Ken Griffin
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Ken Griffin’s Assembly Biosciences ASMB Stock Holding History

Ken Griffin’s Portfolio ASMB Stock Details ASMB Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2024
Q1 		– Sell
-517
Closed -$5.08K – 14514
2023
Q4 		$5.08K Buy
+517
New +$4.92K ﹤0.01% 13458
2022
Q1 		– Sell
-1,525
Closed -$43K – 13531
2021
Q4 		$43K Buy
1,525
+58
+4% +$1.9K ﹤0.01% 13321
2021
Q3 		$61K Sell
1,467
-1,933
-57% -$81K ﹤0.01% 13251
2021
Q2 		$158K Buy
3,400
+958
+39% +$47.5K ﹤0.01% 12438
2021
Q1 		$135K Buy
2,442
+692
+40% +$45.9K ﹤0.01% 12164
2020
Q4 		$127K Buy
+1,750
New +$205K ﹤0.01% 10055
2020
Q2 		– Sell
-1,367
Closed -$243K – 9737
2020
Q1 		$243K Buy
1,367
+417
+44% +$89.4K ﹤0.01% 7680
2019
Q4 		$233K Buy
950
+83
+10% +$15.3K ﹤0.01% 7967
2019
Q3 		$102K Buy
+867
New +$131K ﹤0.01% 8471
2018
Q4 		– Sell
-825
Closed -$368K – 9065
2018
Q3 		$368K Buy
825
+333
+68% +$156K ﹤0.01% 7229
2018
Q2 		$231K Sell
492
-208
-30% -$110K ﹤0.01% 7637
2018
Q1 		$413K Buy
700
+75
+12% +$46.5K ﹤0.01% 6228
2017
Q4 		$339K Buy
+625
New +$283K ﹤0.01% 6250
2014
Q3 		– Sell
-57
Closed -$4K – 8092
2014
Q2 		$4K Sell
57
-1
-2% -$71 ﹤0.01% 7753
2014
Q1 		$4K Buy
+58
New +$9.03K ﹤0.01% 7675

Other funds holding ASMB

GS
Gilead Sciences Foster City, California $1.65B AUM 166.99% 1-Year Est. Return
FCM
Farallon Capital Management San Francisco, California $17.5B AUM 50.95% 1-Year Est. Return
RCM
RA Capital Management Boston, Massachusetts $9.44B AUM 157.3% 1-Year Est. Return
CC
Commodore Capital New York $1.73B AUM 298.96% 1-Year Est. Return
Janus Henderson Group
Janus Henderson Group London, United Kingdom $209B AUM 37.72% 1-Year Est. Return
PBA
Paradigm Biocapital Advisors New York $4.89B AUM 251.12% 1-Year Est. Return
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
PHP
Parkman Healthcare Partners Stamford, Connecticut $970M AUM 79.46% 1-Year Est. Return
Point72 Asset Management
Point72 Asset Management Stamford, Connecticut $78.1B AUM 55.25% 1-Year Est. Return
Blackstone Inc
Blackstone Inc New York $25.6B AUM 26.83% 1-Year Est. Return

Ken Griffin's ASMB Position: Q1 2026 in Review

Ken Griffin reduced its Assembly Biosciences (ASMB) stake by 23% in Q1 2026, selling an estimated $212K and leaving 25,437 shares worth $706K. The position accounts for ﹤0.01% of the portfolio, ranked #8475.

Ken Griffin first reported a position in ASMB in Q1 2014 and has held it in 32 quarters since. The position peaked at $27.1M in Q2 2020. 75 funds tracked by Wall St. Rank hold ASMB as of Q1 2026.

  • Ken Griffin held 25,437 shares of Assembly Biosciences worth $706K as of Q1 2026.
  • Ken Griffin sold 7,429 Assembly Biosciences shares in Q1 2026, an estimated $212K.
  • Assembly Biosciences made up ﹤0.01% of Ken Griffin's portfolio in Q1 2026, its #8475 holding.
  • Ken Griffin first reported a position in Assembly Biosciences in Q1 2014 and has held it in 32 quarters since.
  • Ken Griffin's Assembly Biosciences position peaked at $27.1M in Q2 2020.
  • 75 funds tracked by Wall St. Rank held Assembly Biosciences as of Q1 2026.

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