Jacobs Levy Equity Management
PRTA icon

Jacobs Levy Equity Management’s Prothena Corp PRTA Stock Holding History

Jacobs Levy Equity 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
2026
Q2 		$9.46M Sell
965,988
-6,029
-0.6% -$59.5K 0.03% 325
2026
Q1 		$9.45M Sell
972,017
-5,994
-0.6% -$54.9K 0.04% 314
2025
Q4 		$9.34M Buy
978,011
+101,483
+12% +$1.03M 0.04% 312
2025
Q3 		$8.55M Buy
876,528
+183,374
+26% +$1.41M 0.03% 329
2025
Q2 		$4.21M Buy
693,154
+674,601
+3,636% +$5.06M 0.02% 477
2025
Q1 		$230K Buy
+18,553
New +$262K ﹤0.01% 1013
2022
Q1 		– Sell
-177,294
Closed -$8.76M – 1071
2021
Q4 		$8.76M Buy
177,294
+134,067
+310% +$7.43M 0.06% 333
2021
Q3 		$3.08M Buy
+43,227
New +$2.68M 0.02% 533
2021
Q2 		– Sell
-313,851
Closed -$7.88M – 1099
2021
Q1 		$7.88M Sell
313,851
-1,940
-0.6% -$36.5K 0.06% 337
2020
Q4 		$3.79M Sell
315,791
-2,513
-0.8% -$29.7K 0.03% 448
2020
Q3 		$3.18M Sell
318,304
-14,615
-4% -$176K 0.03% 432
2020
Q2 		$3.48M Buy
332,919
+203
+0.1% +$2.26K 0.04% 418
2020
Q1 		$3.56M Buy
332,716
+18,391
+6% +$223K 0.05% 360
2019
Q4 		$4.98M Buy
314,325
+24,513
+8% +$263K 0.05% 376
2019
Q3 		$2.27M Buy
289,812
+46,521
+19% +$413K 0.03% 484
2019
Q2 		$2.57M Buy
243,291
+90,803
+60% +$933K 0.04% 482
2019
Q1 		$1.85M Buy
152,488
+104,313
+217% +$1.3M 0.03% 525
2018
Q4 		$496K Buy
+48,175
New +$573K 0.01% 732

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

Jacobs Levy Equity Management's PRTA Position: Q2 2026 in Review

Jacobs Levy Equity Management reduced its Prothena Corp (PRTA) stake by 0.62% in Q2 2026, selling an estimated $59.5K and leaving 965,988 shares worth $9.46M. The position accounts for 0.03% of the portfolio, ranked #325.

Jacobs Levy Equity Management first reported a position in PRTA in Q4 2018 and has held it in 18 quarters since. 188 funds tracked by Wall St. Rank hold PRTA as of Q2 2026.

  • Jacobs Levy Equity Management held 965,988 shares of Prothena Corp worth $9.46M as of Q2 2026.
  • Jacobs Levy Equity Management sold 6,029 Prothena Corp shares in Q2 2026, an estimated $59.5K.
  • Prothena Corp made up 0.03% of Jacobs Levy Equity Management's portfolio in Q2 2026, its #325 holding.
  • Jacobs Levy Equity Management first reported a position in Prothena Corp in Q4 2018 and has held it in 18 quarters since.
  • 188 funds tracked by Wall St. Rank held Prothena Corp as of Q2 2026.

Based on Jacobs Levy Equity Management's 13F filing for Q2 2026, filed 14 Aug 2026.