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CSS LLC’s Lantheus LNTH Stock Holding History

CSS LLC’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
Q4 		– Sell
-13,717
Closed -$704K – 1151
2025
Q3 		$704K Buy
13,717
+9,809
+251% +$613K 0.03% 424
2025
Q2 		$320K Buy
+3,908
New +$343K 0.01% 670
2024
Q3 		– Sell
-5,300
Closed -$426K – 925
2024
Q2 		$426K Sell
5,300
-1,100
-17% -$80.7K 0.02% 533
2024
Q1 		$398K Buy
+6,400
New +$377K 0.02% 507
2020
Q3 		– Sell
-91,803
Closed -$1.31M – 840
2020
Q2 		$1.31M Buy
+91,803
New +$1.21M 0.07% 218

Other funds holding LNTH

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Vanguard Group
Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 1-Year Est. Return
Janus Henderson Group
Janus Henderson Group London $209B AUM 37.72% 1-Year Est. Return
FCM
Farallon Capital Management San Francisco, California $21.7B AUM 79.24% 1-Year Est. Return
Fidelity Investments
Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
Morgan Stanley
Morgan Stanley New York $1.89T AUM 35.08% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
RP
Reinhart Partners Mequon, Wisconsin $4.38B AUM 55.55% 1-Year Est. Return
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $552B AUM 44.19% 1-Year Est. Return

CSS LLC's LNTH Position: Q4 2025 in Review

CSS LLC sold out of Lantheus (LNTH) in Q4 2025, closing a stake of 13,717 shares — an estimated $704K sold.

CSS LLC first reported a position in LNTH in Q2 2020 and held it in 5 quarters. The position peaked at $1.31M in Q2 2020. 393 funds tracked by Wall St. Rank hold LNTH as of Q4 2025.

  • CSS LLC reported no remaining Lantheus position as of Q4 2025 after selling out during the quarter.
  • CSS LLC sold 13,717 Lantheus shares in Q4 2025, an estimated $704K.
  • CSS LLC first reported a position in Lantheus in Q2 2020 and held it in 5 quarters.
  • CSS LLC's Lantheus position peaked at $1.31M in Q2 2020.
  • 393 funds tracked by Wall St. Rank held Lantheus as of Q4 2025.

Based on CSS LLC's 13F filing for Q4 2025, filed 17 Feb 2026.