First Manhattan’s Lantheus LNTH Stock Holding History

First Manhattan’s Portfolio LNTH Stock Details LNTH Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q1	$328K	Hold	4,324	–	–	﹤0.01%	646
2025 Q4	$288K	Hold	4,324	–	–	﹤0.01%	653
2025 Q3	$222K	Hold	4,324	–	–	﹤0.01%	667
2025 Q2	$354K	Hold	4,324	–	–	﹤0.01%	595
2025 Q1	$422K	Hold	4,324	–	–	﹤0.01%	531
2024 Q4	$387K	Hold	4,324	–	–	﹤0.01%	551
2024 Q3	$475K	Hold	4,324	–	–	﹤0.01%	500
2024 Q2	$347K	Hold	4,324	–	–	﹤0.01%	546
2024 Q1	$269K	Hold	4,324	–	–	﹤0.01%	607
2023 Q4	$268K	Hold	4,324	–	–	﹤0.01%	593
2023 Q3	$300K	Hold	4,324	–	–	﹤0.01%	577
2023 Q2	$363K	Hold	4,324	–	–	﹤0.01%	552
2023 Q1	$357K	Hold	4,324	–	–	﹤0.01%	568
2022 Q4	$220K	Hold	4,324	–	–	﹤0.01%	679
2022 Q3	$304K	Hold	4,324	–	–	﹤0.01%	607
2022 Q2	$285K	Hold	4,324	–	–	﹤0.01%	644
2022 Q1	$239K	Hold	4,324	–	–	﹤0.01%	731
2021 Q4	$124K	Hold	4,324	–	–	﹤0.01%	833
2021 Q3	$111K	Buy	4,324 +1,224	+39%	+$32K	﹤0.01%	844
2021 Q2	$85K	Buy	+3,100	New	+$71.1K	﹤0.01%	884

Other funds holding LNTH

BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return

FCM

Farallon Capital Management San Francisco, California $17.5B AUM 50.95% 1-Year Est. Return

Janus Henderson Group London, United Kingdom $209B AUM 37.72% 1-Year Est. Return

Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return

VPM

Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM

VCM

Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM

State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return

American Century Companies Kansas City, Missouri $194B AUM 35% 1-Year Est. Return

Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return

Morgan Stanley New York $1.66T AUM 25.57% 1-Year Est. Return

First Manhattan's LNTH Position: Q1 2026 in Review

First Manhattan held its Lantheus (LNTH) position steady in Q1 2026 at 4,324 shares worth $328K. The position accounts for ﹤0.01% of the portfolio, ranked #646.

First Manhattan first reported a position in LNTH in Q2 2021 and has held it in 20 quarters since. The position peaked at $475K in Q3 2024. 404 funds tracked by Wall St. Rank hold LNTH as of Q1 2026.

First Manhattan held 4,324 shares of Lantheus worth $328K as of Q1 2026.
First Manhattan left its Lantheus share count unchanged in Q1 2026.
Lantheus made up ﹤0.01% of First Manhattan's portfolio in Q1 2026, its #646 holding.
First Manhattan first reported a position in Lantheus in Q2 2021 and has held it in 20 quarters since.
First Manhattan's Lantheus position peaked at $475K in Q3 2024.
404 funds tracked by Wall St. Rank held Lantheus as of Q1 2026.

Based on First Manhattan's 13F filing for Q1 2026, filed 15 May 2026.