Ken Griffin
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Ken Griffin’s Fulcrum Therapeutics FULC Stock Holding History

Ken Griffin’s Portfolio FULC Stock Details FULC Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q1 		$9.91M Buy
1,292,486
+85,482
+7% +$793K ﹤0.01% 3271
2025
Q4 		$13.7M Buy
1,207,004
+352,448
+41% +$3.59M ﹤0.01% 2829
2025
Q3 		$7.86M Buy
854,556
+688,322
+414% +$4.98M ﹤0.01% 3604
2025
Q2 		$1.14M Sell
166,234
-208,022
-56% -$1.11M ﹤0.01% 6784
2025
Q1 		$1.08M Buy
374,256
+40,933
+12% +$150K ﹤0.01% 6796
2024
Q4 		$1.57M Sell
333,323
-1,015,470
-75% -$3.75M ﹤0.01% 6132
2024
Q3 		$4.82M Sell
1,348,793
-428,319
-24% -$3.18M ﹤0.01% 4002
2024
Q2 		$11M Buy
1,777,112
+451,733
+34% +$3.42M ﹤0.01% 2656
2024
Q1 		$12.5M Sell
1,325,379
-78,494
-6% -$701K ﹤0.01% 2635
2023
Q4 		$9.48M Buy
1,403,873
+149,689
+12% +$664K ﹤0.01% 2921
2023
Q3 		$5.57M Sell
1,254,184
-250,455
-17% -$1.09M ﹤0.01% 3493
2023
Q2 		$4.97M Buy
1,504,639
+1,295,180
+618% +$3.81M ﹤0.01% 3667
2023
Q1 		$597K Sell
209,459
-606,785
-74% -$5.44M ﹤0.01% 7952
2022
Q4 		$5.94M Buy
816,244
+174,112
+27% +$1.14M ﹤0.01% 3581
2022
Q3 		$5.2M Buy
642,132
+586,085
+1,046% +$4.2M ﹤0.01% 3798
2022
Q2 		$275K Sell
56,047
-56,156
-50% -$549K ﹤0.01% 9984
2022
Q1 		$2.65M Sell
112,203
-58,758
-34% -$832K ﹤0.01% 5453
2021
Q4 		$3.02M Sell
170,961
-142,949
-46% -$2.83M ﹤0.01% 5318
2021
Q3 		$8.86M Sell
313,910
-96,615
-24% -$1.83M ﹤0.01% 3277
2021
Q2 		$4.3M Buy
+410,525
New +$4.15M ﹤0.01% 4767

Other funds holding FULC

SCM
Suvretta Capital Management New York $3.92B AUM 86.67% 1-Year Est. Return
RCM
RA Capital Management Boston, Massachusetts $9.44B AUM 157.3% 1-Year Est. Return
BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
TCM
TCG Crossover Management Palo Alto, California $3.5B AUM 1,165.83% 1-Year Est. Return
B
Braidwell Stamford, Connecticut $3B AUM 46.72% 1-Year Est. Return
NCM
Nantahala Capital Management New Canaan, Connecticut $2.72B AUM 121.58% 1-Year Est. Return
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
SL
Siren LLC Greenwich, Connecticut $4.94B AUM 244.43% 1-Year Est. Return
FTM
First Turn Management Del Mar, California $895M AUM 261.28% 1-Year Est. Return
Aberdeen Group
Aberdeen Group Edinburgh, United Kingdom $71.2B AUM 41.74% 1-Year Est. Return

Ken Griffin's FULC Position: Q1 2026 in Review

Ken Griffin increased its Fulcrum Therapeutics (FULC) stake by 7.1% in Q1 2026, buying an estimated $793K and bringing the position to 1,292,486 shares worth $9.91M. The position accounts for ﹤0.01% of the portfolio, ranked #3271.

Ken Griffin first reported a position in FULC in Q2 2021 and has held it in 20 quarters since. The position peaked at $13.7M in Q4 2025. 169 funds tracked by Wall St. Rank hold FULC as of Q1 2026.

  • Ken Griffin held 1,292,486 shares of Fulcrum Therapeutics worth $9.91M as of Q1 2026.
  • Ken Griffin bought 85,482 Fulcrum Therapeutics shares in Q1 2026, an estimated $793K.
  • Fulcrum Therapeutics made up ﹤0.01% of Ken Griffin's portfolio in Q1 2026, its #3271 holding.
  • Ken Griffin first reported a position in Fulcrum Therapeutics in Q2 2021 and has held it in 20 quarters since.
  • Ken Griffin's Fulcrum Therapeutics position peaked at $13.7M in Q4 2025.
  • 169 funds tracked by Wall St. Rank held Fulcrum Therapeutics as of Q1 2026.

Based on Citadel Advisors's 13F filing for Q1 2026, filed 15 May 2026.