Latest Period
Q1 2026
Security Snapshot
Lantheus Holdings, Inc. - Common Stock (LNTH) Institutional Ownership
CUSIP: 516544103
13F Institutional Holders and Ownership History from Q2 2015 to Q1 2026
Institutions Reporting
399
Shares (Excl. Options)
71,322,196
Price
$75.85
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- Type / Class
- Equity / Common Stock
- Symbol
- LNTH on Nasdaq
- Shares outstanding
- 64,524,878
- Price per share
- $81.17
- All holders as of 31 Mar 2026
- Q1 2026
- Total 13F shares
- 71,322,196
- Total reported value
- $5,406,094,656
- % of total 13F portfolios
- 0.01%
- Share change
- +3,147,211
- Value change
- +$266,888,638
- Number of holders
- 399
- Price from insider filings
- $81.17
Reported Shares, Excluding Options vs Price
Reported Value, Excluding Options
Total Investors
Key facts
- LNTH - Lantheus Holdings, Inc. - Common Stock is tracked under CUSIP 516544103.
- 399 institutions reported positions in Q1 2026.
- 4 significant owners is listed from Schedule 13D/13G reporting.
Change
- Holder count moved from 391 to 399 between Q4 2025 and Q1 2026.
- Reported value moved from $4,615,385,932 to $5,406,094,656.
Research use
- You can quickly see who holds this security, then open quarter and manager detail pages for full evidence.
- 13F and Schedule 13D/13G sections are kept together so you can cross-check institutional and beneficial ownership context.
Evidence
Source: SEC Form 13F
Open SEC Evidence
Latest holder context comes from 399 institutions filings for Q1 2026.
Security key
516544103
Latest holder period
Q1 2026
13F holders
399
13D/G owners
4
CIK / CUSIP context first
Open Q1 2026 holders
LNTH full holder history
Lantheus Holdings, Inc. SEC filings
Lantheus Holdings, Inc. company facts
Lantheus Holdings, Inc. insider transactions
Broader feeds
Recent Quarterly Holder Reports
Open recent reporting periods for CUSIP 516544103:
Significant Owners of Lantheus Holdings, Inc. - Common Stock (LNTH) based on Schedule 13D/G filings
| Filer | Ownership | Change % | Holdings Value | Net Change | Nb Shares | Change % | Reporting Name | Report Period |
|---|---|---|---|---|---|---|---|---|
| JANUS HENDERSON GROUP PLC | 7.4% | -13% | $384,804,436 | -$75,142,600 | 4,774,841 | -16% | JANUS HENDERSON GROUP PLC | 31 Mar 2026 |
| FMR LLC | 6.5% | -12% | $225,651,564 | -$42,273,833 | 4,399,524 | -16% | FMR LLC | 30 Sep 2025 |
| VANGUARD CAPITAL MANAGEMENT LLC | 5.2% | $259,514,252 | 3,421,414 | Vanguard Capital Management | 31 Mar 2026 | |||
| MORGAN STANLEY | 2.5% | -52% | $110,854,948 | -$144,367,275 | 1,640,837 | -57% | Morgan Stanley | 31 Dec 2025 |
As of 31 Mar 2026, 399 institutional investors reported holding 71,322,196 shares of Lantheus Holdings, Inc. - Common Stock (LNTH). This represents 111% of the company’s total 64,524,878 outstanding shares.
Top 25 Institutional Shareholders
The largest institutional shareholders of Lantheus Holdings, Inc. - Common Stock (LNTH) together control 79% of the company’s outstanding shares — a level of ownership often associated with strong institutional conviction and long‑term capital commitment.
| Institution | Ownership % | Shares Held | Share Change % | Portfolio % | Holdings Value |
|---|---|---|---|---|---|
| BlackRock, Inc. | 13% | 8,183,193 | -1% | 0.01% | $620,695,194 |
| FARALLON CAPITAL MANAGEMENT LLC | 8.7% | 5,583,479 | +2.9% | 2.8% | $423,506,882 |
| JANUS HENDERSON GROUP PLC | 7.4% | 4,774,841 | -16% | 0.17% | $362,171,897 |
| FMR LLC | 7.2% | 4,626,453 | +7% | 0.02% | $350,916,434 |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 4.9% | 3,174,274 | 0% | 0.01% | $240,768,683 |
| VANGUARD CAPITAL MANAGEMENT LLC | 4.5% | 2,914,314 | 0% | 0.01% | $221,050,717 |
| STATE STREET CORP | 3.8% | 2,429,803 | +0.11% | 0.01% | $184,300,558 |
| AMERICAN CENTURY COMPANIES INC | 2.8% | 1,781,106 | +132% | 0.07% | $135,096,890 |
| GEODE CAPITAL MANAGEMENT, LLC | 2.7% | 1,765,952 | +2.3% | 0.01% | $133,970,958 |
| MORGAN STANLEY | 2.6% | 1,646,463 | -6.3% | 0.01% | $124,884,266 |
| REINHART PARTNERS, LLC. | 2.4% | 1,564,878 | +0.15% | 3.4% | $118,697,159 |
| DIMENSIONAL FUND ADVISORS LP | 2.1% | 1,379,570 | -2.5% | 0.02% | $104,625,767 |
| Swedbank AB | 1.9% | 1,228,743 | 0% | 0.1% | $93,200,157 |
| TD Asset Management Inc | 1.8% | 1,133,518 | +59% | 0.07% | $85,977,340 |
| Point72 Asset Management, L.P. | 1.5% | 974,210 | -4% | 0.13% | $73,893,829 |
| PRICE T ROWE ASSOCIATES INC /MD/ | 1.4% | 919,732 | +13% | 0.01% | $69,763,000 |
| UBS Group AG | 1.3% | 867,675 | +119% | 0.01% | $65,813,149 |
| NOMURA ASSET MANAGEMENT INTERNATIONAL INC. | 1.3% | 840,417 | -11% | 0.11% | $63,746,000 |
| DEERFIELD MANAGEMENT COMPANY, L.P. | 1.3% | 827,999 | 0% | 0.74% | $62,803,724 |
| NORTHERN TRUST CORP | 1.2% | 804,923 | +0.85% | 0.01% | $61,053,410 |
| WELLINGTON MANAGEMENT GROUP LLP | 1.2% | 768,850 | +561% | 0.01% | $58,317,272 |
| JPMORGAN CHASE & CO | 1.1% | 739,473 | +0.13% | 0% | $54,048,081 |
| MACKENZIE FINANCIAL CORP | 1.1% | 714,561 | +8.6% | 0.07% | $54,199,452 |
| BROWN ADVISORY INC | 1.1% | 687,607 | 0.09% | $52,154,977 | |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 1% | 657,413 | +2.2% | 0.01% | $49,864,776 |
Institutional Holders of Lantheus Holdings, Inc. - Common Stock (LNTH) across Reporting Periods
| Period | Reported Shares, Excl. Options | Value, Excl. Options | Value Change | Price (Median) | Investors |
|---|---|---|---|---|---|
| 2026 Q1 | 71,322,196 | $5,406,094,656 | +$266,888,638 | $75.85 | 399 |
| 2025 Q4 | 69,356,729 | $4,615,385,932 | -$120,234,489 | $66.55 | 391 |
| 2025 Q3 | 71,275,013 | $3,655,826,076 | -$702,884,293 | $51.29 | 414 |
| 2025 Q2 | 81,091,154 | $6,636,283,434 | +$173,389,753 | $81.86 | 471 |
| 2025 Q1 | 78,485,692 | $7,650,596,245 | +$358,282,348 | $97.60 | 519 |
| 2024 Q4 | 74,667,659 | $6,681,281,434 | +$329,054,493 | $89.46 | 481 |
| 2024 Q3 | 70,391,472 | $7,718,986,133 | +$287,753,264 | $109.75 | 494 |
| 2024 Q2 | 68,315,500 | $5,488,611,304 | +$106,027,339 | $80.29 | 445 |
| 2024 Q1 | 67,174,386 | $4,179,441,832 | -$124,321,713 | $62.24 | 399 |
| 2023 Q4 | 69,497,925 | $4,308,552,082 | -$81,165,947 | $62.00 | 397 |
| 2023 Q3 | 70,477,282 | $4,896,250,569 | +$131,735,244 | $69.48 | 392 |
| 2023 Q2 | 68,029,220 | $5,708,609,888 | +$67,862,585 | $83.92 | 429 |
| 2023 Q1 | 67,095,796 | $5,537,157,912 | +$192,713,278 | $82.56 | 383 |
| 2022 Q4 | 66,268,402 | $3,378,087,249 | -$156,520,489 | $50.96 | 364 |
| 2022 Q3 | 67,572,623 | $4,752,555,521 | -$51,621,782 | $70.33 | 347 |
| 2022 Q2 | 67,203,681 | $4,438,480,524 | +$82,473,476 | $66.03 | 315 |
| 2022 Q1 | 66,259,815 | $3,665,460,396 | +$77,255,909 | $55.31 | 270 |
| 2021 Q4 | 64,907,617 | $1,871,923,137 | +$30,559,663 | $28.89 | 195 |
| 2021 Q3 | 62,998,737 | $1,617,570,105 | +$40,213,233 | $25.68 | 176 |
| 2021 Q2 | 64,087,323 | $1,771,044,946 | +$115,879,870 | $27.64 | 190 |
| 2021 Q1 | 61,246,334 | $1,308,918,977 | +$58,477,027 | $21.37 | 158 |
| 2020 Q4 | 58,916,886 | $795,199,618 | +$4,694,652 | $13.49 | 152 |
| 2020 Q3 | 58,571,534 | $742,079,043 | +$11,922,538 | $12.67 | 168 |
| 2020 Q2 | 57,378,114 | $820,595,830 | +$241,341,195 | $14.30 | 184 |
| 2020 Q1 | 40,653,087 | $518,528,999 | +$25,659,256 | $12.76 | 156 |
| 2019 Q4 | 38,542,403 | $788,832,711 | -$15,398,802 | $20.51 | 153 |
| 2019 Q3 | 38,909,413 | $974,882,210 | +$41,898,769 | $25.07 | 164 |
| 2019 Q2 | 37,135,084 | $1,049,617,770 | +$62,104,300 | $28.30 | 192 |
| 2019 Q1 | 36,008,338 | $881,512,123 | +$1,272,111 | $24.48 | 185 |
| 2018 Q4 | 36,162,699 | $565,858,257 | +$1,075,986 | $15.65 | 143 |
| 2018 Q3 | 35,656,095 | $533,021,931 | +$1,251,262 | $14.95 | 144 |
| 2018 Q2 | 35,669,451 | $518,948,893 | -$3,428,809 | $14.55 | 153 |
| 2018 Q1 | 35,728,105 | $568,184,532 | +$21,608,532 | $15.90 | 163 |
| 2017 Q4 | 34,412,822 | $703,937,046 | -$8,917,613 | $20.45 | 163 |
| 2017 Q3 | 34,853,845 | $620,422,493 | +$49,706,660 | $17.80 | 152 |
| 2017 Q2 | 32,066,573 | $566,377,618 | +$146,565,906 | $17.65 | 139 |
| 2017 Q1 | 24,266,659 | $303,375,625 | +$28,499,092 | $12.50 | 95 |
| 2016 Q4 | 22,564,417 | $194,018,706 | +$57,597,557 | $8.60 | 80 |
| 2016 Q3 | 15,782,264 | $130,666,668 | +$41,910,050 | $8.28 | 69 |
| 2016 Q2 | 10,766,698 | $39,511,000 | +$1,279,718 | $3.67 | 38 |
| 2016 Q1 | 11,890,104 | $22,468,000 | -$570,957 | $1.89 | 44 |
| 2015 Q4 | 12,098,711 | $40,884,887 | -$667,907 | $3.38 | 46 |
| 2015 Q3 | 12,076,400 | $51,914,778 | +$872,080 | $4.30 | 40 |
| 2015 Q2 | 11,727,548 | $72,595,000 | +$72,595,000 | $6.19 | 15 |