T. Rowe Price Associates’s Assembly Biosciences ASMB Stock Holding History

T. Rowe Price Associates’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	$226K	Buy	+8,203	New	+$223K	﹤0.01%	2966
2020 Q4	–	Sell	-51,520	Closed	-$10.2M	–	2667
2020 Q3	$10.2M	Sell	51,520 -5,241	-9%	-$1.32M	﹤0.01%	1298
2020 Q2	$15.9M	Sell	56,761 -4,665	-8%	-$1.09M	﹤0.01%	1200
2020 Q1	$10.9M	Sell	61,426 -12,548	-17%	-$2.69M	﹤0.01%	1217
2019 Q4	$18.2M	Buy	+73,974	New	+$13.6M	﹤0.01%	1214
2018 Q4	–	Sell	-18,525	Closed	-$8.26M	–	2562
2018 Q3	$8.26M	Buy	18,525 +1,034	+6%	+$484K	﹤0.01%	1404
2018 Q2	$8.23M	Buy	17,491 +2,535	+17%	+$1.34M	﹤0.01%	1377
2018 Q1	$8.82M	Buy	+14,956	New	+$9.27M	﹤0.01%	1360

Other funds holding ASMB

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

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

Jupiter Topco New York $245B AUM

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 Malvern, Pennsylvania $4.68T AUM

Point72 Asset Management Stamford, Connecticut $90.7B AUM 77.13% 1-Year Est. Return

T. Rowe Price Associates's ASMB Position: Q2 2026 in Review

T. Rowe Price Associates opened a new position in Assembly Biosciences (ASMB) in Q2 2026: 8,203 shares worth $226K. The stake represents ﹤0.01% of the portfolio and ranks #2966 among its holdings. This is a return to the name: T. Rowe Price Associates previously reported a position in ASMB as recently as Q3 2020.

T. Rowe Price Associates first reported a position in ASMB in Q1 2018 and has held it in 8 quarters since. The position peaked at $18.2M in Q4 2019. 93 funds tracked by Wall St. Rank hold ASMB as of Q2 2026.

T. Rowe Price Associates held 8,203 shares of Assembly Biosciences worth $226K as of Q2 2026.
Assembly Biosciences was a new T. Rowe Price Associates position in Q2 2026.
Assembly Biosciences made up ﹤0.01% of T. Rowe Price Associates's portfolio in Q2 2026, its #2966 holding.
T. Rowe Price Associates first reported a position in Assembly Biosciences in Q1 2018 and has held it in 8 quarters since.
T. Rowe Price Associates's Assembly Biosciences position peaked at $18.2M in Q4 2019.
93 funds tracked by Wall St. Rank held Assembly Biosciences as of Q2 2026.

Based on T. Rowe Price Associates's 13F filing for Q2 2026, filed 14 Aug 2026.