Osaic Holdings
PRTA icon

Osaic Holdings’s Prothena Corp PRTA Stock Holding History

Osaic Holdings’s Portfolio PRTA Stock Details PRTA Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q2 		$2.72K Sell
278
-94
-25% -$928 ﹤0.01% 7175
2026
Q1 		$3.61K Buy
372
+135
+57% +$1.24K ﹤0.01% 6831
2025
Q4 		$2.26K Sell
237
-6
-2% -$61 ﹤0.01% 7056
2025
Q3 		$2.3K Sell
243
-4
-2% -$31 ﹤0.01% 7099
2025
Q2 		$1.5K Buy
247
+86
+53% +$645 ﹤0.01% 7035
2025
Q1 		$1.99K Sell
161
-98
-38% -$1.39K ﹤0.01% 6600
2024
Q4 		$3.58K Sell
259
-588
-69% -$9.28K ﹤0.01% 6360
2024
Q3 		$14.2K Sell
847
-1,146
-58% -$24.6K ﹤0.01% 5590
2024
Q2 		$41.1K Sell
1,993
-83
-4% -$1.8K ﹤0.01% 4829
2024
Q1 		$51.4K Sell
2,076
-2,019
-49% -$60.1K ﹤0.01% 4735
2023
Q4 		$149K Sell
4,095
-345
-8% -$13.3K ﹤0.01% 4157
2023
Q3 		$214K Buy
4,440
+1,323
+42% +$78.6K ﹤0.01% 3943
2023
Q2 		$213K Buy
3,117
+2,297
+280% +$148K ﹤0.01% 3842
2023
Q1 		$39.7K Sell
820
-531
-39% -$28.1K ﹤0.01% 5111
2022
Q4 		$81.1K Buy
1,351
+126
+10% +$7.38K ﹤0.01% 4602
2022
Q3 		$73K Sell
1,225
-14
-1% -$443 ﹤0.01% 4616
2022
Q2 		$33K Buy
1,239
+923
+292% +$27K ﹤0.01% 5267
2022
Q1 		$134K Sell
316
-54
-15% -$1.95K ﹤0.01% 4354
2021
Q4 		$19K Sell
370
-1,068
-74% -$59.2K ﹤0.01% 5834
2021
Q3 		$101K Buy
1,438
+1,321
+1,129% +$82K ﹤0.01% 4518
2021
Q2 		$6K Sell
117
-39
-25% -$1.22K ﹤0.01% 6303
2021
Q1 		$3K Hold
156
– – ﹤0.01% 6391
2020
Q4 		$2K Sell
156
-52
-25% -$615 ﹤0.01% 6093
2020
Q3 		$2K Buy
208
+22
+12% +$265 ﹤0.01% 5886
2020
Q2 		$2K Sell
186
-31
-14% -$344 ﹤0.01% 5816
2020
Q1 		$2K Buy
+217
New +$2.63K ﹤0.01% 5713

Other funds holding PRTA

Fidelity Investments
Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return
RCMNY
Rubric Capital Management (New York) New York $10.9B AUM 70.31% 1-Year Est. Return
BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
Acadian Asset Management
Acadian Asset Management Boston, Massachusetts $84.2B AUM 55.88% 1-Year Est. Return
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM
D.E. Shaw & Co
D.E. Shaw & Co New York $210B AUM 57.28% 1-Year Est. Return
ACM
ADAR1 Capital Management Austin, Texas $2.19B AUM 374.99% 1-Year Est. Return
Two Sigma Investments
Two Sigma Investments New York $138B AUM 41.87% 1-Year Est. Return
PAI
Palo Alto Investors Palo Alto, California $724M AUM 96.91% 1-Year Est. Return

Osaic Holdings's PRTA Position: Q2 2026 in Review

Osaic Holdings reduced its Prothena Corp (PRTA) stake by 25% in Q2 2026, selling an estimated $928 and leaving 278 shares worth $2.72K. The position accounts for ﹤0.01% of the portfolio, ranked #7175.

Osaic Holdings first reported a position in PRTA in Q1 2020 and has held it in 26 quarters since. The position peaked at $214K in Q3 2023. 187 funds tracked by Wall St. Rank hold PRTA as of Q2 2026.

  • Osaic Holdings held 278 shares of Prothena Corp worth $2.72K as of Q2 2026.
  • Osaic Holdings sold 94 Prothena Corp shares in Q2 2026, an estimated $928.
  • Prothena Corp made up ﹤0.01% of Osaic Holdings's portfolio in Q2 2026, its #7175 holding.
  • Osaic Holdings first reported a position in Prothena Corp in Q1 2020 and has held it in 26 quarters since.
  • Osaic Holdings's Prothena Corp position peaked at $214K in Q3 2023.
  • 187 funds tracked by Wall St. Rank held Prothena Corp as of Q2 2026.

Based on Osaic Holdings's 13F filing for Q2 2026, filed 14 Aug 2026.