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MassMutual Private Wealth & Trust’s Prothena Corp PRTA Stock Holding History

MassMutual Private Wealth & Trust’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
Q2 		– Sell
-112
Closed -$1.39K – 2468
2025
Q1 		$1.39K Buy
112
+92
+460% +$1.3K ﹤0.01% 2032
2024
Q4 		$277 Buy
20
+14
+233% +$221 ﹤0.01% 2226
2024
Q3 		$100 Sell
6
-21
-78% -$452 ﹤0.01% 2124
2024
Q2 		$557 Buy
+27
New +$584 ﹤0.01% 1941
2024
Q1 		– Sell
-62
Closed -$2.25K – 2113
2023
Q4 		$2.25K Buy
+62
New +$2.39K ﹤0.01% 1464
2017
Q2 		– Sell
-24
Closed -$1.34K – 1082
2017
Q1 		$1.34K Buy
+24
New +$1.26K ﹤0.01% 908

Other funds holding PRTA

Fidelity Investments
Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return
BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
ACM
ADAR1 Capital Management Austin, Texas $1.7B AUM 340.85% 1-Year Est. Return
AC
Armistice Capital New York $5.62B AUM 36.06% 1-Year Est. Return
Vanguard Group
Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 1-Year Est. Return
PAI
Palo Alto Investors Palo Alto, California $654M AUM 77.8% 1-Year Est. Return
Federated Hermes
Federated Hermes Pittsburgh, Pennsylvania $61.5B AUM 30.7% 1-Year Est. Return
Citadel Advisors
Citadel Advisors Miami, Florida $618B AUM 30.34% 1-Year Est. Return
Acadian Asset Management
Acadian Asset Management Boston, Massachusetts $70.5B AUM 36% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return

MassMutual Private Wealth & Trust's PRTA Position: Q2 2025 in Review

MassMutual Private Wealth & Trust sold out of Prothena Corp (PRTA) in Q2 2025, closing a stake of 112 shares — an estimated $1.39K sold.

MassMutual Private Wealth & Trust first reported a position in PRTA in Q1 2017 and held it in 6 quarters. The position peaked at $2.25K in Q4 2023. 188 funds tracked by Wall St. Rank hold PRTA as of Q2 2025.

  • MassMutual Private Wealth & Trust reported no remaining Prothena Corp position as of Q2 2025 after selling out during the quarter.
  • MassMutual Private Wealth & Trust sold 112 Prothena Corp shares in Q2 2025, an estimated $1.39K.
  • MassMutual Private Wealth & Trust first reported a position in Prothena Corp in Q1 2017 and held it in 6 quarters.
  • MassMutual Private Wealth & Trust's Prothena Corp position peaked at $2.25K in Q4 2023.
  • 188 funds tracked by Wall St. Rank held Prothena Corp as of Q2 2025.

Based on MassMutual Private Wealth & Trust's 13F filing for Q2 2025, filed 9 Jul 2025.