, portfolio allocation percentages, ownership concentration metrics, and historical holding changes across major hedge funds and investment firms.
Institutional Holders
430
Total Reported Value
$7.24B
Largest Holder
Blackrock, Inc.
Largest Position
$931.63M
Insider Transactions (90d)
3
Latest Filing Quarter
Q2 2026
New Institutional Positions
58
Funds Exiting Positions
0
| Name | Investor/Manager | Portfolio % | Quantity | Reported Balance | Current Estimated Value | Gain/loss Since Filing | Estimated Portfolio Performance |
|---|---|---|---|---|---|---|---|
| Blackrock, Inc. | 0.01% | 8,397,642 | $931,634,407 | $842,367,469 | -$89,266,938 | -9.58% | |
| Fmr Llc | 0.02% | 3,879,971 | $430,443,947 | $389,199,891 | -$41,244,056 | -9.58% | |
| Janus Henderson Group Plc | 0.18% | 4,774,841 | $362,171,897 | $478,964,301 | +$116,792,404 | +32.25% | |
| Vanguard Portfolio Management Llc | 0.02% | 3,238,471 | $359,275,973 | $324,851,026 | -$34,424,947 | -9.58% | |
| Vanguard Capital Management Llc | 0.01% | 2,932,214 | $325,299,821 | $294,130,386 | -$31,169,435 | -9.58% | |
| American Century Companies Inc | 0.14% | 2,816,547 | $312,467,724 | $282,527,830 | -$29,939,894 | -9.58% | |
| State Street Corp | 0.01% | 2,500,696 | $277,427,214 | $250,844,816 | -$26,582,398 | -9.58% | |
| Price T Rowe Associates Inc | 0.02% | 1,903,354 | $211,159,000 | $190,925,440 | -$20,233,560 | -9.58% | |
| Geode Capital Management, Llc | 0.01% | 1,841,367 | $204,315,435 | $184,707,524 | -$19,607,911 | -9.60% | |
| Morgan Stanley | 0.01% | 1,726,303 | $191,516,192 | $173,165,454 | -$18,350,738 | -9.58% | |
| Dimensional Fund Advisors Lp | 0.03% | 1,466,260 | $162,661,393 | $147,080,541 | -$15,580,852 | -9.58% | |
| Citadel Advisors Llc | 0.09% | 1,376,480 | $152,706,691 | $138,074,709 | -$14,631,982 | -9.58% | |
| Carmignac Gestion | 1.93% | 1,340,100 | $148,670,694 | $134,425,431 | -$14,245,263 | -9.58% | |
| Reinhart Partners, Llc. | 2.92% | 1,207,900 | $120,222,287 | $121,164,449 | +$942,162 | +0.78% | |
| Wellington Management Group Llp | 0.02% | 1,013,063 | $112,389,209 | $101,620,350 | -$10,768,859 | -9.58% | |
| Swedbank Ab | 0.09% | 1,025,543 | $102,072,295 | $102,872,218 | +$799,923 | +0.78% | |
| Brown Advisory Inc | 0.16% | 915,683 | $101,585,874 | $91,852,162 | -$9,733,712 | -9.58% | |
| Ubs Group Ag | 0.01% | 835,494 | $92,689,704 | $83,808,403 | -$8,881,301 | -9.58% | |
| Northern Trust Corp | 0.01% | 818,394 | $90,792,631 | $82,093,102 | -$8,699,529 | -9.58% | |
| Goldman Sachs Group Inc | 0.01% | 814,096 | $90,315,778 | $81,661,970 | -$8,653,808 | -9.58% | |
| Marshall Wace, Llp | 0.07% | 773,978 | $85,865,119 | $77,637,733 | -$8,227,386 | -9.58% | |
| Deerfield Management Company, L.P. | 0.87% | 752,999 | $83,537,709 | $75,533,330 | -$8,004,379 | -9.58% | |
| Jacobs Levy Equity Management, Inc | 0.28% | 699,583 | $77,611,738 | $70,175,171 | -$7,436,567 | -9.58% | |
| Jpmorgan Chase & Co | 0.00% | 699,229 | $76,952,885 | $70,139,661 | -$6,813,224 | -8.85% | |
| Nomura Asset Management International Inc. | 0.11% | 671,042 | $74,445,000 | $67,312,223 | -$7,132,777 | -9.58% | |
| Charles Schwab Investment Management Inc | 0.01% | 665,457 | $73,825,800 | $66,751,992 | -$7,073,808 | -9.58% | |
| Td Asset Management Inc | 0.06% | 653,736 | $72,525,472 | $65,576,258 | -$6,949,214 | -9.58% | |
| Point72 Asset Management, L.P. | 0.11% | 629,806 | $69,870,678 | $63,175,840 | -$6,694,838 | -9.58% | |
| Ameriprise Financial Inc | 0.01% | 619,298 | $68,705,129 | $62,121,782 | -$6,583,347 | -9.58% | |
| Norges Bank | 0.01% | 586,845 | $65,104,584 | $58,866,422 | -$6,238,162 | -9.58% | |
| Holocene Advisors, Lp | 0.14% | 546,961 | $60,679,853 | $54,865,658 | -$5,814,195 | -9.58% | |
| Boston Partners | 0.05% | 500,622 | $55,068,880 | $50,217,393 | -$4,851,487 | -8.81% | |
| Victory Capital Management Inc | 0.03% | 470,051 | $52,147,457 | $47,150,816 | -$4,996,641 | -9.58% | |
| Vanguard Fiduciary Trust Co | 0.01% | 466,076 | $51,706,471 | $46,752,084 | -$4,954,387 | -9.58% | |
| Bank Of New York Mellon Corp | 0.01% | 441,831 | $49,016,754 | $44,320,068 | -$4,696,686 | -9.58% | |
| Summit Street Capital Management, Llc | 6.24% | 400,699 | $44,453,546 | $40,194,117 | -$4,259,429 | -9.58% | |
| Epoch Investment Partners, Inc. | 0.24% | 386,993 | $42,933,003 | $38,819,268 | -$4,113,735 | -9.58% | |
| Voya Investment Management Llc | 0.04% | 370,571 | $41,111,146 | $37,171,977 | -$3,939,169 | -9.58% | |
| Private Capital Management, Llc | 3.60% | 358,224 | $39,741,371 | $35,933,449 | -$3,807,922 | -9.58% | |
| Polaris Capital Management, Llc | 4.13% | 395,900 | $39,403,927 | $39,712,729 | +$308,802 | +0.78% | |
| Millennium Management Llc | 0.03% | 336,399 | $37,320,105 | $33,744,184 | -$3,575,921 | -9.58% | |
| Ubs Am, A Distinct Business Unit Of Ubs Asset Management Americas Llc | 0.01% | 486,498 | $36,900,874 | $48,800,614 | +$11,899,740 | +32.25% | |
| Bank Of America Corp | 0.00% | 330,268 | $36,639,903 | $33,129,183 | -$3,510,720 | -9.58% | |
| Brigade Capital Management, Lp | 23.86% | 328,745 | $36,484,120 | $32,976,411 | -$3,507,709 | -9.61% | |
| Bnp Paribas Financial Markets | 0.02% | 300,967 | $33,389,279 | $30,190,000 | -$3,199,279 | -9.58% | |
| Portolan Capital Management, Llc | 1.20% | 288,691 | $32,027,380 | $28,958,594 | -$3,068,786 | -9.58% | |
| Principal Financial Group Inc | 0.02% | 312,113 | $31,064,607 | $31,308,055 | +$243,448 | +0.78% | |
| Balyasny Asset Management L.P. | 0.06% | 277,821 | $30,821,462 | $27,868,225 | -$2,953,237 | -9.58% | |
| Silvercrest Asset Management Group Llc | 0.20% | 270,710 | $30,032,818 | $27,154,920 | -$2,877,898 | -9.58% | |
| Aqr Capital Management Llc | 0.01% | 261,248 | $28,579,225 | $26,205,787 | -$2,373,438 | -8.30% |
Frequently asked questions about LNTH
Who are the largest institutional holders of LNTH?
The largest institutional holders of LNTH reported in the latest SEC Form 13F filings include Blackrock, Inc., Fmr Llc, Janus Henderson Group Plc, Vanguard Portfolio Management Llc, and Vanguard Capital Management Llc. InsiderSet ranks institutional holders by their latest reported LNTH position.
What is LNTH institutional ownership?
This page tracks LNTH positions reported by institutional investment managers through SEC Form 13F. LANTHEUS HOLDINGS INC (LNTH) institutional ownership on InsiderSet reflects disclosed 13F holdings among the managers we analyze, not every shareholder of the stock.
How many institutions own LNTH?
InsiderSet currently tracks 430 institutional managers reporting LNTH holdings in the latest available 13F data. This count reflects institutions included in the SEC Form 13F filings analyzed by InsiderSet and should not be interpreted as the total number of LNTH shareholders.
How much LNTH stock do institutions own?
Institutional investment managers disclosed approximately $7.24B in LNTH holdings for Q2 2026. This figure is reported 13F value as of the filing period, not necessarily today's market value.
When was LNTH institutional ownership last updated?
The latest LNTH institutional ownership data on InsiderSet is based on SEC Form 13F filings for the quarter ended June 30, 2026. Form 13F filings are generally reported after the quarter ends, so the holdings shown represent the latest publicly disclosed positions rather than real-time institutional holdings.
Are institutional LNTH holdings real-time?
No. Form 13F data is not real-time. It represents positions reported by institutional investment managers as of the end of the reporting quarter. An institution may have changed its LNTH position after the reporting date.
Are institutions buying or selling LNTH?
Institutional buying and selling can be analyzed by comparing LNTH positions across consecutive 13F reporting periods. InsiderSet's LNTH Ownership Changes page shows institutions that increased, reduced, initiated, or exited positions based on reported 13F holdings. View LNTH ownership changes.
How has LNTH institutional ownership changed over time?
InsiderSet tracks LNTH institutional holdings across multiple 13F reporting periods, allowing investors to compare institutional holder counts, reported value, and reported shares over time.