XT
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XTX Topco’s Assembly Biosciences ASMB Stock Holding History

XTX Topco’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
2026
Q2 		$1.18M Buy
42,918
+32,133
+298% +$875K 0.02% 1641
2026
Q1 		$299K Buy
+10,785
New +$308K 0.01% 2483
2025
Q4 		– Sell
-12,806
Closed -$328K – 3307
2025
Q3 		$328K Buy
+12,806
New +$281K 0.02% 1441
2024
Q1 		– Sell
-3,454
Closed -$34K – 1823
2023
Q4 		$34K Buy
3,454
+1,351
+64% +$12.8K 0.01% 1293
2023
Q3 		$22.3K Buy
+2,103
New +$25.3K ﹤0.01% 1362
2022
Q3 		– Sell
-1,101
Closed -$28K – 1095
2022
Q2 		$28K Buy
+1,101
New +$25.3K 0.01% 795
2022
Q1 		– Sell
-2,035
Closed -$57K – 668
2021
Q4 		$57K Buy
+2,035
New +$66.7K 0.03% 551
2021
Q2 		– Sell
-954
Closed -$53K – 800
2021
Q1 		$53K Buy
+954
New +$63.2K 0.03% 618

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 $21.7B AUM 79.24% 1-Year Est. Return
PBA
Paradigm Biocapital Advisors New York $5.34B AUM 380.18% 1-Year Est. Return
CC
Commodore Capital New York $1.68B AUM 375.52% 1-Year Est. Return
RCM
RA Capital Management Boston, Massachusetts $11.5B AUM 168.77% 1-Year Est. Return
JT
Jupiter Topco New York $245B AUM
BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
PHP
Parkman Healthcare Partners Stamford, Connecticut $977M AUM 110.37% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
Point72 Asset Management
Point72 Asset Management Stamford, Connecticut $90.7B AUM 77.13% 1-Year Est. Return

XTX Topco's ASMB Position: Q2 2026 in Review

XTX Topco increased its Assembly Biosciences (ASMB) stake by 298% in Q2 2026, buying an estimated $875K and bringing the position to 42,918 shares worth $1.18M. The position accounts for 0.02% of the portfolio, ranked #1641.

XTX Topco first reported a position in ASMB in Q1 2021 and has held it in 8 quarters since. 93 funds tracked by Wall St. Rank hold ASMB as of Q2 2026.

  • XTX Topco held 42,918 shares of Assembly Biosciences worth $1.18M as of Q2 2026.
  • XTX Topco bought 32,133 Assembly Biosciences shares in Q2 2026, an estimated $875K.
  • Assembly Biosciences made up 0.02% of XTX Topco's portfolio in Q2 2026, its #1641 holding.
  • XTX Topco first reported a position in Assembly Biosciences in Q1 2021 and has held it in 8 quarters since.
  • 93 funds tracked by Wall St. Rank held Assembly Biosciences as of Q2 2026.

Based on XTX Topco's 13F filing for Q2 2026, filed 14 Aug 2026.