Primecap Management
PRTA icon

Primecap Management’s Prothena Corp PRTA Stock Holding History

Primecap 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
2024
Q4 		– Sell
-35,500
Closed -$594K – 339
2024
Q3 		$594K Sell
35,500
-1,000
-3% -$21.5K ﹤0.01% 326
2024
Q2 		$753K Hold
36,500
– – ﹤0.01% 323
2024
Q1 		$904K Buy
+36,500
New +$1.09M ﹤0.01% 323

Other funds holding PRTA

EC
EcoR1 Capital San Francisco, California $2.06B AUM 215.32% 1-Year Est. Return
Fidelity Investments
Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return
Wellington Management Group
Wellington Management Group Boston, Massachusetts $580B AUM 38.23% 1-Year Est. Return
BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
T. Rowe Price Associates
T. Rowe Price Associates Baltimore, Maryland $999B AUM 46.22% 1-Year Est. Return
AC
Armistice Capital New York $8.17B AUM 68.82% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
PAI
Palo Alto Investors Palo Alto, California $724M AUM 96.91% 1-Year Est. Return
Vanguard Group
Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 1-Year Est. Return
SL
Siren LLC Greenwich, Connecticut $4.94B AUM 244.43% 1-Year Est. Return

Primecap Management's PRTA Position: Q4 2024 in Review

Primecap Management sold out of Prothena Corp (PRTA) in Q4 2024, closing a stake of 35,500 shares — an estimated $594K sold.

Primecap Management first reported a position in PRTA in Q1 2024 and held it in 3 quarters. The position peaked at $904K in Q1 2024. 170 funds tracked by Wall St. Rank hold PRTA as of Q4 2024.

  • Primecap Management reported no remaining Prothena Corp position as of Q4 2024 after selling out during the quarter.
  • Primecap Management sold 35,500 Prothena Corp shares in Q4 2024, an estimated $594K.
  • Primecap Management first reported a position in Prothena Corp in Q1 2024 and held it in 3 quarters.
  • Primecap Management's Prothena Corp position peaked at $904K in Q1 2024.
  • 170 funds tracked by Wall St. Rank held Prothena Corp as of Q4 2024.

Based on Primecap Management's 13F filing for Q4 2024, filed 10 Feb 2025.