Barclays
PRTA icon

Barclays’s Prothena Corp PRTA Stock Holding History

Barclays’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
2020
Q2 		– Sell
-89,400
Closed -$956K – 6108
2020
Q1 		$956K Sell
89,400
-600
-0.7% -$7.27K ﹤0.01% 3002
2019
Q4 		$1.42M Buy
90,000
+88,900
+8,082% +$953K ﹤0.01% 3337
2019
Q3 		$9K Sell
1,100
-5,600
-84% -$49.7K ﹤0.01% 6374
2019
Q2 		$71K Buy
6,700
+3,100
+86% +$31.8K ﹤0.01% 5918
2019
Q1 		$44K Sell
3,600
-15,600
-81% -$195K ﹤0.01% 5970
2018
Q4 		$198K Sell
19,200
-6,200
-24% -$73.7K ﹤0.01% 4581
2018
Q3 		$332K Buy
25,400
+10,700
+73% +$155K ﹤0.01% 4602
2018
Q2 		$214K Sell
14,700
-408,700
-97% -$8.07M ﹤0.01% 4663
2018
Q1 		$15.5M Buy
423,400
+403,500
+2,028% +$14.7M 0.01% 972
2017
Q4 		$746K Buy
+19,900
New +$1.01M ﹤0.01% 3412
2017
Q1 		– Sell
-1,200
Closed -$59K – 6927
2016
Q4 		$59K Buy
+1,200
New +$66.2K ﹤0.01% 5061
2015
Q1 		– Sell
-90
Closed -$2K – 7216
2014
Q4 		$2K Hold
90
– – ﹤0.01% 7120
2014
Q3 		$2K Hold
90
– – ﹤0.01% 7413
2014
Q2 		$2K Hold
90
– – ﹤0.01% 7405
2014
Q1 		$3K Sell
90
-218
-71% -$7.03K ﹤0.01% 7337
2013
Q4 		$8K Buy
+308
New +$7.72K ﹤0.01% 7063
2013
Q3 		– Sell
-322
Closed -$4K – 7563
2013
Q2 		$4K Buy
+322
New +$3K ﹤0.01% 7410

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

Barclays's PRTA Position: Q2 2026 in Review

Barclays reduced its Prothena Corp (PRTA) stake by 7.9% in Q2 2026, selling an estimated $32K and leaving 37,623 shares worth $368K. The position accounts for ﹤0.01% of the portfolio, ranked #3377.

Barclays first reported a position in PRTA in Q2 2013 and has held it in 52 quarters since. The position peaked at $5.18M in Q4 2023. 187 funds tracked by Wall St. Rank hold PRTA as of Q2 2026.

  • Barclays held 37,623 shares of Prothena Corp worth $368K as of Q2 2026.
  • Barclays sold 3,239 Prothena Corp shares in Q2 2026, an estimated $32K.
  • Prothena Corp made up ﹤0.01% of Barclays's portfolio in Q2 2026, its #3377 holding.
  • Barclays first reported a position in Prothena Corp in Q2 2013 and has held it in 52 quarters since.
  • Barclays's Prothena Corp position peaked at $5.18M in Q4 2023.
  • 187 funds tracked by Wall St. Rank held Prothena Corp as of Q2 2026.

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