Barclays
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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
-11,900
Closed -$127K – 6109
2020
Q1 		$127K Sell
11,900
-600
-5% -$7.27K ﹤0.01% 4627
2019
Q4 		$198K Buy
12,500
+12,000
+2,400% +$129K ﹤0.01% 5033
2019
Q3 		$4K Buy
+500
New +$4.44K ﹤0.01% 6487
2019
Q2 		– Sell
-27,300
Closed -$331K – 7191
2019
Q1 		$331K Sell
27,300
-28,600
-51% -$357K ﹤0.01% 4444
2018
Q4 		$576K Buy
55,900
+6,700
+14% +$79.6K ﹤0.01% 3684
2018
Q3 		$644K Buy
49,200
+43,300
+734% +$625K ﹤0.01% 4060
2018
Q2 		$86K Sell
5,900
-31,100
-84% -$614K ﹤0.01% 5341
2018
Q1 		$1.36M Buy
37,000
+23,000
+164% +$837K ﹤0.01% 2861
2017
Q4 		$525K Buy
14,000
+13,000
+1,300% +$662K ﹤0.01% 3776
2017
Q3 		$65K Buy
+1,000
New +$61.3K ﹤0.01% 5201
2015
Q2 		– Sell
-12,500
Closed -$475K – 7160
2015
Q1 		$475K Sell
12,500
-46
-0.4% -$1.18K ﹤0.01% 3657
2014
Q4 		$251K Buy
12,546
+1,400
+13% +$29.2K ﹤0.01% 4448
2014
Q3 		$245K Buy
11,146
+1,100
+11% +$23.3K ﹤0.01% 4550
2014
Q2 		$221K Buy
10,046
+10,000
+21,739% +$250K ﹤0.01% 4722
2014
Q1 		$2K Sell
46
-44
-49% -$1.42K ﹤0.01% 7407
2013
Q4 		$2K Buy
+90
New +$2.26K ﹤0.01% 7370
2013
Q3 		– Sell
-90
Closed -$1K – 7565
2013
Q2 		$1K Buy
+90
New +$837 ﹤0.01% 7601

Other funds holding PRTA

Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $551B AUM 33.95% 1-Year Est. Return
Penbrook Management
Penbrook Management New York $169M AUM 32.52% 1-Year Est. Return
Mackenzie Financial
Mackenzie Financial Toronto Ontario, Ontario, Canada $91.6B AUM 30% 1-Year Est. Return
Focused Wealth Management
Focused Wealth Management Newburgh, New York $1.17B AUM 16.89% 1-Year Est. Return
Creative Planning
Creative Planning Overland Park, Kansas $179B AUM 16.96% 1-Year Est. Return
Bank of New York Mellon
Bank of New York Mellon New York $608B AUM 32.77% 1-Year Est. Return
DA
DCF Advisers Greenwich, Connecticut $444M AUM 151.5% 1-Year Est. Return
Hennion & Walsh Asset Management
Hennion & Walsh Asset Management Parsippany, New Jersey $3.42B AUM 25.82% 1-Year Est. Return
Pinnacle Associates
Pinnacle Associates New York $8.92B AUM 43.91% 1-Year Est. Return
Achmea Investment Management
Achmea Investment Management Zeist, Netherlands $12.6B AUM 25.68% 1-Year Est. Return

Barclays's PRTA Position: Q3 2026 in Review

Barclays increased its Prothena Corp (PRTA) stake by 70% in Q3 2026, buying an estimated $236K and bringing the position to 63,989 shares worth $536K. The position accounts for ﹤0.01% of the portfolio, ranked #3421.

Barclays first reported a position in PRTA in Q2 2013 and has held it in 53 quarters since. The position peaked at $5.18M in Q4 2023. 55 funds tracked by Wall St. Rank hold PRTA as of Q3 2026.

  • Barclays held 63,989 shares of Prothena Corp worth $536K as of Q3 2026.
  • Barclays bought 26,366 Prothena Corp shares in Q3 2026, an estimated $236K.
  • Prothena Corp made up ﹤0.01% of Barclays's portfolio in Q3 2026, its #3421 holding.
  • Barclays first reported a position in Prothena Corp in Q2 2013 and has held it in 53 quarters since.
  • Barclays's Prothena Corp position peaked at $5.18M in Q4 2023.
  • 55 funds tracked by Wall St. Rank held Prothena Corp as of Q3 2026.

Based on Barclays's 13F filing for Q3 2026, filed 6 Nov 2026.