Wellington Management Group
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Wellington Management Group’s Assembly Biosciences ASMB Stock Holding History

Wellington Management Group’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
Q1 		$735K Buy
+26,496
New +$756K ﹤0.01% 1727
2021
Q3 		– Sell
-3,881
Closed -$180K – 2146
2021
Q2 		$180K Sell
3,881
-227
-6% -$11.2K ﹤0.01% 2098
2021
Q1 		$227K Sell
4,108
-2,746
-40% -$182K ﹤0.01% 2046
2020
Q4 		$497K Sell
6,854
-98,623
-94% -$11.6M ﹤0.01% 1715
2020
Q3 		$20.8M Sell
105,477
-11,175
-10% -$2.81M ﹤0.01% 947
2020
Q2 		$32.6M Sell
116,652
-3,325
-3% -$776K 0.01% 802
2020
Q1 		$21.4M Sell
119,977
-6,806
-5% -$1.46M 0.01% 860
2019
Q4 		$31.1M Sell
126,783
-37,412
-23% -$6.89M 0.01% 878
2019
Q3 		$19.4M Sell
164,195
-23,408
-12% -$3.54M ﹤0.01% 973
2019
Q2 		$30.4M Sell
187,603
-2,282
-1% -$434K 0.01% 909
2019
Q1 		$44.9M Sell
189,885
-3,153
-2% -$798K 0.01% 776
2018
Q4 		$52.4M Buy
193,038
+22,294
+13% +$6.45M 0.01% 694
2018
Q3 		$76.1M Buy
170,744
+170,136
+27,983% +$79.7M 0.02% 674
2018
Q2 		$286K Sell
608
-1,263
-68% -$668K ﹤0.01% 2144
2018
Q1 		$1.1M Buy
1,871
+1,408
+304% +$873K ﹤0.01% 1882
2017
Q4 		$251K Buy
+463
New +$210K ﹤0.01% 2156

Other funds holding ASMB

GS
Gilead Sciences Foster City, California $2.12B AUM 143.53% 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

Wellington Management Group's ASMB Position: Q1 2026 in Review

Wellington Management Group opened a new position in Assembly Biosciences (ASMB) in Q1 2026: 26,496 shares worth $735K. The stake represents ﹤0.01% of the portfolio and ranks #1727 among its holdings. This is a return to the name: Wellington Management Group previously reported a position in ASMB as recently as Q2 2021.

Wellington Management Group first reported a position in ASMB in Q4 2017 and has held it in 16 quarters since. The position peaked at $76.1M in Q3 2018. 75 funds tracked by Wall St. Rank hold ASMB as of Q1 2026.

  • Wellington Management Group held 26,496 shares of Assembly Biosciences worth $735K as of Q1 2026.
  • Assembly Biosciences was a new Wellington Management Group position in Q1 2026.
  • Assembly Biosciences made up ﹤0.01% of Wellington Management Group's portfolio in Q1 2026, its #1727 holding.
  • Wellington Management Group first reported a position in Assembly Biosciences in Q4 2017 and has held it in 16 quarters since.
  • Wellington Management Group's Assembly Biosciences position peaked at $76.1M in Q3 2018.
  • 75 funds tracked by Wall St. Rank held Assembly Biosciences as of Q1 2026.

Based on Wellington Management Group's 13F filing for Q1 2026, filed 15 May 2026.