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OrbiMed’s Prothena Corp PRTA Stock Holding History

OrbiMed’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
2021
Q1 		– Sell
-1,797,458
Closed -$21.6M – 176
2020
Q4 		$21.6M Sell
1,797,458
-1,747,017
-49% -$20.7M 0.19% 98
2020
Q3 		$35.4M Hold
3,544,475
– – 0.45% 63
2020
Q2 		$37.1M Buy
3,544,475
+642,236
+22% +$7.14M 0.52% 56
2020
Q1 		$31.1M Hold
2,902,239
– – 0.52% 52
2019
Q4 		$45.9M Sell
2,902,239
-119,878
-4% -$1.29M 0.66% 49
2019
Q3 		$23.7M Sell
3,022,117
-43,161
-1% -$383K 0.45% 54
2019
Q2 		$32.4M Buy
3,065,278
+630,000
+26% +$6.47M 0.5% 50
2019
Q1 		$29.5M Buy
+2,435,278
New +$30.4M 0.46% 54
2014
Q2 		– Sell
-1,889,000
Closed -$72.4M – 144
2014
Q1 		$72.4M Buy
1,889,000
+687,000
+57% +$22.1M 0.89% 36
2013
Q4 		$31.9M Buy
+1,202,000
New +$30.1M 0.47% 46

Other funds holding PRTA

EC
EcoR1 Capital San Francisco, California $2.36B AUM 204.53% 1-Year Est. Return
BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
T. Rowe Price Associates
T. Rowe Price Associates Baltimore, Maryland $865B AUM 30.76% 1-Year Est. Return
Fidelity Investments
Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return
FLAM
First Light Asset Management Edina, Minnesota $1.12B AUM 114.45% 1-Year Est. Return
RG
Redmile Group San Francisco, California $1.51B AUM 164.17% 1-Year Est. Return
PAI
Palo Alto Investors Palo Alto, California $654M AUM 77.8% 1-Year Est. Return
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $481B AUM 30.42% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return
RSCM
Rock Springs Capital Management Baltimore, Maryland $1.7B AUM 93.03% 1-Year Est. Return

OrbiMed's PRTA Position: Q1 2021 in Review

OrbiMed sold out of Prothena Corp (PRTA) in Q1 2021, closing a stake of 1,797,458 shares — an estimated $21.6M sold.

OrbiMed first reported a position in PRTA in Q4 2013 and held it in 10 quarters. The position peaked at $72.4M in Q1 2014. 146 funds tracked by Wall St. Rank hold PRTA as of Q1 2021.

  • OrbiMed reported no remaining Prothena Corp position as of Q1 2021 after selling out during the quarter.
  • OrbiMed sold 1,797,458 Prothena Corp shares in Q1 2021, an estimated $21.6M.
  • OrbiMed first reported a position in Prothena Corp in Q4 2013 and held it in 10 quarters.
  • OrbiMed's Prothena Corp position peaked at $72.4M in Q1 2014.
  • 146 funds tracked by Wall St. Rank held Prothena Corp as of Q1 2021.

Based on OrbiMed's 13F filing for Q1 2021, filed 17 May 2021.