ProShare Advisors
PRTA icon

ProShare Advisors’s Prothena Corp PRTA Stock Holding History

ProShare 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
2026
Q1 		– Sell
-10,425
Closed -$99.6K – 1992
2025
Q4 		$99.6K Buy
+10,425
New +$106K ﹤0.01% 1877
2025
Q2 		– Sell
-11,632
Closed -$144K – 2163
2025
Q1 		$144K Sell
11,632
-2,892
-20% -$40.9K ﹤0.01% 1765
2024
Q4 		$201K Buy
14,524
+3,312
+30% +$52.2K ﹤0.01% 1884
2024
Q3 		$188K Buy
+11,212
New +$241K ﹤0.01% 1748
2024
Q2 		– Sell
-11,346
Closed -$281K – 1967
2024
Q1 		$281K Buy
11,346
+932
+9% +$27.7K ﹤0.01% 1462
2023
Q4 		$378K Buy
10,414
+1,526
+17% +$58.7K ﹤0.01% 1225
2023
Q3 		$429K Buy
8,888
+82
+0.9% +$4.87K ﹤0.01% 985
2023
Q2 		$601K Buy
8,806
+556
+7% +$35.9K ﹤0.01% 873
2023
Q1 		$400K Sell
8,250
-469
-5% -$24.8K ﹤0.01% 1020
2022
Q4 		$525K Buy
8,719
+861
+11% +$50.4K ﹤0.01% 942
2022
Q3 		$476K Buy
7,858
+228
+3% +$7.21K ﹤0.01% 917
2022
Q2 		$207K Sell
7,630
-3,979
-34% -$116K ﹤0.01% 1453
2022
Q1 		$424K Sell
11,609
-2,847
-20% -$103K ﹤0.01% 1393
2021
Q4 		$715K Buy
14,456
+355
+3% +$19.7K ﹤0.01% 1223
2021
Q3 		$1M Sell
14,101
-2,684
-16% -$167K ﹤0.01% 908
2021
Q2 		$863K Buy
16,785
+3,030
+22% +$94.5K ﹤0.01% 1120
2021
Q1 		$346K Buy
13,755
+781
+6% +$14.7K ﹤0.01% 1709
2020
Q4 		$156K Buy
12,974
+2,771
+27% +$32.8K ﹤0.01% 1910
2020
Q3 		$102K Sell
10,203
-355
-3% -$4.27K ﹤0.01% 1523
2020
Q2 		$110K Buy
+10,558
New +$117K ﹤0.01% 1561
2020
Q1 		– Sell
-14,077
Closed -$223K – 1487
2019
Q4 		$223K Sell
14,077
-1,300
-8% -$13.9K ﹤0.01% 1522
2019
Q3 		$121K Sell
15,377
-509
-3% -$4.52K ﹤0.01% 1528
2019
Q2 		$168K Sell
15,886
-2,023
-11% -$20.8K ﹤0.01% 1473
2019
Q1 		$217K Buy
17,909
+163
+0.9% +$2.04K ﹤0.01% 1428
2018
Q4 		$183K Sell
17,746
-3,418
-16% -$40.6K ﹤0.01% 1391
2018
Q3 		$277K Sell
21,164
-865
-4% -$12.5K ﹤0.01% 1406
2018
Q2 		$321K Sell
22,029
-755
-3% -$14.9K ﹤0.01% 1344
2018
Q1 		$836K Sell
22,784
-3,631
-14% -$132K 0.01% 900
2017
Q4 		$990K Buy
26,415
+2,218
+9% +$113K 0.01% 841
2017
Q3 		$1.57M Buy
24,197
+1,287
+6% +$78.8K 0.01% 621
2017
Q2 		$1.24M Buy
22,910
+216
+1% +$11.5K 0.01% 666
2017
Q1 		$1.27M Sell
22,694
-5,670
-20% -$298K 0.01% 675
2016
Q4 		$1.4M Buy
28,364
+2,803
+11% +$155K 0.02% 649
2016
Q3 		$1.53M Sell
25,561
-4,255
-14% -$228K 0.02% 564
2016
Q2 		$1.04M Buy
29,816
+266
+0.9% +$11.6K 0.01% 704
2016
Q1 		$1.22M Sell
29,550
-356
-1% -$13.9K 0.02% 633
2015
Q4 		$2.04M Buy
29,906
+2,990
+11% +$180K 0.02% 502
2015
Q3 		$1.22M Sell
26,916
-2,031
-7% -$118K 0.02% 612
2015
Q2 		$1.52M Buy
28,947
+1,733
+6% +$68.4K 0.02% 601
2015
Q1 		$1.04M Buy
27,214
+3,436
+14% +$88.1K 0.01% 827
2014
Q4 		$494K Sell
23,778
-829
-3% -$17.3K 0.01% 1201
2014
Q3 		$545K Buy
24,607
+729
+3% +$15.5K 0.01% 1349
2014
Q2 		$538K Sell
23,878
-7,255
-23% -$181K 0.01% 1545
2014
Q1 		$1.19M Buy
31,133
+20,452
+191% +$659K 0.01% 1148
2013
Q4 		$283K Buy
+10,681
New +$268K ﹤0.01% 1179

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
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
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
Morgan Stanley
Morgan Stanley New York $1.89T AUM 35.08% 1-Year Est. Return
PAI
Palo Alto Investors Palo Alto, California $724M AUM 96.91% 1-Year Est. Return

ProShare Advisors's PRTA Position: Q1 2026 in Review

ProShare Advisors sold out of Prothena Corp (PRTA) in Q1 2026, closing a stake of 10,425 shares — an estimated $99.6K sold.

ProShare Advisors first reported a position in PRTA in Q4 2013 and held it in 45 quarters. The position peaked at $2.04M in Q4 2015. 185 funds tracked by Wall St. Rank hold PRTA as of Q1 2026.

  • ProShare Advisors reported no remaining Prothena Corp position as of Q1 2026 after selling out during the quarter.
  • ProShare Advisors sold 10,425 Prothena Corp shares in Q1 2026, an estimated $99.6K.
  • ProShare Advisors first reported a position in Prothena Corp in Q4 2013 and held it in 45 quarters.
  • ProShare Advisors's Prothena Corp position peaked at $2.04M in Q4 2015.
  • 185 funds tracked by Wall St. Rank held Prothena Corp as of Q1 2026.

Based on ProShare Advisors's 13F filing for Q1 2026, filed 27 Apr 2026.