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Manchester Capital Management’s Prothena Corp PRTA Stock Holding History

Manchester Capital Management’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
-250
Closed -$2.44K – 1455
2025
Q3 		$2.44K Hold
250
– – ﹤0.01% 1054
2025
Q2 		$1.52K Hold
250
– – ﹤0.01% 1028
2025
Q1 		$3.09K Hold
250
– – ﹤0.01% 956
2024
Q4 		$3.46K Hold
250
– – ﹤0.01% 934
2024
Q3 		$4.18K Hold
250
– – ﹤0.01% 915
2024
Q2 		$5.16K Buy
+250
New +$5.41K ﹤0.01% 844
2015
Q1 		– Sell
-9
Closed – – 783
2014
Q4 		$0 Buy
+9
New +$188 ﹤0.01% 1129

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 $3.37T AUM 44.26% 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

Manchester Capital Management's PRTA Position: Q4 2025 in Review

Manchester Capital Management sold out of Prothena Corp (PRTA) in Q4 2025, closing a stake of 250 shares — an estimated $2.44K sold.

Manchester Capital Management first reported a position in PRTA in Q4 2014 and held it in 7 quarters. The position peaked at $5.16K in Q2 2024. 181 funds tracked by Wall St. Rank hold PRTA as of Q4 2025.

  • Manchester Capital Management reported no remaining Prothena Corp position as of Q4 2025 after selling out during the quarter.
  • Manchester Capital Management sold 250 Prothena Corp shares in Q4 2025, an estimated $2.44K.
  • Manchester Capital Management first reported a position in Prothena Corp in Q4 2014 and held it in 7 quarters.
  • Manchester Capital Management's Prothena Corp position peaked at $5.16K in Q2 2024.
  • 181 funds tracked by Wall St. Rank held Prothena Corp as of Q4 2025.

Based on Manchester Capital Management's 13F filing for Q4 2025, filed 11 Feb 2026.