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Rock Springs Capital Management’s Assembly Biosciences ASMB Stock Holding History

Rock Springs Capital Management’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
2020
Q4 		– Sell
-121,993
Closed -$24.1M – 157
2020
Q3 		$24.1M Sell
121,993
-2,917
-2% -$735K 0.61% 56
2020
Q2 		$35M Sell
124,910
-90
-0.1% -$21K 0.96% 42
2020
Q1 		$22.2M Hold
125,000
– – 0.92% 43
2019
Q4 		$30.7M Buy
125,000
+16,667
+15% +$3.07M 0.97% 36
2019
Q3 		$12.8M Buy
108,333
+61,666
+132% +$9.33M 0.51% 64
2019
Q2 		$7.55M Buy
46,667
+9,167
+24% +$1.74M 0.27% 89
2019
Q1 		$8.86M Hold
37,500
– – 0.34% 87
2018
Q4 		$10.2M Sell
37,500
-3,333
-8% -$964K 0.48% 66
2018
Q3 		$18.2M Buy
40,833
+3,333
+9% +$1.56M 0.66% 51
2018
Q2 		$17.6M Buy
37,500
+583
+2% +$308K 0.68% 49
2018
Q1 		$21.8M Sell
36,917
-583
-2% -$361K 0.93% 37
2017
Q4 		$20.4M Buy
37,500
+5,000
+15% +$2.26M 0.92% 34
2017
Q3 		$13.6M Hold
32,500
– – 0.63% 55
2017
Q2 		$8.05M Hold
32,500
– – 0.41% 72
2017
Q1 		$9.94M Hold
32,500
– – 0.57% 57
2016
Q4 		$4.74M Hold
32,500
– – 0.32% 80
2016
Q3 		$2.81M Hold
32,500
– – 0.18% 111
2016
Q2 		$2.17M Hold
32,500
– – 0.16% 114
2016
Q1 		$1.96M Buy
32,500
+1,583
+5% +$106K 0.16% 114
2015
Q4 		$2.79M Hold
30,917
– – 0.21% 104
2015
Q3 		$3.55M Buy
30,917
+4,792
+18% +$843K 0.29% 99
2015
Q2 		$6.04M Sell
26,125
-333
-1% -$64.3K 0.44% 78
2015
Q1 		$4.2M Buy
+26,458
New +$3.58M 0.39% 81

Other funds holding ASMB

BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
AC
Armistice Capital New York $5.62B AUM 36.06% 1-Year Est. Return
AIM
Alerce Investment Management Chicago, Illinois $56.8M AUM 31.17% 1-Year Est. Return
CCM
Consonance Capital Management New York $7.28M AUM 43.59% 1-Year Est. Return
Vanguard Group
Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 1-Year Est. Return
BBA
Baker Bros. Advisors New York $17.4B AUM 131.5% 1-Year Est. Return
BC
Boxer Capital San Diego, California $2.04B AUM 108.39% 1-Year Est. Return
CS
Candriam SCA Strassen, Luxembourg, Luxembourg $19.3B AUM 39.18% 1-Year Est. Return
Franklin Resources
Franklin Resources San Mateo, California $408B AUM 30.18% 1-Year Est. Return
PIM
Platinum Investment Management Sydney Australia 2000, Australia $397M AUM 63.96% 1-Year Est. Return

Rock Springs Capital Management's ASMB Position: Q4 2020 in Review

Rock Springs Capital Management sold out of Assembly Biosciences (ASMB) in Q4 2020, closing a stake of 121,993 shares — an estimated $24.1M sold.

Rock Springs Capital Management first reported a position in ASMB in Q1 2015 and held it in 23 quarters. The position peaked at $35M in Q2 2020. 109 funds tracked by Wall St. Rank hold ASMB as of Q4 2020.

  • Rock Springs Capital Management reported no remaining Assembly Biosciences position as of Q4 2020 after selling out during the quarter.
  • Rock Springs Capital Management sold 121,993 Assembly Biosciences shares in Q4 2020, an estimated $24.1M.
  • Rock Springs Capital Management first reported a position in Assembly Biosciences in Q1 2015 and held it in 23 quarters.
  • Rock Springs Capital Management's Assembly Biosciences position peaked at $35M in Q2 2020.
  • 109 funds tracked by Wall St. Rank held Assembly Biosciences as of Q4 2020.

Based on Rock Springs Capital Management's 13F filing for Q4 2020, filed 16 Feb 2021.