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ALPS Advisors’s Prothena Corp PRTA Stock Holding History

ALPS Advisors’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
2025
Q4 		– Sell
-25,727
Closed -$251K – 1069
2025
Q3 		$251K Sell
25,727
-3,301
-11% -$25.4K ﹤0.01% 1002
2025
Q2 		$176K Sell
29,028
-8,928
-24% -$67K ﹤0.01% 1011
2025
Q1 		$470K Sell
37,956
-5,554
-13% -$78.5K ﹤0.01% 602
2024
Q4 		$603K Buy
43,510
+1,883
+5% +$29.7K ﹤0.01% 574
2024
Q3 		$696K Sell
41,627
-308
-0.7% -$6.62K ﹤0.01% 567
2024
Q2 		$866K Buy
41,935
+4,046
+11% +$87.5K 0.01% 499
2024
Q1 		$939K Buy
37,889
+1,359
+4% +$40.4K 0.01% 503
2023
Q4 		$1.33M Sell
36,530
-2,994
-8% -$115K 0.01% 403
2023
Q3 		$1.91M Buy
39,524
+748
+2% +$44.4K 0.02% 331
2023
Q2 		$2.65M Buy
38,776
+4,142
+12% +$267K 0.02% 263
2023
Q1 		$1.68M Buy
34,634
+1,858
+6% +$98.2K 0.01% 323
2022
Q4 		$1.97M Buy
32,776
+7,186
+28% +$421K 0.02% 300
2022
Q3 		$1.55M Sell
25,590
-2,180
-8% -$68.9K 0.01% 356
2022
Q2 		$754K Sell
27,770
-20,212
-42% -$591K 0.01% 515
2022
Q1 		$1.75M Sell
47,982
-5,936
-11% -$214K 0.02% 243
2021
Q4 		$2.66M Sell
53,918
-1,288
-2% -$71.4K 0.03% 219
2021
Q3 		$3.93M Sell
55,206
-2,674
-5% -$166K 0.04% 189
2021
Q2 		$2.98M Sell
57,880
-14,337
-20% -$447K 0.03% 216
2021
Q1 		$1.81M Buy
72,217
+79
+0.1% +$1.49K 0.02% 327
2020
Q4 		$866K Buy
+72,138
New +$853K 0.01% 403

Other funds holding PRTA

Fidelity Investments
Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return
BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
RCMNY
Rubric Capital Management (New York) New York $10.9B AUM 70.31% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.38T AUM 44.17% 1-Year Est. Return
Vanguard Group
Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 1-Year Est. Return
D.E. Shaw & Co
D.E. Shaw & Co New York $210B AUM 57.28% 1-Year Est. Return
AC
Armistice Capital New York $8.17B AUM 68.82% 1-Year Est. Return
ACM
ADAR1 Capital Management Austin, Texas $2.19B AUM 374.99% 1-Year Est. Return
Acadian Asset Management
Acadian Asset Management Boston, Massachusetts $84.2B AUM 55.88% 1-Year Est. Return
PAI
Palo Alto Investors Palo Alto, California $724M AUM 96.91% 1-Year Est. Return

ALPS Advisors's PRTA Position: Q4 2025 in Review

ALPS Advisors sold out of Prothena Corp (PRTA) in Q4 2025, closing a stake of 25,727 shares — an estimated $251K sold.

ALPS Advisors first reported a position in PRTA in Q4 2020 and held it in 20 quarters. The position peaked at $3.93M in Q3 2021. 181 funds tracked by Wall St. Rank hold PRTA as of Q4 2025.

  • ALPS Advisors reported no remaining Prothena Corp position as of Q4 2025 after selling out during the quarter.
  • ALPS Advisors sold 25,727 Prothena Corp shares in Q4 2025, an estimated $251K.
  • ALPS Advisors first reported a position in Prothena Corp in Q4 2020 and held it in 20 quarters.
  • ALPS Advisors's Prothena Corp position peaked at $3.93M in Q3 2021.
  • 181 funds tracked by Wall St. Rank held Prothena Corp as of Q4 2025.

Based on ALPS Advisors's 13F filing for Q4 2025, filed 12 Feb 2026.