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Ontario Teachers' Pension Plan Board’s Arrowhead Research ARWR Stock Holding History

Ontario Teachers' Pension Plan Board’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
2025
Q3 		– Sell
-97,338
Closed -$1.54M – 189
2025
Q2 		$1.54M Buy
97,338
+51,569
+113% +$740K 0.03% 173
2025
Q1 		$583K Buy
+45,769
New +$832K 0.01% 340
2024
Q4 		– Sell
-16,690
Closed -$323K – 429
2024
Q3 		$323K Sell
16,690
-20,863
-56% -$509K ﹤0.01% 382
2024
Q2 		$976K Sell
37,553
-50,330
-57% -$1.24M 0.01% 327
2024
Q1 		$2.51M Buy
87,883
+81,321
+1,239% +$2.6M 0.02% 204
2023
Q4 		$201K Buy
+6,562
New +$174K ﹤0.01% 489
2023
Q1 		– Sell
-26,929
Closed -$1.09M – 506
2022
Q4 		$1.09M Buy
+26,929
New +$892K 0.01% 308
2022
Q3 		– Sell
-26,038
Closed -$917K – 494
2022
Q2 		$917K Sell
26,038
-9,563
-27% -$360K 0.01% 243
2022
Q1 		$1.64M Buy
35,601
+10,777
+43% +$534K 0.02% 111
2021
Q4 		$1.65M Buy
24,824
+7,155
+40% +$492K 0.02% 138
2021
Q3 		$1.1M Buy
17,669
+9,097
+106% +$589K ﹤0.01% 186
2021
Q2 		$710K Buy
+8,572
New +$638K 0.01% 228

Other funds holding ARWR

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Vanguard Group
Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 1-Year Est. Return
ACA
Avoro Capital Advisors New York $11.1B AUM 207.82% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.38T AUM 44.17% 1-Year Est. Return
Fidelity Investments
Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return
SPC
Slate Path Capital New York $7.22B AUM 110.75% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
SL
Siren LLC Greenwich, Connecticut $4.94B AUM 244.43% 1-Year Est. Return
DCM
Driehaus Capital Management Chicago, Illinois $17.3B AUM 211.34% 1-Year Est. Return
Arrowstreet Capital
Arrowstreet Capital Boston, Massachusetts $225B AUM 49.49% 1-Year Est. Return

Ontario Teachers' Pension Plan Board's ARWR Position: Q3 2025 in Review

Ontario Teachers' Pension Plan Board sold out of Arrowhead Research (ARWR) in Q3 2025, closing a stake of 97,338 shares — an estimated $1.54M sold.

Ontario Teachers' Pension Plan Board first reported a position in ARWR in Q2 2021 and held it in 12 quarters. The position peaked at $2.51M in Q1 2024. 304 funds tracked by Wall St. Rank hold ARWR as of Q3 2025.

  • Ontario Teachers' Pension Plan Board reported no remaining Arrowhead Research position as of Q3 2025 after selling out during the quarter.
  • Ontario Teachers' Pension Plan Board sold 97,338 Arrowhead Research shares in Q3 2025, an estimated $1.54M.
  • Ontario Teachers' Pension Plan Board first reported a position in Arrowhead Research in Q2 2021 and held it in 12 quarters.
  • Ontario Teachers' Pension Plan Board's Arrowhead Research position peaked at $2.51M in Q1 2024.
  • 304 funds tracked by Wall St. Rank held Arrowhead Research as of Q3 2025.

Based on Ontario Teachers' Pension Plan Board's 13F filing for Q3 2025, filed 7 Nov 2025.