William Blair & Company
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William Blair & Company’s Arrowhead Research ARWR Stock Holding History

William Blair & Company’s Portfolio ARWR Stock Details ARWR Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2023
Q4 		– Sell
-11,660
Closed -$313K – 1789
2023
Q3 		$313K Sell
11,660
-2,380
-17% -$72.9K ﹤0.01% 1213
2023
Q2 		$501K Sell
14,040
-450
-3% -$15.5K ﹤0.01% 1054
2023
Q1 		$368K Sell
14,490
-569
-4% -$17.9K ﹤0.01% 1152
2022
Q4 		$611K Sell
15,059
-1,870
-11% -$62K ﹤0.01% 985
2022
Q3 		$560K Sell
16,929
-3,005
-15% -$121K ﹤0.01% 1000
2022
Q2 		$702K Sell
19,934
-385
-2% -$14.5K ﹤0.01% 964
2022
Q1 		$934K Sell
20,319
-300
-1% -$14.9K ﹤0.01% 951
2021
Q4 		$1.37M Sell
20,619
-83
-0.4% -$5.7K ﹤0.01% 842
2021
Q3 		$1.29M Sell
20,702
-212
-1% -$13.7K ﹤0.01% 826
2021
Q2 		$1.73M Sell
20,914
-304
-1% -$22.6K 0.01% 742
2021
Q1 		$1.41M Sell
21,218
-922
-4% -$71.5K 0.01% 788
2020
Q4 		$1.7M Sell
22,140
-1,150
-5% -$73.5K 0.01% 699
2020
Q3 		$1M Buy
23,290
+750
+3% +$32.4K ﹤0.01% 759
2020
Q2 		$974K Sell
22,540
-1,050
-4% -$37.1K ﹤0.01% 728
2020
Q1 		$679K Sell
23,590
-23,423
-50% -$945K ﹤0.01% 785
2019
Q4 		$2.98M Buy
47,013
+8,493
+22% +$421K 0.02% 518
2019
Q3 		$1.08M Sell
38,520
-580
-1% -$17.2K 0.01% 725
2019
Q2 		$1.04M Sell
39,100
-350
-0.9% -$7.68K 0.01% 747
2019
Q1 		$724K Sell
39,450
-25,875
-40% -$427K ﹤0.01% 836
2018
Q4 		$811K Sell
65,325
-2,255
-3% -$30.8K 0.01% 752
2018
Q3 		$1.3M Buy
67,580
+4,410
+7% +$72.4K 0.01% 660
2018
Q2 		$859K Sell
63,170
-29,680
-32% -$277K 0.01% 778
2018
Q1 		$669K Buy
+92,850
New +$572K ﹤0.01% 827

Other funds holding ARWR

BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
Vanguard Group
Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return
Fidelity Investments
Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return
JP Morgan Chase
JP Morgan Chase New York $1.56T AUM 27.86% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return
Invesco
Invesco Atlanta, Georgia $1.02T AUM 30.18% 1-Year Est. Return
Morgan Stanley
Morgan Stanley New York $1.66T AUM 25.57% 1-Year Est. Return
CS
Credit Suisse Zurich, Switzerland $104B AUM 34.76% 1-Year Est. Return
SPC
Slate Path Capital New York $6.73B AUM 95.97% 1-Year Est. Return

William Blair & Company's ARWR Position: Q4 2023 in Review

William Blair & Company sold out of Arrowhead Research (ARWR) in Q4 2023, closing a stake of 11,660 shares — an estimated $313K sold.

William Blair & Company first reported a position in ARWR in Q1 2018 and held it in 23 quarters. The position peaked at $2.98M in Q4 2019. 266 funds tracked by Wall St. Rank hold ARWR as of Q4 2023.

  • William Blair & Company reported no remaining Arrowhead Research position as of Q4 2023 after selling out during the quarter.
  • William Blair & Company sold 11,660 Arrowhead Research shares in Q4 2023, an estimated $313K.
  • William Blair & Company first reported a position in Arrowhead Research in Q1 2018 and held it in 23 quarters.
  • William Blair & Company's Arrowhead Research position peaked at $2.98M in Q4 2019.
  • 266 funds tracked by Wall St. Rank held Arrowhead Research as of Q4 2023.

Based on William Blair & Company's 13F filing for Q4 2023, filed 12 Feb 2024.