Polar Asset Management Partners’s Lantheus LNTH Stock Holding History

Polar Asset Management Partners’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
2025 Q3	–	Sell	-17,399	Closed	-$1.42M	–	752
2025 Q2	$1.42M	Sell	17,399 -17,269	-50%	-$1.52M	0.02%	338
2025 Q1	$3.38M	Buy	+34,668	New	+$3.24M	0.08%	224
2024 Q1	–	Sell	-12,100	Closed	-$750K	–	839
2023 Q4	$750K	Sell	12,100 -69,600	-85%	-$4.72M	0.01%	448
2023 Q3	$5.68M	Buy	+81,700	New	+$5.98M	0.13%	205
2023 Q1	–	Sell	-44,900	Closed	-$2.29M	–	1109
2022 Q4	$2.29M	Buy	+44,900	New	+$2.77M	0.03%	605
2022 Q3	–	Sell	-553,272	Closed	-$36.5M	–	1448
2022 Q2	$36.5M	Sell	553,272 -326,600	-37%	-$20.6M	0.43%	32
2022 Q1	$48.7M	Sell	879,872 -512,000	-37%	-$19.2M	0.52%	24
2021 Q4	$40.2M	Sell	1,391,872 -121,186	-8%	-$3.22M	0.43%	38
2021 Q3	$38.9M	Buy	1,513,058 +624,459	+70%	+$16.3M	0.38%	46
2021 Q2	$24.6M	Buy	+888,599	New	+$20.4M	0.25%	86

Other funds holding LNTH

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

Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 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

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

FCM

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

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

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

Dimensional Fund Advisors Austin, Texas $481B AUM 30.42% 1-Year Est. Return

Reinhart Partners Mequon, Wisconsin $4.38B AUM 55.55% 1-Year Est. Return

Polar Asset Management Partners's LNTH Position: Q3 2025 in Review

Polar Asset Management Partners sold out of Lantheus (LNTH) in Q3 2025, closing a stake of 17,399 shares — an estimated $1.42M sold.

Polar Asset Management Partners first reported a position in LNTH in Q2 2021 and held it in 10 quarters. The position peaked at $48.7M in Q1 2022. 418 funds tracked by Wall St. Rank hold LNTH as of Q3 2025.

Polar Asset Management Partners reported no remaining Lantheus position as of Q3 2025 after selling out during the quarter.
Polar Asset Management Partners sold 17,399 Lantheus shares in Q3 2025, an estimated $1.42M.
Polar Asset Management Partners first reported a position in Lantheus in Q2 2021 and held it in 10 quarters.
Polar Asset Management Partners's Lantheus position peaked at $48.7M in Q1 2022.
418 funds tracked by Wall St. Rank held Lantheus as of Q3 2025.

Based on Polar Asset Management Partners's 13F filing for Q3 2025, filed 14 Nov 2025.