Jim Simons
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Jim Simons’s Lantheus LNTH Stock Holding History

Jim Simons’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 		$5.85M Buy
77,182
+1,400
+2% +$101K 0.01% 1286
2025
Q4 		$5.04M Buy
75,782
+15,951
+27% +$928K 0.01% 1300
2025
Q3 		$3.07M Buy
+59,831
New +$3.74M ﹤0.01% 1777
2025
Q2 		– Sell
-41,100
Closed -$4.01M – 3752
2025
Q1 		$4.01M Sell
41,100
-68,000
-62% -$6.36M 0.01% 1557
2024
Q4 		$9.76M Sell
109,100
-252,931
-70% -$24.6M 0.01% 1033
2024
Q3 		$39.7M Buy
362,031
+146,600
+68% +$15.2M 0.06% 395
2024
Q2 		$17.3M Buy
215,431
+126,700
+143% +$9.29M 0.03% 657
2024
Q1 		$5.52M Buy
+88,731
New +$5.22M 0.01% 1354
2023
Q4 		– Sell
-251,431
Closed -$17.5M – 3953
2023
Q3 		$17.5M Sell
251,431
-126,900
-34% -$9.28M 0.03% 636
2023
Q2 		$31.8M Buy
378,331
+152,931
+68% +$13.7M 0.05% 459
2023
Q1 		$18.6M Sell
225,400
-257,575
-53% -$16.6M 0.02% 760
2022
Q4 		$24.6M Buy
482,975
+32,544
+7% +$2.01M 0.03% 613
2022
Q3 		$31.7M Buy
450,431
+33,900
+8% +$2.57M 0.04% 469
2022
Q2 		$27.5M Buy
416,531
+129,700
+45% +$8.18M 0.03% 581
2022
Q1 		$15.9M Buy
+286,831
New +$10.8M 0.02% 882
2021
Q4 		– Sell
-27,158
Closed -$697K – 4096
2021
Q3 		$697K Buy
+27,158
New +$709K ﹤0.01% 2737
2021
Q1 		– Sell
-122,831
Closed -$1.66M – 3541
2020
Q4 		$1.66M Sell
122,831
-10,133
-8% -$133K ﹤0.01% 2235
2020
Q3 		$1.69M Sell
132,964
-238,647
-64% -$3.27M ﹤0.01% 2236
2020
Q2 		$5.31M Sell
371,611
-885,989
-70% -$11.7M ﹤0.01% 1611
2020
Q1 		$16M Sell
1,257,600
-148,200
-11% -$2.37M 0.02% 898
2019
Q4 		$28.8M Sell
1,405,800
-230,100
-14% -$4.65M 0.02% 801
2019
Q3 		$41M Sell
1,635,900
-148,400
-8% -$3.65M 0.03% 578
2019
Q2 		$50.5M Buy
1,784,300
+348,700
+24% +$8.85M 0.04% 490
2019
Q1 		$35.1M Buy
1,435,600
+427,800
+42% +$8.55M 0.03% 686
2018
Q4 		$15.8M Sell
1,007,800
-31,100
-3% -$476K 0.02% 1031
2018
Q3 		$15.5M Sell
1,038,900
-94,707
-8% -$1.38M 0.02% 1083
2018
Q2 		$16.5M Buy
1,133,607
+113,607
+11% +$1.75M 0.02% 1043
2018
Q1 		$16.2M Buy
1,020,000
+116,600
+13% +$2.27M 0.02% 1069
2017
Q4 		$18.5M Buy
903,400
+276,300
+44% +$5.63M 0.02% 990
2017
Q3 		$11.2M Sell
627,100
-63,900
-9% -$1.12M 0.01% 1260
2017
Q2 		$12.2M Buy
691,000
+77,200
+13% +$1.14M 0.02% 1144
2017
Q1 		$7.67M Buy
613,800
+220,400
+56% +$2.33M 0.01% 1425
2016
Q4 		$3.38M Buy
393,400
+238,900
+155% +$2.13M 0.01% 1920
2016
Q3 		$1.28M Buy
154,500
+55,200
+56% +$366K ﹤0.01% 2441
2016
Q2 		$364K Buy
+99,300
New +$228K ﹤0.01% 2889

Other funds holding LNTH

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
FCM
Farallon Capital Management San Francisco, California $17.5B AUM 50.95% 1-Year Est. Return
Janus Henderson Group
Janus Henderson Group London, United Kingdom $209B AUM 37.72% 1-Year Est. Return
Fidelity Investments
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
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
American Century Companies
American Century Companies Kansas City, Missouri $226B AUM 44.75% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
Morgan Stanley
Morgan Stanley New York $1.66T AUM 25.57% 1-Year Est. Return

Jim Simons's LNTH Position: Q1 2026 in Review

Jim Simons increased its Lantheus (LNTH) stake by 1.8% in Q1 2026, buying an estimated $101K and bringing the position to 77,182 shares worth $5.85M. The position accounts for 0.01% of the portfolio, ranked #1286.

Jim Simons first reported a position in LNTH in Q2 2016 and has held it in 35 quarters since. The position peaked at $50.5M in Q2 2019. 406 funds tracked by Wall St. Rank hold LNTH as of Q1 2026.

  • Jim Simons held 77,182 shares of Lantheus worth $5.85M as of Q1 2026.
  • Jim Simons bought 1,400 Lantheus shares in Q1 2026, an estimated $101K.
  • Lantheus made up 0.01% of Jim Simons's portfolio in Q1 2026, its #1286 holding.
  • Jim Simons first reported a position in Lantheus in Q2 2016 and has held it in 35 quarters since.
  • Jim Simons's Lantheus position peaked at $50.5M in Q2 2019.
  • 406 funds tracked by Wall St. Rank held Lantheus as of Q1 2026.

Based on Renaissance Technologies's 13F filing for Q1 2026, filed 14 May 2026.